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TW3X4G1333C9A G + Intel DP55WB + Core i5 Issues


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I have two nearly identical systems:

Intel DP55WB Mobo

Intel Core i5 750

Corsair TW3X4G1333C9A G (2 x 4GB) 1.5v

Win7 RTM x64

(Computer A) Enermax 405w PSU + Nvidia 8800 GTS 640

(Computer B) Corsair 750w PSU + Nvidia GTX 260


Both computers are massively instable (BSOD, freezing) when idle with EIST/C State enabled. With EIST/C State disabled, they are much more stable at all times... but Computer B has random issues unless the memory voltage is increased to 1.6v

I've spoke with Intel tech support about this, and they insist that it is a compatibility issue between the motherboard and the Corsair sticks. I am not overclocking and the memory timings are at stock 9-9-9-24 2T. Memtest causes instant reboots on both machines at stock settings. Are there any known issues or is anyone else having similar problems?

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  • Corsair Employees
Please make sure that you have the latest bios and load setup defaults and then set the memory Voltage to 1.6 Volts then set the timings manually to the tested settings for the specific module you have, and test the modules one at a time with http://www.memtest.org to be sure one is not failing. If you still get errors, please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! However, if you get errors with both modules that would suggest some other problem and I would test them in another system or MB to be sure. In addition, with some MB's (Mostly ASUS) you have to disable legacy USB in the bios when running any memory test.
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I re-enabled EIST/C State, increased ram voltage to 1.6v, and manually set timings. I am currently running memtest86+ 4.0.... so far so good. I had a question however: Intel's memory timing config page has many more values than the typical CAS 9-9-9-24. These values can be seen in the core i7 thread for intel motherboards sticky: http://forum.corsair.com/forums/showthread.php?t=76945

Can you provide the correct/stock values for my sticks so I can be certain the BIOS isn't picking an incorrect value?

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