Memory could not be read errors in all games.

[uber]

Whenever I play a game, I usually get a memory could not be "read" error or a blue screen that seems similar. I know ive told you about this before but I have taken down my RAM timings. I have one stick of Corsair pro XMS 512 and two sticks of kingston hyperX 256 dual channel. I believe they are all ddr400 with a 2.0 perfered cas latency.
Here are my settings from the bios.

(Defaults)
Cas Latency: 3.0 (It won't function when I set it to two. I am not entirely sure, so I will test more later.)
Bank Interleave: Disabled
Precharge to Active (TRP): 4T
active to cmd (TRCD): 4T
Active to Precharge (TRAS): 9T
Ref to act/ref to ref (TRFC): 15T
Act 0 to act 1 (TRRD): 3T
DRAM command rate: 2T

I have downclocked the DRAM frequency from 400 to 266 as it seems to improve the length of time I can play the game.
Please do your best to figure out what my problem is.

 

[linker]

try removing the corsair stick, did you upgrade recently? it could actually be a bad stick of ram. otherwise, try checking for a bios update, theres a possibility that your motherboard isnt supporting the two types of ram very well. i would recommend you dont downclock since the ram should all run fine at SPD

 

[DJ-CHRIS]

The corsair is most likely bad ram