Hey there everybody,

Last week I bought some Corsair XMS2 DDR2-800 RAM off eBay, brand new, never opened. Before this purchase, I ran SuperTalent DDR2-533. I've got a Gigabyte GA-MA790X-DS4 running an AMD Windsor 4600+ AM2. I had the SuperTalent running at a 266Mhz FSB. Since I got the Corsair and popped it in, I haven't been able to get the box running faster than 200Mhz FSB. The damn sticks won't even run on the settings the old SuperTalents would

I'm pretty sure that all this hardware can handle 300Mhz FSB or better, just don't know what I'm doing wrong. I've tried running 2.4Ghz @ 9x 266MhzFSB, 2.4Ghz @ 8x 300MhzFSB, and 2.4Ghz @ 7x 333MhzFSB... none of them work.

I'm at a loss. If there's any additional info you might need to help diagnose the situation, just ask. Any suggestions or tips are greatly appreciated.

Info:
CPU: AMD 4600+ Windsor AM2 2.4Ghz 2000Mhz HT
Mobo: Gigabyte GA-MA790X-DS4 / BIOS version F2 11/2/2007 (original)
Ram: Corsair XMS2 DDR2-800 (new) / SuperTalent DDR2-533 (old / ran 266FSB)
VidCard: e-Vga Superclocked 8800GT
PSU: Enermax 550W

Can you post a pic of cpu-z showing us this information :-)

Oh ya, I forgot about those

These screens are as of right now, no tweaks... just default.

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Well your memory is running right were it's suppose to at that speed. When you crank up the fsb you may need to manually set a different fsb:dram ratio. It maybe called cpu:dram or something simular.

Alright, well I'll check out my BIOS settings and see if I can't get it working how I want it.

Double post >.>

But I did some poking around in my BIOS, and there was no direct way to change the fsb:dram ratio. So I updated the BIOS to the latest version, and while there still was no specific setting that would allow me to change the fsb:dram ratio, I went ahead and set the FSB to 400Mhz, and the CPU multiplier to 6x. As seen in the attachments, I was able to boot with these settings, and the RAM was now running at 480Mhz! I guess that's good.

Although the system booted, it crashed as soon as I started playing music. I backed the FSB down to 370Mhz and am now running a multiplier of 370Mhz and the RAM is still running at 480Mhz... which I suppose is still pretty good. Do you OC pimps think I could get the 400Mhz FSB stable if I bumped the RAM voltage up from the stock 1.9V? If so, how much?

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Most DDR2 should be fine at 2.0v, so long as you have good airflow in your case

I have my Geil Ultra running at 2.2v (rated @ 2.1v) which needs some extra airflow, in the form of an 80mm fan bodged on top of the heatspreaders, to hit its max FSB OC.

Having said that, I don't think you'll get much more than 480Mhz from that RAM, thats not a bad overclock for budget stuff. Good luck with it bro

Quote: Originally Posted by Dex Most DDR2 should be fine at 2.0v, so long as you have good airflow in your case I have my Geil Ultra running at 2.2v (rated @ 2.1v) which needs some extra airflow, in the form of an 80mm fan bodged on top of the heatspreaders, to hit its max FSB OC. Having said that, I don't think you'll get much more than 480Mhz from that RAM, thats not a bad overclock for budget stuff. Good luck with it bro

Heh, thanks. I wasn't even intentionally trying to overclock the RAM... but I'm not complaining Your help is appreciated.