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#1
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Are the DIMMs on the Crucial websites the only Crucial ones that will work?
Are the DIMMs suggested at the manuracturers' websites the only ones
that will work. Or even the best ones? (I hate to spend too much money fixing up a computer that's 7 years old) Looking at crucial.com, for my Dell, Dimension 4600, for example, it only recommends two 1-gb DIMM, pc2700, one 333 and one 400, but there are others for sale used, by Crucial (not specifically for that computer) with the same values but different part number. Maybe I watch too many detective shows on tv, but I'm thinking they make small, tiny, or no changes to the DIMMs just so they can give them a new part number, so the competition from 2nd hand DIMMs won't affect them so much. Allthough in a way that seems silly, since how much could used parts ever compete with new anyhow? At any rate, if it's 1gig, 2700, DDR-333, 184 pins, non-buffered, non-ECC, and non-parity, should it work fine on a desktop computer that wants that? Alternatively, is there a good way to look up the dimms for sale to see if the CL and voltage are the same? Just googling them? CL and voltage don't seem to be listed in ads for used memory, it seems. Thanks. |
#2
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Are the DIMMs on the Crucial websites the only Crucial ones thatwill work?
mm wrote:
Are the DIMMs suggested at the manuracturers' websites the only ones that will work. Or even the best ones? (I hate to spend too much money fixing up a computer that's 7 years old) Looking at crucial.com, for my Dell, Dimension 4600, for example, it only recommends two 1-gb DIMM, pc2700, one 333 and one 400, but there are others for sale used, by Crucial (not specifically for that computer) with the same values but different part number. Maybe I watch too many detective shows on tv, but I'm thinking they make small, tiny, or no changes to the DIMMs just so they can give them a new part number, so the competition from 2nd hand DIMMs won't affect them so much. Allthough in a way that seems silly, since how much could used parts ever compete with new anyhow? At any rate, if it's 1gig, 2700, DDR-333, 184 pins, non-buffered, non-ECC, and non-parity, should it work fine on a desktop computer that wants that? Alternatively, is there a good way to look up the dimms for sale to see if the CL and voltage are the same? Just googling them? CL and voltage don't seem to be listed in ads for used memory, it seems. Thanks. There are two kinds of DIMMs at that density. High density: (16) 128Mx4 chips Low density: 2x(8) 64Mx8 chips The first formulation, is one bank consisting of 16 chips, spread over both sides of the module. The second formulation is dual bank, eight chips per side. The low density formulation, works in any DDR computer that supports 1GB sticks. The high density, may work in a DDR computer that supports 2GB sticks (due to the row/column addressing difference). I wouldn't accept one of the high density sticks, if you gave it to me for free. Even on chipsets where it is "compatible", you may not be able to fill the bus with them, and have them error free. Generally, if you go to a site like Newegg, chances are good they'll sell you a low density 1GB module. Ebay was full of high density 1GB DDR sticks, with prices that used to be $20 cheaper for the low density ones. So consumers would be tempted to cut corners and get the high density ones. The best place for x4 memory chips, is on registered server DIMMs, not on consumer desktop DIMMs. The companies that make the high density DIMMs aren't proud of what they've done. You can *never* get a datasheet for those x4 modules. And Intel, in its datasheets, only claims x8 and x16 chips are compatible in certain forms, with its desktop chipsets. You won't find x4 mentioned there. I think I'd price around, and see if you can do better on a retail site like Newegg. $50 per gigabyte sounds a bit high. This 2x1GB kit is $75, so you can save about $25. Of course, the shipping may differ from one company to the next. http://www.newegg.com/Product/Produc...82E16820231047 The chipset on that motherboard, is 865G (based on checking an Ebay advert for a 4600 motherboard). So I wouldn't expect too much trouble from that (it's an Intel chipset). There are occasionally server motherboards, that run the DIMM slots precisely at 2.5V, and sometimes the RAM really needs the 2.6 or 2.7V shown in the advert. As long as the retailer offers a good return policy, you should be OK. Paul |
#3
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Are the DIMMs on the Crucial websites the only Crucial ones that will work?
On Fri, 03 Dec 2010 07:13:07 -0500, Paul wrote:
mm wrote: Are the DIMMs suggested at the manuracturers' websites the only ones that will work. Or even the best ones? (I hate to spend too much money fixing up a computer that's 7 years old) Looking at crucial.com, for my Dell, Dimension 4600, for example, it only recommends two 1-gb DIMM, pc2700, one 333 and one 400, but there are others for sale used, by Crucial (not specifically for that computer) with the same values but different part number. Maybe I watch too many detective shows on tv, but I'm thinking they make small, tiny, or no changes to the DIMMs just so they can give them a new part number, so the competition from 2nd hand DIMMs won't affect them so much. Allthough in a way that seems silly, since how much could used parts ever compete with new anyhow? At any rate, if it's 1gig, 2700, DDR-333, 184 pins, non-buffered, non-ECC, and non-parity, should it work fine on a desktop computer that wants that? Alternatively, is there a good way to look up the dimms for sale to see if the CL and voltage are the same? Just googling them? CL and voltage don't seem to be listed in ads for used memory, it seems. Thanks. There are two kinds of DIMMs at that density. High density: (16) 128Mx4 chips Low density: 2x(8) 64Mx8 chips The first formulation, is one bank consisting of 16 chips, spread over both sides of the module. The second formulation is dual bank, eight chips per side. Now I understand the terminology. The low density formulation, works in any DDR computer that supports 1GB sticks. The high density, may work in a DDR computer that supports 2GB sticks (due to the row/column addressing difference). I wouldn't accept one of the high density sticks, if you gave it to me for free. Even on chipsets where it is "compatible", you may not be able to fill the bus with them, and have them error free. Okay. No high density for me either. Thanks. Generally, if you go to a site like Newegg, chances are good they'll sell you a low density 1GB module. Ebay was full of high density 1GB DDR sticks, with prices that used to be $20 cheaper for the low density ones. So consumers would be tempted to cut corners and get the high density ones. I woudl have been if I didnt' realize there was a difference. FTR there were still some low-density Crucial sticks for sale, and I looked up the model number of one at Crucial and it has all the same features as the stick their software recommends now. Low-density, no-ECC, CL=2.5, 2.5v, pc2700, 333. The best place for x4 memory chips, is on registered server DIMMs, not on consumer desktop DIMMs. The companies that make the high density DIMMs aren't proud of what they've done. You can *never* get a datasheet for those x4 modules. And Intel, in its datasheets, only claims x8 and x16 chips are compatible in certain forms, with its desktop chipsets. You won't find x4 mentioned there. I think I'd price around, and see if you can do better on a retail site like Newegg. $50 per gigabyte sounds a bit high. This 2x1GB kit is $75, so you can save about $25. Of course, the shipping may differ from one company to the next. http://www.newegg.com/Product/Produc...82E16820231047 I should ask you about the metal heat spreader. Seems like a good idea but Kingston and Crucial don't use them afaik. The chipset on that motherboard, is 865G (based on checking an Ebay advert for a 4600 motherboard). So I wouldn't expect too much trouble from that (it's an Intel chipset). There OT for this ng - I'm in "trouble" in another newsgroup because when installing windows, I didn't install the Dell Chipset driver from the CD that came with the computer. Yet everything so far seem to be working fine. Should I install that driver now -- they say it has to be done first? Or format the partition and reinstall Windows, doing that driver first? This was meant to be a trial install anyhow. are occasionally server motherboards, that run the DIMM slots precisely at 2.5V, and sometimes the RAM really needs the 2.6 or 2.7V shown in the advert. As long as the retailer offers a good return policy, you should be OK. Good. Thanks a lot. Paul |
#4
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Are the DIMMs on the Crucial websites the only Crucial ones thatwill work?
mm wrote:
I should ask you about the metal heat spreader. Seems like a good idea but Kingston and Crucial don't use them afaik. In some cases, heat spreaders are used for the purpose, of hiding the chip numbers. Or perhaps UTT RAM is under there (a lesser grade of memory, where the testing is done by the module manufacturer). The module maker, is never as good as the factory, at testing chips. "What are UTT Memory ?" http://www.simmtester.com/page/news/...ws.asp?num=124 Especially on DDR3, there probably is no need of a heat spreader. Module power is around 2 watts or less. DDR2 is a similar situation. Perhaps with an abusive level of VDimm applied to the module, the spreader helps. But the spreader also blocks the air channel between DIMM slots, so in fact the spreader, depending on design, can actually work against keeping a reasonable chip temperature. The only time a heat spreader was really mandatory, was with RDIMM designs (RAMBUS). That is a different memory architecture, where an individual chip on the module can be accessed, and that chip gets hot. Due to the possibility of hot spots, RAMBUS modules have heat spreaders riveted to the module. You get two functions that way - chip numbers are hidden, but with the rivets, it's less likely the user will remove the heat spreader. http://upload.wikimedia.org/wikipedi...BUS-Memory.jpg (Chips were connected serially on those modules. One chip would respond to a query. Continuous probing of a single chip, can cause the chip to dissipate, maybe at a guess, about 4 watts. That was an estimate I saw at the time, for how much power the package the chip was in, would have to dissipate.) http://web.archive.org/web/200010102...e.part3-6.html ( same as http://arstechnica.com/paedia/r/ram_...e.part3-6.html, only the archived copy still has the picture ) The chipset on that motherboard, is 865G (based on checking an Ebay advert for a 4600 motherboard). So I wouldn't expect too much trouble from that (it's an Intel chipset). There OT for this ng - I'm in "trouble" in another newsgroup because when installing windows, I didn't install the Dell Chipset driver from the CD that came with the computer. Yet everything so far seem to be working fine. Should I install that driver now -- they say it has to be done first? Or format the partition and reinstall Windows, doing that driver first? This was meant to be a trial install anyhow. Chipset drivers can be bundled with the OS. If you had a WinXP SP3 installer CD for example, it's possible the release date of that, might be "after 865G". In which case, the chipset driver might already be there. The thing is, the only thing that has to be immediately resolved, is storage driver. And that can be resolved by pressing F6 and putting a custom driver into place (like if your board had RAID, and you were doing an OS install to the RAID). The other elements of chipset drivers, may include network interfaces, something for the AGP slot, and so on. The reason the video can start without it, is the hardware supports VESA mode and the video card has a VESA BIOS, and the bus path to the video card (or built-in), may have a "PCI look" to it. The end result, is the OS can work at 640x480 in low color, right after you install. It means, you can install drivers out of order at that point in time, if you wish. The operating system enforces proper resolution, via the number of reboots. So if you do things in the wrong order, it probably results in more reboots than are absolutely necessary. As a result, I wouldn't say "chipset driver package is critical". It is a component in making a "clean Device Manager", it can enable some other components to work properly (and they will, after enough reboots, that any dependencies can be recognized and resolved). But you could run the OS with its 640x480 screen and no working network if you wanted, and get some work done. The question would be, whether you could get data back out of the system when you wanted to. Perhaps a hard drive on a removable tray, would be your data interface, as an example. You could always make a claim, that just about any driver was critical (if the function it provided was something you needed at the moment). The chipset drivers have their place, but there's no "emergency" there. I've also read of suggestions, to install OS, install latest service pack, and then install chipset drivers. That is on the theory, that the chipset driver package behaves differently when a later Service Pack is present. Perhaps, but I'm not really sure that's true or not. But by delaying the chipset installation, you'd sure be violating what the other people were saying about installing them right away. In my work with installing graphics drivers, I noticed that the system remained working, no matter what order I did them in. Once the "driver stack" realized the state of something underneath it, had changed, on the next reboot, that layer of the stack could take advantage of the change. So an AGP card, operating in PCI mode, once the AGP driver was in place, would then have the option of using AGP commands, using the GART and so on. The clever people who designed this stuff, set it up in such a way, that you'd always have some level of functionality, and that level would improve, the more drivers that got installed. The reverse of that, happens with storage drivers. There, the hardware manufacturers seem to be determined, to put as many roadblocks in your path as possible. They make it virtually impossible, to switch from IDE to RAID for example. In that case, VEN/DEV/SUBSYS/ClassCode are used like a stick, to beat the user into submission. That has improved a tiny bit in Windows 7, where at least you can "arm" the OS just before shutdown, to re-examine the hardware and available driver on the next restart. But many WinXP RAID situations, it can be very hard to make changes like that. And since hacks exist, to make it smoother, it implies there was no need to make it so hard in the first place. Presumably, the belief was, by preventing mode changes, between IDE, AHCI, RAID, there would be fewer support phone calls. Some chipset drivers are "stubs". What they do, is remove the "whining" of the New Hardware wizard. The only tangible thing they offer, is an identity string for Device Manager, so the item gets a proper label. So not all components of the chipset driver package, are significant from a technical standpoint. Take USB as an example. Microsoft "owns" the USB drivers. If you examine one of those old chipset driver packages (like the one you'll be using for your 865G), you'll find the Intel USB driver, just "calls" the Microsoft driver, to get any work done. In that case, Intel didn't "write code", as much as just redirecting the installation to stuff already built into Windows. That's why, if you do this work all the time, it pays to look at the INF files that are part of the chipset drivers. They'll tell you a few things, about what is actually going on, and how things get done. (When I look at them, it's just a hobby.) Paul |
#5
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Are the DIMMs on the Crucial websites the only Crucial ones thatwill work?
Paul wrote:
mm wrote: Are the DIMMs suggested at the manuracturers' websites the only ones that will work. Or even the best ones? (I hate to spend too much money fixing up a computer that's 7 years old) Looking at crucial.com, for my Dell, Dimension 4600, for example, it only recommends two 1-gb DIMM, pc2700, one 333 and one 400, but there are others for sale used, by Crucial (not specifically for that computer) with the same values but different part number. Maybe I watch too many detective shows on tv, but I'm thinking they make small, tiny, or no changes to the DIMMs just so they can give them a new part number, so the competition from 2nd hand DIMMs won't affect them so much. Allthough in a way that seems silly, since how much could used parts ever compete with new anyhow? At any rate, if it's 1gig, 2700, DDR-333, 184 pins, non-buffered, non-ECC, and non-parity, should it work fine on a desktop computer that wants that? Alternatively, is there a good way to look up the dimms for sale to see if the CL and voltage are the same? Just googling them? CL and voltage don't seem to be listed in ads for used memory, it seems. Thanks. There are two kinds of DIMMs at that density. High density: (16) 128Mx4 chips Low density: 2x(8) 64Mx8 chips The first formulation, is one bank consisting of 16 chips, spread over both sides of the module. The second formulation is dual bank, eight chips per side. The low density formulation, works in any DDR computer that supports 1GB sticks. The high density, may work in a DDR computer that supports 2GB sticks (due to the row/column addressing difference). I wouldn't accept one of the high density sticks, if you gave it to me for free. Even on chipsets where it is "compatible", you may not be able to fill the bus with them, and have them error free. Generally, if you go to a site like Newegg, chances are good they'll sell you a low density 1GB module. Ebay was full of high density 1GB DDR sticks, with prices that used to be $20 cheaper for the low density ones. So consumers would be tempted to cut corners and get the high density ones. The best place for x4 memory chips, is on registered server DIMMs, not on consumer desktop DIMMs. The companies that make the high density DIMMs aren't proud of what they've done. You can *never* get a datasheet for those x4 modules. And Intel, in its datasheets, only claims x8 and x16 chips are compatible in certain forms, with its desktop chipsets. You won't find x4 mentioned there. I think I'd price around, and see if you can do better on a retail site like Newegg. $50 per gigabyte sounds a bit high. This 2x1GB kit is $75, so you can save about $25. Of course, the shipping may differ from one company to the next. http://www.newegg.com/Product/Produc...82E16820231047 The chipset on that motherboard, is 865G (based on checking an Ebay advert for a 4600 motherboard). So I wouldn't expect too much trouble from that (it's an Intel chipset). There are occasionally server motherboards, that run the DIMM slots precisely at 2.5V, and sometimes the RAM really needs the 2.6 or 2.7V shown in the advert. As long as the retailer offers a good return policy, you should be OK. Paul I was gonna suggest getting the fastest ram you could find. But I remembered that my dell GX270 SFF claims that it supports up to 2GB of PC2700 but only 1GB of PC3200. What's that all about? |
#6
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Are the DIMMs on the Crucial websites the only Crucial ones thatwill work?
mike wrote:
I was gonna suggest getting the fastest ram you could find. But I remembered that my dell GX270 SFF claims that it supports up to 2GB of PC2700 but only 1GB of PC3200. What's that all about? The memory bus can be sensitive to loading. One stick can be driven faster, than two sticks on a bus segment. They suggest different clock speeds for them, to make them error free. A retail motherboard, is more likely to have a BIOS setting, to allow adjustment and tweaking of the speed setting. On something like a Dell (not Alienware), you're more likely for the speed to be fixed by the BIOS, and no adjustment is shown. If they want to run four sticks slower, there's nothing you can do about it. Paul |
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