Hi guys, I have 2 x 1GB sticks of Crucial Ballistix 'Tracer' DDR500. My motherboard is an MSI K8N NEO4 Platinum (non-sli). Up until recently I was experiencing BSOD's on a regular basis, system reboots, freezes etc you name it! Memtest reported 0 errors. After exhausting every possibility, I somehow found the following; Using DIMM socket 1 (Green socket), causes the comp to crash/reboot etc. Using DIMM socket 2 (Purple socket), has no problems. Using DIMM socket 3 (Green socket) does not work properly Using DIMM socket 4 (Purple socket) works, but throws a couple of problems here and there. So the only way I get a really stable system is by using 1 stick of 1GB in DIMM2. Using sockets 2+3 = Does not work properly (reports as DDR333) Using sockets 2+4 = Works, but strange errors every so often. Strange, because MSI say to use the green sockets first! Is this the motherboard? Its using the latest BIOS, should I just sell the memory and buy another type? Im running it at auto (which when I used to run with socket 1+2 it was 8-3-3-3, so nothing hardcore!) It's odd I received no errors in memtest, yet the comp would be seriously unstable...? The memory is not a matched pair I dont think.