MoFoQ Posted December 13, 2004 Share Posted December 13, 2004 For some reason, when I use two sticks of 512MB DDR550 Corsairs (CMX512-4400C25) at the same time, it would fail memtest (1.30-1.40) on test #5 at anything about 225MHz FSB (DDR450) but it would be fine upto 260FSB (DDR520MHz) when it's only one at a time (I've tested each of the two slots with each of the two dimms). I've even reduced LDT and Hypertransport to 1x and 4x respectively (though it works fine even at 2x LDT and 9x Hypertransport) to make sure it's not the cpu. I've even upped the DDR voltage to 2.8v (the BIOS doesn't do 2.75v). I've also replaced the original el-cheapo passive chipset heatsink that was thermal-taped on with a bigger Coolermaster with Artic Silver 5 (and I added a small fan) (amazing it still fits). With both DIMMS in and at 226MHz FSB, I would get 4 errors per pass of test #5. 16 per pass for 227, 228 would get a few thousand, etc. At 225, I got none and I let it run for roughly two days (3192 successful passes of test#5). I need to RMA these anyways (the online store I got them from sent me the wrong ones and they won't respond to me; ordered black, got platinum). But before I drop by (I work in Fremont, just down the street from Corsair's offices), I want to know if there are anything else I can try to get it to pass at a higher FSB (or at least something closer to the specs; 275MHz) Thanks. BTW, the BIOS on the shuttle is the latest. It was one of the first things I tested. And the cpu is a sempron 3100+. The max total MHz I can get on that shuttle with this cpu is 2339 and still be stable in memtest (one stick). Link to comment Share on other sites More sharing options...
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