Archived from groups: comp.sys.ibm.pc.hardware.chips (
More info?)
Derek Baker wrote:
> Rob Stow wrote:
>
>>Derek Baker wrote:
>>
>>
>>>http://www.x86-secret.com/popups/articleswindow.php?id=105
>>>
>>>Look at the restrictions on having 4 DIMMs:
>>>http://www.x86-secret.com/articles/cpu/s939/s939-3.htm
>>>
>>
>>Basically all it requires is that when you have DIMMs in
>>both Slots 1 & 2 they have to be matched and when you have
>>DIMMs in both Slots 3 & 4 they have to be matched. And
>>the DIMMs in (1 & 2) don't even have to be the same speed
>>as the ones in (3&4).
>
>
> The way I'm reading it, if you have four double-sided DIMMs, there's no
> way you can get DDR400. It's DDR333 with 2T, and DDR200 (!) with 1T.
I noticed that, but didn't think it was much of an issue:
if four big DIMMs is important to you, wouldn't you be
using an Opteron dualie instead of pissing around with
Athlon64 ?
>
>
>>FWIW, you also see the same kind of thing with the Opteron
>>motherboards.
>>
>>What I would really like to see is similar charts for HP's
>>four-way Opty servers, which have 8 DIMM slots per processor.
>>Such charts are probably there - I just haven't looked too
>>hard yet.
>>
>>
>>>Does the Pentium 4 have similar restrictions?
>>>
>>
>>It is not the P4 processor that causes those restrictions - it
>>is the motherboard, the chipset/memory controller in particular.
>>And yes, the Pentium 4 motherboards typically have the same
>>kinds of restrictions. Just go to a site like Asus and look
>>at the manuals for some of the newer P4 motherboards.
>
>
>
>
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