Thank you, Zodac The best the BIOS is known to support is the E6300, one of the stock configs. I wonder if Dell locks the CPU microcode tables as harshly as HP does...
And your motherboard has that crazy form factor BTX should be outlawed, IMO. It's just another moneygrabbing scheme for businesses. Almost like Dell's "custom" PSU scandal, where they used the normal 24pin ATX connector, but had the pinout all different.
But this baby got me Folding... I can't just trade her in.