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CMX512-4400C25 Bad Module


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I bought a pair of TwinX CMX512-4400C25 ram almost a year ago. Lately, my system has been crashing a lot. I've tested the ram individually and one runs memtest86+ fine at DDR400 and DDR550 at 2.5-4-4-8 timings at 2T command rate. The other one returns a lot of errors even run at DDR400 at the same timings at default or up to 2.75 volts. This is at stock CPU speeds. I can't get the bad module to boot up windows at DDR400 and correct timings, but the other one runs perfectly.


The motherboard is a A8N-SLI Deluxe.


I actually tried the Express return link in your signature, but neither sticks contain the "Serial Number" and it's required in the form. Does this mean I need to use the other online method? Both XMS and lot number is on the holographic sticker though.

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