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RAM Overclocking Help Needed

Last response: in Overclocking
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December 28, 2009 12:01:18 PM

Hey,
I recently bought another 2GB of RAM to make up 4GB. The RAM I purchased was not the same as the RAM I already had but was the same 2x1 DDR2 PC2-6400. Does it matter that the new RAM is Kingston Hyper X whereas my older RAM is just normal Kingston?
Before, I was able to overclock my E5200 to 4.00GHz (12.5x320 @1.6v) easily as I have a Corsair H50 Watercooler. My RAM timings on the Hyper X are 5-5-5-15 but my older RAM is 5-5-5-18, does this matter? When overclocking I would set it to 4-4-4-15 anyway.
When I do boot with all my RAM in I often get the Blue Screen unless, like now, I set everything to Normal, with the RAM speed at a measly 557 mhz, my System page tells me that I have 4.00GB (2.00GB Usable).

I am running Windows 7 Ultimate 32-bit
Mobo - Gigabyte EG41MF-S2H
Graphics - Asus EAH 4870

Any Hlp would be much appreciated, thanks.

a b } Memory
a c 197 K Overclocking
December 28, 2009 12:29:46 PM

Your attempt at overclocking your RAM is limiting you CPU overclock.

Set your memory clock multiplier to 2.00 in your BIOS. That way, your memory clock will be twice as fast as the FSB frequency.

We discuss memory overclocking here :
http://www.tomshardware.com/forum/251715-29-ratio-myth
December 28, 2009 3:31:38 PM

Thanks.
!