SkyNT Posted November 29, 2010 Share Posted November 29, 2010 I'm here because I spent the last 4 hours Googling answers and running Memtest86+ to no avail. Win 7 64-bit i7 860 @2.8ghz Gigabyte P55A-UD3 Saphire Radeon HD 5770 2x1TB WD in RAID0 Upgrade from 2x2GB TW3X4G1333C9A to 2x2x2GB TW3X4G1333C9A Never OCed anything. Just installed a 2x2GB TW3X4G1333C9A in the second channel along with another pair of 2x2GB TW3X4G1333C9A I've been using fine since last February. Now my computer has begun acting very glitchy. The worst of which includes random shutdowns (similar to when a CPU overheats but I checked the PC temp and all is systems go). Other symptoms include flickering screen, in-and-out aero transparency, random application crashes. A windows diagnostic returned a BSOD with PFN_LIST_CORRUPT I flushed my pagefile. Memtest86+ says the RAM is OK. I'm about to reformat as a last resort (I do so every two months or so anyways). Any last ideas of a cause in the meantime? Link to comment Share on other sites More sharing options...
trackrat Posted November 29, 2010 Share Posted November 29, 2010 Mixing of RAM, even of the same part number and version is never recommended or guaranteed to work per the Memory Upgrade Guide link in my signature. The latency ratings are for one tested, matched kit, not for the RAM modules. You can try 11-11-11-30 2T and increasing the QPI voltage to 1.35 V to see if this resolves the issue. Link to comment Share on other sites More sharing options...
SkyNT Posted November 29, 2010 Author Share Posted November 29, 2010 Hello and thanks for the reply. I was able to test the new RAM individually (as opposed to an upgrade) and system failures are even worse with it in alone. Back to my old pair and everything is running smooth. Right now I'm looking at an RMA. I must say I am a little baffled at how complicated this RAM business has become. Back in the day we'd stick 128, 256 and 512MB sticks in right left and center, totally mismatched, and the cheap stuff at that, never a single hitch. So imagine my surprise to discover serious hardware problems when combining, no less than two identical model numbers of mid-range memory. Link to comment Share on other sites More sharing options...
trackrat Posted November 29, 2010 Share Posted November 29, 2010 When using Memtest 86+ for testing of DIMMs you should test them in the primary slot, one DIMM at a time for accurate results. CPU/RAM frequency has increased significantly over the years and as a result requires that everything be perfect to function without issues. Link to comment Share on other sites More sharing options...
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