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I bought this computer used and it came with corsair memory. It has 4 sticks of xms2 memory. All sticks are cm2x1024-6400. One pair is xms6405v4.1 and have consecutive serial numbers. The other pair is xms6405v5.1 and do not have consecutive serial numbers.

Presently I only have the version 4.1 pair installed. All is running fine.


System: Asus p5n32-e sli motherboard -- Intel qx6700 processor -- EVGA 8800gtx video card -- Arctic Freezer 7 Pro heat sink -- Windows xp pro


First question---If I upgrade to Windows Vista, can I use the other 2 sticks of ram that are version 5.1 and not sequentially numbered?


Second question--- Data sheet says the timings for the ram are 5-5-5-12 at 1.9v and are spd programmed at those values. However, they are running at 5-5-5-18 at 1.8v. Should I leave well enough alone and not change the last value?

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You shouldn't have any problem running 4 GB in Vista, just make sure you have this patch first: http://support.microsoft.com/kb/929777. I would recommend setting the memory voltage manually to 1.9 volts to ensure stability, and if you like, you can adjust the timings to 5-5-5-12 which is how these modules are tested.
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