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4gb RAM , two XMS2DHX 2x1gb Kits (CL4 kind)


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I have a GA-965P-S3 v1 motherboard and i had 4x512MB (2g in total ram) and they where OC-ed to 960mhz at 5-5-5-18 and they worked great (memtest-ed them lots of pases) i want to buy from corsair the XMS2 DHX kits two of them and that would be 4gb in total , will it work at the same frequency whitout a problem ( seeing as it runs OC-ed with all 4 banks on , or is it a 4gb all banks thing? ) The problem is that i allready buy-ed a kit , and im now runnig on 3g of ram ( 2x512 and 2x1gb ) they are at 960mhz with 5-5-5-18 but now it does not work anymore , i have crashes after some time and errors with memtest the voltage in bios is 2.2v would the XMS2 DHX kit not work at 5-5-5-18 with 2.2v? or is it just an incompatibility between the 2 types of ram ? they work in Dual-channel mode (2T) 2x512 and 2x1gb , if i buy the other 2gb kit will they work good ? are they not capable of holding 1000 at 5-5-5-18? (this is the code : TWIN2X2048-6400C4DHX )

 

Sorry for my bad english , any help is apreciated!

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There's a big difference between 4 X 512 and 4 X 1024. The MCH has to do some real work on accessing and loading with 4 X 1024 and usually it is best to drop the DRAM speed one level. For example, 4 X 1024 6400DHX will be hard pressed to run stably with 800MHz and very likely will have to be dropped to 667Mhz. Then you can overclock and begin to recoup some of that loss. You will NOT get overclocks like you have now. If you make 800MHz with 4 X 1024 of 6400's, then you are doing well. It's a YRMV kind of thing though.

 

Research this well. It's all over the net. I would go with 2 X 2048 as you will get a higher overclock but even then, do NOT expect the overclock that you now have.

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