RAM recognition
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Posted by rickbear on November 11, 2007, 9:02 am
Please log in for more thread options I just bought the GigaByte Motherboard GA-P35-DS3R and some new ram: 2x1GB Kingston KHX8500D2K2/2G. The type is PC2-8500 1066. But The motherboard only recognize them as PC2-6400 800. I upgraded to the latest BIOS and the Motherboard should be able to see and use PC2-8500. Is there anything I could do? Anything I am doing wrong? I'm not an overclocker and have no experience in that. But can I without any concern change the multiplier in BIOS to so that results in 1066 instead of 800? I don't want harm my system. - rick - | |||||||||||||
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Posted by Paul on November 11, 2007, 11:59 am
Please log in for more thread options At least for some "enthusiast" memory products, the SPD on the DIMM comes with lower speed settings stored in it. That is done for compatibility reasons - it helps the RAM work with as many motherboards as possible. It'll start up at DDR2-800, because AFAIK, that is the top speed approved by JEDEC. The user is expected to manually set the memory speed and timing information themselves, in the BIOS. For an enthusiast RAM, there should be a spec sheet, with a recommended timing (i.e. 5-5-5-15), a recommended speed (i.e. DDR2-1066), and a suggestion for a max voltage needed to achieve it (something like 2.2V or whatever they could get away with). Your datasheet is here. Have fun :-) http://www.valueram.com/datasheets/KHX8500D2K2_2G.pdf You can test with memtest86+ via a bootable floppy or CD, from this site. The purpose of running memtest86+ first, is to prevent Windows from being corrupted by bad RAM. Once you've set everything up, and memtest manages a couple passes with zero errors, then you can consider booting into Windows again. Note that memtest doesn't guarantee no problems - one guy I helped had his Windows install corrupted anyway, even though memtest passed. http://www.memtest.org (current version memtest86+ is 1.70) Only use as much voltage as is needed to make it error free. The memory will run a little cooler, if you don't go crazy with the voltage. Paul | |||||||||||||
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>
> I just bought the GigaByte Motherboard GA-P35-DS3R and some new ram:
> 2x1GB Kingston KHX8500D2K2/2G. The type is PC2-8500 1066. But The
> motherboard only recognize them as PC2-6400 800. I upgraded to the
> latest BIOS and the Motherboard should be able to see and use
> PC2-8500.
>
> Is there anything I could do? Anything I am doing wrong?
> I'm not an overclocker and have no experience in that. But can I
> without any concern change the multiplier in BIOS to so that results
> in 1066 instead of 800? I don't want harm my system.
>
> - rick -
>