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ASUS P5B + 2gb of Corsair XMS2 Issue


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I am having an issue with my ASUS P5B bios (Version 1803). It wont show any options (anywhere) to change the ram timings of my 2x 1gb DDR2 800Mhz Corsair CM2X1024-6400C4DHX memory.


When I had my old generic 667mhz ram in, I did have the options available to me.


CPU-Z (and other programs) all say that my ram is currently running at 5-5-5-18. I brought the ram specifically because it said it'd run at 4-4-4-12, and it does not.


So uh, whats wrong with it? Any idea?

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I updated the BIOS, and I found the settings. However, I don't know too much about CAS Latency and their settings, so I am hoping someone can please help me.


I set the first 4 to 4-4-4-12 and it works fine, but the rest I dunno. They are:


DRAM Write Recovery Time: 6


Rank Write to Read Delay: 10

Read to Precharge Delay: 10

Write to Precharge Delay: 11


What should I set those to for best performance?

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