I put this PC together and it can run SuperPi just fine, but attempting to run a SECOND instance of SuperPi causes an error ("NOT CONVERGENT IN SQR05"). Any ideas? I haven't even tried to overclock yet. Upgrading to BIOS 0804 didn't seem to help.
Core2Duo E6600 ASUS P5B Deluxe 2 x 1 GB OCZ DDR2-800 (PC6400) 4-4-4-12 Antec 900 case Antec Phantom 500 power supply 2 x Seagate 400 GB SATA/2 HD's Samsung DVD combo drive Floppy disk
Edit: I'm also using Thermaltake Big Typhoon. My temps around 30-32 typically.
More aboute6600 unstable stock speed
Sound like Vdimm .. Try to increase vdimm by one notch ...
yes, memory timings might be not well set up or Vdimm may not be enogh for them