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#1
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Pentium II CPU upgrading to Pentium III ???
A friend of mine has this old computer with a Jetway 720BF motherboard, 64MB
of 168pin 100MHz SDRAM and a Pentium II (Slot 1) CPU (100MHz FSB) with 450MHz installed. The computer still does the job but I was wondering if it would be possible to tweak the thing a little bit. According to the manual the motherboard supports Pentium II and III CPU's up to 500MHz. Now I know it would not make much sense to upgrade to a 500MHz from a 450 so I was wondering if it would be possible to chuck a Pentium III CPU in with say 1000MHz? The manual does not say you can but by the time of writing how could it? So my question is, is there any difference between a Pentium III 500 and a Pentium III 1000???? Will that motherboard support the 1000 MHz CPU? Or is there some significant differences in the later Pentium III CPU's? Unfortunately the webpage from Jetway is not too helpful either. For those who care to check: http://www.jetway.com.tw/evisn/produ...20bf/720bf.htm Memory4less as an example sells Pentium III CPU's http://www.memory4less.com/cpus/m4l_pentium3.asp The motherboard also supports up to 1.5 GB of RAM (which seems really excessive!) and I was thinking of chucking an additional 128 or maybe 256 MB of RAM in there to speed things up a little. What are your opinions??? Thanks heaps in advance Hans |
#2
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"Hans Huber" wrote in message ... A friend of mine has this old computer with a Jetway 720BF motherboard, 64MB of 168pin 100MHz SDRAM and a Pentium II (Slot 1) CPU (100MHz FSB) with 450MHz installed. The computer still does the job but I was wondering if it would be possible to tweak the thing a little bit. According to the manual the motherboard supports Pentium II and III CPU's up to 500MHz. Now I know it would not make much sense to upgrade to a 500MHz from a 450 so I was wondering if it would be possible to chuck a Pentium III CPU in with say 1000MHz? The manual does not say you can but by the time of writing how could it? So my question is, is there any difference between a Pentium III 500 and a Pentium III 1000???? Will that motherboard support the 1000 MHz CPU? Or is there some significant differences in the later Pentium III CPU's? Unfortunately the webpage from Jetway is not too helpful either. For those who care to check: http://www.jetway.com.tw/evisn/produ...20bf/720bf.htm Yes there can be a relevant difference. There may not be, but take this as an example: Pentium 4 1.6GHz Pentium 4 2.53GHz The second one looks better, and just because your motherboard says "supports up to 2.4GHz" doesn't mean that the second one isn't supported, right? Wrong. When I add in the rest of the information: Pentium 4 1.6GHz 400MHz FSB Pentium 4 2.53GHz 533MHz FSB There's a huge difference. Older motherboards cannot deal with the 533MHz FSB, and the CPU cannot step down a notch either (without underclocking the system, and that's just stupid). There may be the same problem with Pentium IIIs. Therefore, I wouldn't recommend doing that until you ask the manufacturer or somebody about the details of your motherboard. How did you get a motherboard that supports both Pentium II and III anyways?! Memory4less as an example sells Pentium III CPU's http://www.memory4less.com/cpus/m4l_pentium3.asp The motherboard also supports up to 1.5 GB of RAM (which seems really excessive!) and I was thinking of chucking an additional 128 or maybe 256 MB of RAM in there to speed things up a little. 1.5GB is definately not excessive. Just make sure you're using the right RAM speed, too. If that motherboard was based on the Pentium II system, then it probably takes PC66/100 RAM. IIRC, PC133's a bit faster and still will work (Just as PC3500 generally works in PC3200 systems). What are your opinions??? Thanks heaps in advance Hans -- MiniDisc_2k2 P.S. I chose the speeds on the Pentium 4 example because I was pretty sure there are no 2.53GHz 400MHz FSB CPUs out there. Was I right? Anybody? |
#3
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Yes there can be a relevant difference. There may not be, but take this as an example: Pentium 4 1.6GHz Pentium 4 2.53GHz The second one looks better, and just because your motherboard says "supports up to 2.4GHz" doesn't mean that the second one isn't supported, right? Wrong. When I add in the rest of the information: Pentium 4 1.6GHz 400MHz FSB Pentium 4 2.53GHz 533MHz FSB There's a huge difference. Older motherboards cannot deal with the 533MHz FSB, and the CPU cannot step down a notch either (without underclocking the system, and that's just stupid). There may be the same problem with Pentium IIIs. Therefore, I wouldn't recommend doing that until you ask the manufacturer or somebody about the details of your motherboard. How did you get a motherboard that supports both Pentium II and III anyways?! Well the manual states that it supports CPU's from Pentium II 266 with 66MHz FSB up to Pentium III 500 with 100MHz FSB. Now my theory is (which might and probably is wrong) that there is a Pentium III CPU out there which still has got the 100MHz FSB but a CPU Speed of 950MHz. The problem probably is that the Core Voltage dropped from 2V to 1.7V (and I have got no clue how that would affect the whole operation), the multiplier rose from 5 to 9.5 (which one would assume), the Level 2 cache dropeed to 256 from 512 (went backwards, no idea why), and the architecture went from Katmai (with 025 micron) to Coppermine (with 0.18). Now I have all those fihures, different core voltage, different L2 cache, different architecture. It probably won't work, but what if it does??? 1.5GB is definately not excessive. Just make sure you're using the right RAM speed, too. If that motherboard was based on the Pentium II system, then it probably takes PC66/100 RAM. IIRC, PC133's a bit faster and still will work (Just as PC3500 generally works in PC3200 systems). The RAM in there is 64MB PC100 SDRAM, so I could easily grab 256MB PC100 and add them, that is the easy part. But I don't know about the CPU! MiniDisc_2k2 P.S. I chose the speeds on the Pentium 4 example because I was pretty sure there are no 2.53GHz 400MHz FSB CPUs out there. Was I right? Anybody? |
#4
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Slot 1 was used with CPUs up to 600 Mhz. You can use slot 1 with a faster processor if you get one from e.g. http://www.evertech.com/ with a Celeron CPU up to 1.4 ghz. Hans Huber wrote: A friend of mine has this old computer with a Jetway 720BF motherboard, 64MB of 168pin 100MHz SDRAM and a Pentium II (Slot 1) CPU (100MHz FSB) with 450MHz installed. The computer still does the job but I was wondering if it would be possible to tweak the thing a little bit. According to the manual the motherboard supports Pentium II and III CPU's up to 500MHz. Now I know it would not make much sense to upgrade to a 500MHz from a 450 so I was wondering if it would be possible to chuck a Pentium III CPU in with say 1000MHz? The manual does not say you can but by the time of writing how could it? So my question is, is there any difference between a Pentium III 500 and a Pentium III 1000???? Will that motherboard support the 1000 MHz CPU? Or is there some significant differences in the later Pentium III CPU's? Unfortunately the webpage from Jetway is not too helpful either. For those who care to check: http://www.jetway.com.tw/evisn/produ...20bf/720bf.htm Memory4less as an example sells Pentium III CPU's http://www.memory4less.com/cpus/m4l_pentium3.asp The motherboard also supports up to 1.5 GB of RAM (which seems really excessive!) and I was thinking of chucking an additional 128 or maybe 256 MB of RAM in there to speed things up a little. What are your opinions??? Thanks heaps in advance Hans -- Mike Walsh West Palm Beach, Florida, U.S.A. |
#5
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I'd go for upgrading to ram to at least 128MB, perhaps 256MB since it's
cheap these days. Upgrade the video card to something newer, that always makes a world of difference in how fast the system "feels." Also, a faster hard drives makes the system feel faster as well. Processos speed is not the most critical factor for a day-to-day web/email/word processer system. Don't believe everything you hear in the media - a PII450 is still a VERY functional system. We're all just spoiled these days because of how tecnology changes so fast. I have two systems these days (well, two up and running - Also have parts all over!). One is an older PIII450 on an Asus P3B-F with 196MB RAM and another is an Asus K7M with an Athlon 1 GHz system with 512B RAM. Both are equipped versy similar with regards to video card and hard drive. For my simple ol needs, the PIII450 perform just as well as the Athlon. Hans Huber wrote in message ... A friend of mine has this old computer with a Jetway 720BF motherboard, 64MB of 168pin 100MHz SDRAM and a Pentium II (Slot 1) CPU (100MHz FSB) with 450MHz installed. The computer still does the job but I was wondering if it would be possible to tweak the thing a little bit. According to the manual the motherboard supports Pentium II and III CPU's up to 500MHz. Now I know it would not make much sense to upgrade to a 500MHz from a 450 so I was wondering if it would be possible to chuck a Pentium III CPU in with say 1000MHz? The manual does not say you can but by the time of writing how could it? So my question is, is there any difference between a Pentium III 500 and a Pentium III 1000???? Will that motherboard support the 1000 MHz CPU? Or is there some significant differences in the later Pentium III CPU's? Unfortunately the webpage from Jetway is not too helpful either. For those who care to check: http://www.jetway.com.tw/evisn/produ...20bf/720bf.htm Memory4less as an example sells Pentium III CPU's http://www.memory4less.com/cpus/m4l_pentium3.asp The motherboard also supports up to 1.5 GB of RAM (which seems really excessive!) and I was thinking of chucking an additional 128 or maybe 256 MB of RAM in there to speed things up a little. What are your opinions??? Thanks heaps in advance Hans |
#6
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"Hans Huber" wrote in message ... Well the manual states that it supports CPU's from Pentium II 266 with 66MHz FSB up to Pentium III 500 with 100MHz FSB. Now my theory is (which might and probably is wrong) that there is a Pentium III CPU out there which still has got the 100MHz FSB but a CPU Speed of 950MHz. The problem probably is that the Core Voltage dropped from 2V to 1.7V (and I have got no clue how that would affect the whole operation), the multiplier rose from 5 to 9.5 (which one would assume), the Level 2 cache dropeed to 256 from 512 (went backwards, no idea why), and the architecture went from Katmai (with 025 micron) to Coppermine (with 0.18). Now I have all those fihures, different core voltage, different L2 cache, different architecture. It probably won't work, but what if it does??? Intel made a slot one 1 gig with a 100 fsb but you need a mother board that can handle a coppermine plus it may need a bios flash also. Now the real answer is to get a board that will take a Tualatin (www.mwave.com) such as the Soyo SY-TISU $60 and drop a celeron 1.4 gig in there $57. This will also work with your old memory and case and cost a lot less then a 1gig p3 slot one. Lane |
#7
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"Hans Huber" wrote in message ... Well the manual states that it supports CPU's from Pentium II 266 with 66MHz FSB up to Pentium III 500 with 100MHz FSB. Now my theory is (which might and probably is wrong) that there is a Pentium III CPU out there which still has got the 100MHz FSB but a CPU Speed of 950MHz. The problem probably is that the Core Voltage dropped from 2V to 1.7V (and I have got no clue how that would affect the whole operation), the multiplier rose from 5 to 9.5 (which one would assume), the Level 2 cache dropeed to 256 from 512 (went backwards, no idea why), Because, with the Katmai architechture, the cache was seperate chips on the CPU card and only ran at half CPU speed. When they went to the Coppermine they put the cache on-die where the CPU has more direct access to it and it runs at full CPU speed. It's a case of "Less is more" -- ~misfit~ --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.500 / Virus Database: 298 - Release Date: 10/07/2003 |
#8
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On Sun, 13 Jul 2003 00:54:55 +1000, "Hans Huber"
wrote: A friend of mine has this old computer with a Jetway 720BF motherboard, 64MB of 168pin 100MHz SDRAM and a Pentium II (Slot 1) CPU (100MHz FSB) with 450MHz installed. The computer still does the job but I was wondering if it would be possible to tweak the thing a little bit. According to the manual the motherboard supports Pentium II and III CPU's up to 500MHz. Now I know it would not make much sense to upgrade to a 500MHz from a 450 so I was wondering if it would be possible to chuck a Pentium III CPU in with say 1000MHz? The manual does not say you can but by the time of writing how could it? So my question is, is there any difference between a Pentium III 500 and a Pentium III 1000???? Will that motherboard support the 1000 MHz CPU? Or is there some significant differences in the later Pentium III CPU's? Unfortunately the webpage from Jetway is not too helpful either. For those who care to check: http://www.jetway.com.tw/evisn/produ...20bf/720bf.htm Memory4less as an example sells Pentium III CPU's http://www.memory4less.com/cpus/m4l_pentium3.asp The motherboard also supports up to 1.5 GB of RAM (which seems really excessive!) and I was thinking of chucking an additional 128 or maybe 256 MB of RAM in there to speed things up a little. What are your opinions??? Thanks heaps in advance Hans That is a very cheaply made motherboard, it's not really worth upgrading at this point not only because of the relatively small performance gain per time and money spent, but also because the motherboard may be near the end of it's lifespan, could die at any time. Also, it uses the Sis 620 chipset, with integrated video too... That is a horrible motherboard, it's performance is FAR FAR slower than anything else sold during that era. The sad part was that they were sold with P2 processors, when the systems would've been faster and more reliable with Celeron, K6-2 or K6-3 with different motherboard. If you were to install a P3 950, for most uses the system would be severly bottlenecked by the memory, nortbridge and video throughput, to the extent that taking the PII-450 and plugging it into a BX chipset motherboard and adding a normal video card, might be faster than upgrading the CPU but keeping the same motherboard. The motherboard/chipset is just that bad, perhaps the worst disparity in performance possible at that time. I wouldn't spend a minute trying to upgrade it, but if you happened to have the spare CPU sitting around, unused, I think it will run a Coppermine Celeron when used with a Coppermine Compatible Slotket adapter with manual voltage adjustments. You may need a BIOS update too. I don't recall all the details of upgrading similar PCCHips boards, but I do remember that it worked but wasn't quite a straightforward, easy upgrade, it needed some odd slotket voltage settings that didn't correspond to the voltage ID pins on the processor as reflected in the BIOS health monitor. IMHO, the best use for that motherbaord, when new, was as a dart board. Dave |
#9
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About the only real upgrade you could do is memory. Anything else is a
waste of money. Do not bother upgrading the memory either, if you can't get a good deal on it. "Hans Huber" wrote in message ... A friend of mine has this old computer with a Jetway 720BF motherboard, 64MB of 168pin 100MHz SDRAM and a Pentium II (Slot 1) CPU (100MHz FSB) with 450MHz installed. The computer still does the job but I was wondering if it would be possible to tweak the thing a little bit. According to the manual the motherboard supports Pentium II and III CPU's up to 500MHz. Now I know it would not make much sense to upgrade to a 500MHz from a 450 so I was wondering if it would be possible to chuck a Pentium III CPU in with say 1000MHz? The manual does not say you can but by the time of writing how could it? So my question is, is there any difference between a Pentium III 500 and a Pentium III 1000???? Will that motherboard support the 1000 MHz CPU? Or is there some significant differences in the later Pentium III CPU's? Unfortunately the webpage from Jetway is not too helpful either. For those who care to check: http://www.jetway.com.tw/evisn/produ...20bf/720bf.htm Memory4less as an example sells Pentium III CPU's http://www.memory4less.com/cpus/m4l_pentium3.asp The motherboard also supports up to 1.5 GB of RAM (which seems really excessive!) and I was thinking of chucking an additional 128 or maybe 256 MB of RAM in there to speed things up a little. What are your opinions??? Thanks heaps in advance Hans |
#10
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"Hans Huber" wrote in message ... A friend of mine has this old computer with a Jetway 720BF motherboard, 64MB of 168pin 100MHz SDRAM and a Pentium II (Slot 1) CPU (100MHz FSB) with 450MHz installed. The computer still does the job but I was wondering if it would be possible to tweak the thing a little bit. According to the manual the motherboard supports Pentium II and III CPU's up to 500MHz. Now I know it would not make much sense to upgrade to a 500MHz from a 450 so I was wondering if it would be possible to chuck a Pentium III CPU in with say 1000MHz? The manual does not say you can but by the time of writing how could it? So my question is, is there any difference between a Pentium III 500 and a Pentium III 1000???? Will that motherboard support the 1000 MHz CPU? Or is there some significant differences in the later Pentium III CPU's? Unfortunately the webpage from Jetway is not too helpful either. For those who care to check: http://www.jetway.com.tw/evisn/produ...20bf/720bf.htm Memory4less as an example sells Pentium III CPU's http://www.memory4less.com/cpus/m4l_pentium3.asp The motherboard also supports up to 1.5 GB of RAM (which seems really excessive!) and I was thinking of chucking an additional 128 or maybe 256 MB of RAM in there to speed things up a little. What are your opinions??? Thanks heaps in advance Hans The set-up is quite old and it is not really worth spending much on it to make it go faster. If there is a spare RAM slot or two then hunt around for a second hand 128MB PC133 SDRAM or two as it is cheaper than PC100 RAM. The PC133 RAM usually works with PC100 on a 100MHz FSB if it is installed it the second or third slots after the PC100 RAM, but try before you buy. There were some slot1 PIIIs but they are hard to find now and expensive new as would be a slocket adapter to mount a socket 370 PIII. You may get lucky and find some good bargains on EBay but don't count on it, you would find it cheaper in the long run to buy a new board and CPU with some DDR or faster RAM. If you are lucky the CPU is not multiplier locked so you could increase it and get some more speed that way. Do a search on Google, etc for overclocking advice. The latest Jetway BIOS for the board would be about 3 years old so don't expect much there. |
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