The reason I ask is because I used some as2 in my current setup, the 1700+ @2.2ghz 1.85v, and it works fine. Today, a friend from downstairs asked me to test out his new cpu, so I removed my slk-800 and stuck in his cpu. I tested it out and then I put my cpu back in, and it would restart just before it loaded windows. To get it to work, I had to bump it up to around 1.95v-2v for it to boot up into windows. So I'm thinking what the heck? I didn't change anything. I did remember that the as2 did seem a little spotty on the heatsink and cpu, but I didn't think that would have made that big a difference, but I thought what the heck so I reapplied the as2 and put everything back together, and voila, back at my current speeds.