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How does RAM effect x58 overclocking?

post #1 of 5
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Will be looking to push my 950 to ~4GHz in the future (probably will need a better cooler though). Just wondering what part RAM plays in x58 overclocking, looking to get a cheap 12Gb kit (http://ncix.com/products/index.php?s...1312),it's a Corsair DDR3-1333 CL-9-9-9-24 kit.
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post #2 of 5
It depends where your bclk winds up in relation to the memory divider when OCing.
For 4Ghz if you were to go 200 x 20 with a 2:8 memory divider you will end up with 1600Mhz memory, you can drop the divider to 2:6 for 1333mhz.

If you use 180-190 bclk & 2:8 divider you would end up overclocking the memory to 1440 - 1520Mhz. If your memory doesn't overclock that high you would have to drop the divider to 2:6, & end up with underclocked memory.
    
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post #3 of 5
I'd advise against that, using 12gb ddr31333 is hard to over clock with because of two reasons. 1: 1333mhz memory usually doesn't overclock well so you end up with having to use the lowest divider which ends up being in the 11xx or 12xx range 2: because 12gb of memory is hard to on the memory controller thus making it even harder to overclock
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post #4 of 5
it does not really matter as long as you do your math homework and keep the memory at the correct speed.
post #5 of 5
I didn't have to much of an issue. If. Went higher it probably would butbthe only thing I have to do was up dimm voltage to 1.55 from 1.5 and vtt by +50mv. After that I was ok up to 4.3 with just vcore but I settled on 4050 to keep it at 1.3V.

A lotnof it will depend on which spu and whether it has an unlocked multi.
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