ram speed

Amd / Opteron 170
February 15, 2009 at 12:17:36
Specs: win xp pro sp2, s939/2gb
i am confused as how my ram is running at 200mhz ddr400 when i set it at 166mhz ddr333 in bios. also when i set it to 180mhz ddr360 my ram is running at 222mhz ddr444mhz. here is what i currently have it at, how is the ram running at 200mhz? i though that setting the ram run at ddr333, shouldnt the ram speed be at 133mhz? what is the equation for this ram/fsb or fsb/ram? any help would be great, sorry if i asked a newb question.

cpu speed - 2000mhz
multiplier - x8
ht link - 1000mhz
ldt multiplier - x4
bus speed - 250
ram speed - 166mhz

dont know if it helps but i have a dfi lanparty nf4 sli-dr motherboard, an amd opteron 170 processor, 2gb of corsair 3200 pro ram, and a pair of nvidia 9600 gt 1gb 256bit video cards.

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February 15, 2009 at 14:06:23
You apparently don't have a clue how to overclock an AMD system because if that's what you're trying to do, you haven't overclocked anything! The Opteron 170 runs at 2000MHz (10 x 200) by default but you have it clocked at 2000MHz (8 x 250)...what's the point? It's still running at exactly the same speed. Changing the CPU frequency from 200MHz to 250MHz does absolutely nothing to increase performance, at least not the way you've done things.

You need to understand that there is no FSB. All you have to do is run the CPU as fast as possible but at the same time, you have to adjust your settings so that the RAM stays at 200MHz (DDR400), the HT bus stays at 1000MHz & the PCI-e bus stays at 100MHz. Actually, it appears you have all the settings correct except for the CPU multiplier. Try it at x9 (2250MHz) or x10 (2500MHz). Do NOT change the RAM settings...you do NOT have to overclock the RAM. There is no ratio to worry about because there is no FSB.


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