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#1
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Packard Bell Milano scorching the 'net !
Hi Gang !
( sure would like to see more action here..........) I have some Packard Bell projects backing up on me, but I just finished one today. Swapped out the Intel 440FX P II ( originally 233MHz, I swapped in a 333MHz ) motherboard out of the very lovely Packard Bell Milano case ( just about one of the best looking PB's ever made in my opinion ) for an Intel D815EEA2/D815EPEA2 (U) (note the very important U ) motherboard. This board is a high performance Intel designed around the 815E ( B stepping ) chipset. The "U" means that it supports the Intel Tualatin CPU, so any Socket 370 CPU "up to" 1.4GHz can be installed. Also Supports Coppermine P III, Coppermine Celeron, and Tualatin Celeron. I happen to really like Intel boards, because they are so damn completely stable, and reliable. If you don't overclock, they are the best. This machine is running: Tualatin 1.33GHz 256 meg ram 10G HDD Everything is built onto the motherboard, HOWEVER, it is a full size ATX board, with 1 AGP and 6 PCI slots. It has onboard audio, video, 4 USB, 10/100 network, and kicks serious butt. Had to create an I/O backing plate, but at no time was the Milano case harmed. Matter of fact, I could have it back to factory specs in less than an hour. The motherboard was a bolt in, and I'm even using the stock PSU. This is a test cruise, I just finished installing Windows XP Professional, and now need to do some serious "setting up". Next up: Gonna install an Orlando 685 motherboard from a Packard Bell Platinum machine into my Packard Bell Corner Computer. I chose this board because it has 2 USB ports, and 256K L2 cache. (I may change my mind and try to find an 810 board, but I can't get anyone on ePay to reply to my questions. ) Then I'm going to install my brand new Evergreen 400MHz upgrade CPU, install Windows XP, and really be styling. :-) Gotta get these "winter projects" done before it's time to get out into the yard.................. Have fun gang ! bobwatts EartH |
#2
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Packard Bell Milano scorching the 'net !
Yes, the D815 series boards are first-rate P3 boards and you got yourself the
very latest and the very best of them. Only the 512MB memory limitation keeps them from running some combinations of memory-intensive software and operating systems. Too bad Intel limted the memory for the 815 chipset to make its Socket 423 Pentium 4 boards with 850 RAMBUS chipset look better. I'm not sure you can find an LPX form factor motherboard with a Socket 370 CPU. Very few of them were ever made, none by Intel, which moved on to NLX as the successor for small form factor systems. IBM used a couple of Slot 1 LPX form factor boards and even one with a Pentium Pro, but I suspect that they both had some serious heat problems. If you have the BIOS mods to go along with the Evergreen version of the AMD K6-2, you should be OK. While rummaging in my hardware pile the other day, I ran across an smallish LPX board which would also run the 400MHz Evergreen with BIOS changes. It even has a separate voltage regulator module to regulate the voltage and a COAST slot which would handle a 512K cache module. If I have time tomorrow, I'll throw it on the testbed and see what it can still... Ben Myers On Sun, 4 Mar 2007 14:38:56 -0500, "Robert E. Watts" wrote: Hi Gang ! ( sure would like to see more action here..........) I have some Packard Bell projects backing up on me, but I just finished one today. Swapped out the Intel 440FX P II ( originally 233MHz, I swapped in a 333MHz ) motherboard out of the very lovely Packard Bell Milano case ( just about one of the best looking PB's ever made in my opinion ) for an Intel D815EEA2/D815EPEA2 (U) (note the very important U ) motherboard. This board is a high performance Intel designed around the 815E ( B stepping ) chipset. The "U" means that it supports the Intel Tualatin CPU, so any Socket 370 CPU "up to" 1.4GHz can be installed. Also Supports Coppermine P III, Coppermine Celeron, and Tualatin Celeron. I happen to really like Intel boards, because they are so damn completely stable, and reliable. If you don't overclock, they are the best. This machine is running: Tualatin 1.33GHz 256 meg ram 10G HDD Everything is built onto the motherboard, HOWEVER, it is a full size ATX board, with 1 AGP and 6 PCI slots. It has onboard audio, video, 4 USB, 10/100 network, and kicks serious butt. Had to create an I/O backing plate, but at no time was the Milano case harmed. Matter of fact, I could have it back to factory specs in less than an hour. The motherboard was a bolt in, and I'm even using the stock PSU. This is a test cruise, I just finished installing Windows XP Professional, and now need to do some serious "setting up". Next up: Gonna install an Orlando 685 motherboard from a Packard Bell Platinum machine into my Packard Bell Corner Computer. I chose this board because it has 2 USB ports, and 256K L2 cache. (I may change my mind and try to find an 810 board, but I can't get anyone on ePay to reply to my questions. ) Then I'm going to install my brand new Evergreen 400MHz upgrade CPU, install Windows XP, and really be styling. :-) Gotta get these "winter projects" done before it's time to get out into the yard.................. Have fun gang ! bobwatts EartH |
#3
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Packard Bell Milano scorching the 'net !
HI Ben!
( I always look forward to your replies, they are very informative. ) ( inserting comments as I go, as usual. ) "Ben Myers" wrote in message ... Yes, the D815 series boards are first-rate P3 boards and you got yourself the very latest and the very best of them. Only the 512MB memory limitation keeps them from running some combinations of memory-intensive software and operating systems. Too bad Intel limted the memory for the 815 chipset to make its Socket 423 Pentium 4 boards with 850 RAMBUS chipset look better. Yep. There are literally probably a hundred or more Socket 370 boards to choose from, but after considering the issue for a couple of months, I decided to stick with Intel. I decided years ago, since I'm not an avid overclocker, I just have never seen a more stable motherboard. And I've probably used them all. Don't get me wrong, Asus, Gigabyte, Tyan, DFI, etc. all make a great product, but for some reason, the Intel just "feels" better to me. Amazingly, all the "testers" usually praise Intel boards for reliability and stability, but since you can't overclock them, they end up panning them. And we all know the vast majority of PB's had Intel boards in 'em. I'm not sure you can find an LPX form factor motherboard with a Socket 370 CPU. Very few of them were ever made, none by Intel, Sorry, I wasn't clear. I was referring to this board: http://www.uktsupport.co.uk/pb/mb/810.htm The auction below claims to have an 810VX chipset. http://cgi.ebay.com/ws/eBayISAPI.dll...6779&rd=1&rd=1 Since I have never heard of such a thing, and am pretty sure it doesn't exist, I have been trying to get an answer from this guy. Looks like a 430VX chipset to me. I like the fact that it uses DIMM's. I'm trying to get him to ID the board better, but that PICTURE looks to have L2 cache. On the other hand, lots of auctions use that exact same picture for other boards. I have to stick with an AT board anyhow. It's impossible to install an ATX PSU. The 'corner has one of the Worlds most unique PSU, so I'm stuck with an AT LPX board. which moved on to NLX as the successor for small form factor systems. IBM used a couple of Slot 1 LPX form factor boards and even one with a Pentium Pro, but I suspect that they both had some serious heat problems. If you have the BIOS mods to go along with the Evergreen version of the AMD K6-2, you should be OK. Yep, got the BIOS mods on CD. Complete new Evergreen kit. Tempted to see if a K6-3 would work. While rummaging in my hardware pile the other day, I ran across an smallish LPX board which would also run the 400MHz Evergreen with BIOS changes. It even has a separate voltage regulator module to regulate the voltage and a COAST slot which would handle a 512K cache module. If I have time tomorrow, I'll throw it on the testbed and see what it can still... Ben Myers Do you have the COAST stick, and the riser card ? That would be an interesting board indeed. bob |
#4
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Packard Bell Milano scorching the 'net !
Bob,
The board being auctioned on eBay is definitely Socket 7. The auction item even says so. An 810VX chipset simply does not exist. For Socket 7 and EDO DIMMs, the chipset has to be 430VX. Long ago, I began to use Intel brand motherboards and I have never regretted doing so. Stable, reliable, and perhaps the best technical motherboard documentation. Using one brand has other advantages. Pinouts remain consistent, and so does the look and feel of the BIOS, up to a point. PB used a lot of them, but also strayed to BCM and maybe another brand or two in later days. To go with the LPX motherboard, I have 512K coast modules (which also fit in the Intel Endeavor) and a wide range of riser cards, including PB's from its tower and desktop systems, IBM's, and maybe a few others. At one time, I had the idea that LPX systems could have motherboard upgrades. Unfortunately, the choice of motherboards was too limited for that to be an option. But I collected LPX hardware (but not computer cases) anyway... Ben On Mon, 5 Mar 2007 06:45:08 -0500, "Robert E. Watts" wrote: HI Ben! ( I always look forward to your replies, they are very informative. ) ( inserting comments as I go, as usual. ) "Ben Myers" wrote in message .. . Yes, the D815 series boards are first-rate P3 boards and you got yourself the very latest and the very best of them. Only the 512MB memory limitation keeps them from running some combinations of memory-intensive software and operating systems. Too bad Intel limted the memory for the 815 chipset to make its Socket 423 Pentium 4 boards with 850 RAMBUS chipset look better. Yep. There are literally probably a hundred or more Socket 370 boards to choose from, but after considering the issue for a couple of months, I decided to stick with Intel. I decided years ago, since I'm not an avid overclocker, I just have never seen a more stable motherboard. And I've probably used them all. Don't get me wrong, Asus, Gigabyte, Tyan, DFI, etc. all make a great product, but for some reason, the Intel just "feels" better to me. Amazingly, all the "testers" usually praise Intel boards for reliability and stability, but since you can't overclock them, they end up panning them. And we all know the vast majority of PB's had Intel boards in 'em. I'm not sure you can find an LPX form factor motherboard with a Socket 370 CPU. Very few of them were ever made, none by Intel, Sorry, I wasn't clear. I was referring to this board: http://www.uktsupport.co.uk/pb/mb/810.htm The auction below claims to have an 810VX chipset. http://cgi.ebay.com/ws/eBayISAPI.dll...6779&rd=1&rd=1 Since I have never heard of such a thing, and am pretty sure it doesn't exist, I have been trying to get an answer from this guy. Looks like a 430VX chipset to me. I like the fact that it uses DIMM's. I'm trying to get him to ID the board better, but that PICTURE looks to have L2 cache. On the other hand, lots of auctions use that exact same picture for other boards. I have to stick with an AT board anyhow. It's impossible to install an ATX PSU. The 'corner has one of the Worlds most unique PSU, so I'm stuck with an AT LPX board. which moved on to NLX as the successor for small form factor systems. IBM used a couple of Slot 1 LPX form factor boards and even one with a Pentium Pro, but I suspect that they both had some serious heat problems. If you have the BIOS mods to go along with the Evergreen version of the AMD K6-2, you should be OK. Yep, got the BIOS mods on CD. Complete new Evergreen kit. Tempted to see if a K6-3 would work. While rummaging in my hardware pile the other day, I ran across an smallish LPX board which would also run the 400MHz Evergreen with BIOS changes. It even has a separate voltage regulator module to regulate the voltage and a COAST slot which would handle a 512K cache module. If I have time tomorrow, I'll throw it on the testbed and see what it can still... Ben Myers Do you have the COAST stick, and the riser card ? That would be an interesting board indeed. bob |
#5
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Packard Bell Milano scorching the 'net !
Bob,
I tossed the LPX board on the test bench. It was manufactured by Intel for AST, yet another company that went the LPX route for a while. The unusual features of the motherboard are a standard COAST socket for cache and a voltage regulator module (VRM) socket. I have some Socket 7 VRMs gotten way back as surplus from DEC. I plugged in a VRM, set the operating voltage to 2.8v via jumpers on the VRM, inserted a 512K COAST stick, and dropped a 233MHz Pentium MMX into the socket. It all works and plays nicely together. Tomorrow, if there is a moment of calm, I'll drop in an AMD K6-2/400, set the VRM voltage to 2.2v and see what happens. I sort of doubt anything will happen, unless AST modifed the Intel-standard BIOS to get around the CPU manufacturer check written by Intel... Ben Myers On Mon, 05 Mar 2007 09:49:28 -0500, Ben Myers wrote: Bob, The board being auctioned on eBay is definitely Socket 7. The auction item even says so. An 810VX chipset simply does not exist. For Socket 7 and EDO DIMMs, the chipset has to be 430VX. Long ago, I began to use Intel brand motherboards and I have never regretted doing so. Stable, reliable, and perhaps the best technical motherboard documentation. Using one brand has other advantages. Pinouts remain consistent, and so does the look and feel of the BIOS, up to a point. PB used a lot of them, but also strayed to BCM and maybe another brand or two in later days. To go with the LPX motherboard, I have 512K coast modules (which also fit in the Intel Endeavor) and a wide range of riser cards, including PB's from its tower and desktop systems, IBM's, and maybe a few others. At one time, I had the idea that LPX systems could have motherboard upgrades. Unfortunately, the choice of motherboards was too limited for that to be an option. But I collected LPX hardware (but not computer cases) anyway... Ben On Mon, 5 Mar 2007 06:45:08 -0500, "Robert E. Watts" wrote: HI Ben! ( I always look forward to your replies, they are very informative. ) ( inserting comments as I go, as usual. ) "Ben Myers" wrote in message . .. Yes, the D815 series boards are first-rate P3 boards and you got yourself the very latest and the very best of them. Only the 512MB memory limitation keeps them from running some combinations of memory-intensive software and operating systems. Too bad Intel limted the memory for the 815 chipset to make its Socket 423 Pentium 4 boards with 850 RAMBUS chipset look better. Yep. There are literally probably a hundred or more Socket 370 boards to choose from, but after considering the issue for a couple of months, I decided to stick with Intel. I decided years ago, since I'm not an avid overclocker, I just have never seen a more stable motherboard. And I've probably used them all. Don't get me wrong, Asus, Gigabyte, Tyan, DFI, etc. all make a great product, but for some reason, the Intel just "feels" better to me. Amazingly, all the "testers" usually praise Intel boards for reliability and stability, but since you can't overclock them, they end up panning them. And we all know the vast majority of PB's had Intel boards in 'em. I'm not sure you can find an LPX form factor motherboard with a Socket 370 CPU. Very few of them were ever made, none by Intel, Sorry, I wasn't clear. I was referring to this board: http://www.uktsupport.co.uk/pb/mb/810.htm The auction below claims to have an 810VX chipset. http://cgi.ebay.com/ws/eBayISAPI.dll...6779&rd=1&rd=1 Since I have never heard of such a thing, and am pretty sure it doesn't exist, I have been trying to get an answer from this guy. Looks like a 430VX chipset to me. I like the fact that it uses DIMM's. I'm trying to get him to ID the board better, but that PICTURE looks to have L2 cache. On the other hand, lots of auctions use that exact same picture for other boards. I have to stick with an AT board anyhow. It's impossible to install an ATX PSU. The 'corner has one of the Worlds most unique PSU, so I'm stuck with an AT LPX board. which moved on to NLX as the successor for small form factor systems. IBM used a couple of Slot 1 LPX form factor boards and even one with a Pentium Pro, but I suspect that they both had some serious heat problems. If you have the BIOS mods to go along with the Evergreen version of the AMD K6-2, you should be OK. Yep, got the BIOS mods on CD. Complete new Evergreen kit. Tempted to see if a K6-3 would work. While rummaging in my hardware pile the other day, I ran across an smallish LPX board which would also run the 400MHz Evergreen with BIOS changes. It even has a separate voltage regulator module to regulate the voltage and a COAST slot which would handle a 512K cache module. If I have time tomorrow, I'll throw it on the testbed and see what it can still... Ben Myers Do you have the COAST stick, and the riser card ? That would be an interesting board indeed. bob |
#6
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LPX stuff
Hi Ben !
Bob, I tossed the LPX board on the test bench. It was manufactured by Intel for AST, yet another company that went the LPX route for a while. The unusual features of the motherboard are a standard COAST socket for cache and a voltage regulator module (VRM) socket. I have some Socket 7 VRMs gotten way back as surplus from DEC. I plugged in a VRM, set the operating voltage to 2.8v via jumpers on the VRM, inserted a 512K COAST stick, and dropped a 233MHz Pentium MMX into the socket. It all works and plays nicely together. Tomorrow, if there is a moment of calm, I'll drop in an AMD K6-2/400, set the VRM voltage to 2.2v and see what happens. I sort of doubt anything will happen, unless AST modifed the Intel-standard BIOS to get around the CPU manufacturer check written by Intel... Ben Myers I don't know if I would do that......Since the board is not a SS7 board, it's not going to run the K6-2 at 100MHz FSB, so it can't reach 400MHz. And with a highest clock mulitplier on the board ( I'm assuming here ) of 3.5, it's only going to run at 233MHz also. There may be unforseen problems with dropping in a K6-2. I personally have never installed a 100MHz version into a plain Socket 7 board. Or at least I don't remember doing it. I know for a long time, I really liked the K6-233, but the damn thing ran REALLY hot. Be interesting to see if a K6 would run OK, as it has more L1 than the Intel CPU. In any event, it still sounds interesting, because the Evergreen upgrade CPU may work, getting the thing to 400MHz that way ( the interposer has a 6X multiplier on it 66X6= 400MHz ), and at least the board has 512k L2. What about a riser card, do you have those also? What slots does the riser card have if you do, or is there any chance the PB riser is compatible ? What other features does the board have ? Video, audio, NIC, etc. What is the PSU connector ? ( AT I hope. :-) Good luck. bob |
#7
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LPX stuff
Bob,
In the past, I've run the AMD K6-2 in other boards (Micronics ATX) with Intel Triton 66MHz chipset and the same VRM. The Evergreen interposer does it one way, by hard-wiring the CLKMUL pins. (Asus, among others, manufactured Triton chipset boards with jumper settings to overclock the chipset to 83MHz, allowing up to 450Mhz with a K6-2.) Here is how it really works. If you take the AMD K6-2 spec and the Intel Pentium or Pentium MMX spec, and compare them, you will see that the Intel CLKMUL pin values for 2x66MHz are identical to the AMD pin values for 6x66Mhz. So to get 400MHz without any interposer, simply set the motherboard jumpers or switches for 133MHz Intel. Intel actually faked it a bit, too, with the Pentium MMX. To run the MMX at 233Mhz, use the 100MHz settings for the classic Pentium. Since Intel had only 2 CLKMUL pins for Socket 7, they had to reuse one setting to get 233MHz. AMD picked a third pin, unused by Intel, for CLKMUL, giving the possibility of 8 possible CLKMUL values. The board I have is entirely compatible with PB risers. The LPX riser card standard, followed strictly by PB, NEC, IBM, HP, and AST, is EXACTLY like the older EISA slot-and-edge-connector. The board is running with either an HP or a PB riser, the kind that sits parallel to the plane of the motherboard with a little gold-plated edge connector in between. Either an AMD K6-2 will run at 400MHz, or the BIOS on the board will stop the system from booting. How many riser cards do you want? I have a carton full of them, from quite a few brands. Maybe I should start the LPX riser card museum? ... Ben On Thu, 8 Mar 2007 08:29:33 -0500, "Robert E. Watts" wrote: Hi Ben ! Bob, I tossed the LPX board on the test bench. It was manufactured by Intel for AST, yet another company that went the LPX route for a while. The unusual features of the motherboard are a standard COAST socket for cache and a voltage regulator module (VRM) socket. I have some Socket 7 VRMs gotten way back as surplus from DEC. I plugged in a VRM, set the operating voltage to 2.8v via jumpers on the VRM, inserted a 512K COAST stick, and dropped a 233MHz Pentium MMX into the socket. It all works and plays nicely together. Tomorrow, if there is a moment of calm, I'll drop in an AMD K6-2/400, set the VRM voltage to 2.2v and see what happens. I sort of doubt anything will happen, unless AST modifed the Intel-standard BIOS to get around the CPU manufacturer check written by Intel... Ben Myers I don't know if I would do that......Since the board is not a SS7 board, it's not going to run the K6-2 at 100MHz FSB, so it can't reach 400MHz. And with a highest clock mulitplier on the board ( I'm assuming here ) of 3.5, it's only going to run at 233MHz also. There may be unforseen problems with dropping in a K6-2. I personally have never installed a 100MHz version into a plain Socket 7 board. Or at least I don't remember doing it. I know for a long time, I really liked the K6-233, but the damn thing ran REALLY hot. Be interesting to see if a K6 would run OK, as it has more L1 than the Intel CPU. In any event, it still sounds interesting, because the Evergreen upgrade CPU may work, getting the thing to 400MHz that way ( the interposer has a 6X multiplier on it 66X6= 400MHz ), and at least the board has 512k L2. What about a riser card, do you have those also? What slots does the riser card have if you do, or is there any chance the PB riser is compatible ? What other features does the board have ? Video, audio, NIC, etc. What is the PSU connector ? ( AT I hope. :-) Good luck. bob |
#8
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LPX stuff
Hi Ben !
Of course you're right about the multiplier. A couple of hours after I posted my message, it hit me that the 2X setting will result in a 6X setting with the AMD CPU. Let me know how the tests turn out. bob Bob, In the past, I've run the AMD K6-2 in other boards (Micronics ATX) with Intel Triton 66MHz chipset and the same VRM. The Evergreen interposer does it one way, by hard-wiring the CLKMUL pins. (Asus, among others, manufactured Triton chipset boards with jumper settings to overclock the chipset to 83MHz, allowing up to 450Mhz with a K6-2.) Here is how it really works. If you take the AMD K6-2 spec and the Intel Pentium or Pentium MMX spec, and compare them, you will see that the Intel CLKMUL pin values for 2x66MHz are identical to the AMD pin values for 6x66Mhz. So to get 400MHz without any interposer, simply set the motherboard jumpers or switches for 133MHz Intel. Intel actually faked it a bit, too, with the Pentium MMX. To run the MMX at 233Mhz, use the 100MHz settings for the classic Pentium. Since Intel had only 2 CLKMUL pins for Socket 7, they had to reuse one setting to get 233MHz. AMD picked a third pin, unused by Intel, for CLKMUL, giving the possibility of 8 possible CLKMUL values. The board I have is entirely compatible with PB risers. The LPX riser card standard, followed strictly by PB, NEC, IBM, HP, and AST, is EXACTLY like the older EISA slot-and-edge-connector. The board is running with either an HP or a PB riser, the kind that sits parallel to the plane of the motherboard with a little gold-plated edge connector in between. Either an AMD K6-2 will run at 400MHz, or the BIOS on the board will stop the system from booting. How many riser cards do you want? I have a carton full of them, from quite a few brands. Maybe I should start the LPX riser card museum? ... Ben On Thu, 8 Mar 2007 08:29:33 -0500, "Robert E. Watts" wrote: Hi Ben ! Bob, I tossed the LPX board on the test bench. It was manufactured by Intel for AST, yet another company that went the LPX route for a while. The unusual features of the motherboard are a standard COAST socket for cache and a voltage regulator module (VRM) socket. I have some Socket 7 VRMs gotten way back as surplus from DEC. I plugged in a VRM, set the operating voltage to 2.8v via jumpers on the VRM, inserted a 512K COAST stick, and dropped a 233MHz Pentium MMX into the socket. It all works and plays nicely together. Tomorrow, if there is a moment of calm, I'll drop in an AMD K6-2/400, set the VRM voltage to 2.2v and see what happens. I sort of doubt anything will happen, unless AST modifed the Intel-standard BIOS to get around the CPU manufacturer check written by Intel... Ben Myers I don't know if I would do that......Since the board is not a SS7 board, it's not going to run the K6-2 at 100MHz FSB, so it can't reach 400MHz. And with a highest clock mulitplier on the board ( I'm assuming here ) of 3.5, it's only going to run at 233MHz also. There may be unforseen problems with dropping in a K6-2. I personally have never installed a 100MHz version into a plain Socket 7 board. Or at least I don't remember doing it. I know for a long time, I really liked the K6-233, but the damn thing ran REALLY hot. Be interesting to see if a K6 would run OK, as it has more L1 than the Intel CPU. In any event, it still sounds interesting, because the Evergreen upgrade CPU may work, getting the thing to 400MHz that way ( the interposer has a 6X multiplier on it 66X6= 400MHz ), and at least the board has 512k L2. What about a riser card, do you have those also? What slots does the riser card have if you do, or is there any chance the PB riser is compatible ? What other features does the board have ? Video, audio, NIC, etc. What is the PSU connector ? ( AT I hope. :-) Good luck. bob |
#9
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LPX stuff
Bob,
Somewhat predictably, the AST/Intel LPX board would not boot with an AMD K6-2 CPU. Oh, well. But at least it was predictable, and it is nice when things go predictably for a change. Anyway, the board has a Crystal audio chip on it, and a connector for which I have the cable and mini-card to provide audio connections at the back. The board has the most often found arrangement of connectors at the back. From left to right, VGA, parallel, (2) serial, mouse, keyboard. I also have one metal strip that goes at the back to cover the board, in the event that the case in which it would be installed does not have its own metal to cover it. If you'd like the whole package of board, 233Mhz MMX, VRM (with documentation), 512K cache COAST module, audio adapter, and your choice of riser card, make an offer plus maybe $7 or $8 max for shipping. It would make a fitting addition to your PB-LPX museum... Ben On Thu, 8 Mar 2007 18:11:57 -0500, "Robert E. Watts" wrote: Hi Ben ! Of course you're right about the multiplier. A couple of hours after I posted my message, it hit me that the 2X setting will result in a 6X setting with the AMD CPU. Let me know how the tests turn out. bob Bob, In the past, I've run the AMD K6-2 in other boards (Micronics ATX) with Intel Triton 66MHz chipset and the same VRM. The Evergreen interposer does it one way, by hard-wiring the CLKMUL pins. (Asus, among others, manufactured Triton chipset boards with jumper settings to overclock the chipset to 83MHz, allowing up to 450Mhz with a K6-2.) Here is how it really works. If you take the AMD K6-2 spec and the Intel Pentium or Pentium MMX spec, and compare them, you will see that the Intel CLKMUL pin values for 2x66MHz are identical to the AMD pin values for 6x66Mhz. So to get 400MHz without any interposer, simply set the motherboard jumpers or switches for 133MHz Intel. Intel actually faked it a bit, too, with the Pentium MMX. To run the MMX at 233Mhz, use the 100MHz settings for the classic Pentium. Since Intel had only 2 CLKMUL pins for Socket 7, they had to reuse one setting to get 233MHz. AMD picked a third pin, unused by Intel, for CLKMUL, giving the possibility of 8 possible CLKMUL values. The board I have is entirely compatible with PB risers. The LPX riser card standard, followed strictly by PB, NEC, IBM, HP, and AST, is EXACTLY like the older EISA slot-and-edge-connector. The board is running with either an HP or a PB riser, the kind that sits parallel to the plane of the motherboard with a little gold-plated edge connector in between. Either an AMD K6-2 will run at 400MHz, or the BIOS on the board will stop the system from booting. How many riser cards do you want? I have a carton full of them, from quite a few brands. Maybe I should start the LPX riser card museum? ... Ben On Thu, 8 Mar 2007 08:29:33 -0500, "Robert E. Watts" wrote: Hi Ben ! Bob, I tossed the LPX board on the test bench. It was manufactured by Intel for AST, yet another company that went the LPX route for a while. The unusual features of the motherboard are a standard COAST socket for cache and a voltage regulator module (VRM) socket. I have some Socket 7 VRMs gotten way back as surplus from DEC. I plugged in a VRM, set the operating voltage to 2.8v via jumpers on the VRM, inserted a 512K COAST stick, and dropped a 233MHz Pentium MMX into the socket. It all works and plays nicely together. Tomorrow, if there is a moment of calm, I'll drop in an AMD K6-2/400, set the VRM voltage to 2.2v and see what happens. I sort of doubt anything will happen, unless AST modifed the Intel-standard BIOS to get around the CPU manufacturer check written by Intel... Ben Myers I don't know if I would do that......Since the board is not a SS7 board, it's not going to run the K6-2 at 100MHz FSB, so it can't reach 400MHz. And with a highest clock mulitplier on the board ( I'm assuming here ) of 3.5, it's only going to run at 233MHz also. There may be unforseen problems with dropping in a K6-2. I personally have never installed a 100MHz version into a plain Socket 7 board. Or at least I don't remember doing it. I know for a long time, I really liked the K6-233, but the damn thing ran REALLY hot. Be interesting to see if a K6 would run OK, as it has more L1 than the Intel CPU. In any event, it still sounds interesting, because the Evergreen upgrade CPU may work, getting the thing to 400MHz that way ( the interposer has a 6X multiplier on it 66X6= 400MHz ), and at least the board has 512k L2. What about a riser card, do you have those also? What slots does the riser card have if you do, or is there any chance the PB riser is compatible ? What other features does the board have ? Video, audio, NIC, etc. What is the PSU connector ? ( AT I hope. :-) Good luck. bob |
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