Hi

In a moment of extreme stupidity I ordered a stick of PC4000 DDR RAM thinking it ran at 400MHZ. Since then I've discovered that PC4000 is faster than that and I should have got PC3200.

I installed the PC4000 it onto my new system which runs RAM at a max of 400MHZ.

My new system does run the PC4000 RAM but only at 333MHZ and only if the bios RAM speed is set to 'BY SPD'. The only other RAM speed option is 'AUTO'. If I set it to auto then the system runs the RAM at 200MHZ, halves the CPU speed (ATHLON XP 3200) and complains.

Obviously it's my own dumb fault for buying the wrong RAM, but was wondering whether it's possible to set it to run at the 400MHZ my board is capable of, rather than the 333MHZ it uses now (maybe I have to tweak timings / voltages?).

SPEC

Shuttle XPC SN41G2V2 (Nforce mobo)
AMD ATHLON XP 3200
PC4000 DDR 512MB

Cheers,

NKYG

400mhz is the DDR speed...the actual setting is 200mhz. However, from doing a quick search, it appears that the SN41G2V2 is a 333mhz system, so the actual setting would be 166mhz.

I'm quessing that your 3200+ does not & probably never did run at it's proper speed of 2200mhz (11 x 200mhz)...it probably ran at 1833mhz (11 x 166mhz) which is the equivilent of a 2500+

I'm basing that info on the following...note that it says, "(Socket A, Max.FSB 333)"

http://www.newegg.com/app/viewproductdesc.asp?description=56-101-427&DEPA=0

Asus A7N8X-X
1800+ @8x210mhz
512mb PC3200
Ti4200/8X 128mb
WDC 60GB

what kind of pc4000 is it?
what's the size in megabytes?

Abit AS8 LGA775 2.8 Prescott
512 Corsair XMS PC3200
128 meg Radeon 9800 Pro
DUAL 36 GIG WD Raptors
DUAL 21 in. ( 19.8 viewable ) Sony Trinitrons
3+ Mbps cable connection

Hi Tbird. It's Generic stuff (often a risk I know but I thought I'd try it just this once) and it's 512MB.

Jam, after reading your post I went to shuttle's own site and found this:

http://eu.shuttle.com/en/desktopdefault.aspx/tabid-72/170_read-2791/

I think the blurb under memory support answers my question - you need and AGP card present for the system to handle 400MHZ DDR, otherwise the ram won't exceed 333. I'm using the system's onboard graphics, leaving the AGP slot empty so I guess that 333 is the limit anyway if you don't have an AGP card in there.

This leads me to beleive that the ram works fine, and I'm just not exploiting it's full potential.

I also checked out the CPU speed and it is the full 2.2GHZ

So I guess I just spent over the odds.
How annoying.

Thanks for your responses!

NKYG

I knew I should have checked the Shuttle website...lol! Glad you got it figured out.

Asus A7N8X-X
1800+ @8x210mhz
512mb PC3200
Ti4200/8X 128mb
WDC 60GB