I just started to overclock my ram and I reset the timings back to stock after oc'ing my cpu. However when I started to run memtest it started showing a bunch of errors. So I tried increasing both the dram voltage and nb and lowering my timings back to where they were 5-5-5-15 but that still gave errors. However my ram is supposed to run at 4-4-4-12. Ram is 4gb Corsair XMS2 c4 and mobo is asus maximus formula. FSB@400 mhz. Any suggestions?