About a month ago, I benched a S478 3GHz Prescott with old mighty Mushkin Level 2 bh5 being harassed @ ~3.6V ... Then I booted my other system with P5K Deluxe and a borrowed E8400 ... I used a Kingston PC2-8500 Hyper-X kit, that according to his last user, was equipped with GKXs ... Unfortunately I was all warmed-up from old good bh5 Mushkins at high voltage, so the max I fed them was 2.6V (fully moded mobo) ... DEAD I'll try that method and get back to you with an answer