Baraka_Guru

FSB is 800MHz, plus it can do 533 and 400, apparently.

Another update: I managed to get my Windows up and running again, but ONLY when I removed the new chip...

Cyrnel, you idea for switching positions of the chips is worth a try. Do motherboards have some priority settings towards socket 1 over socket 2? I'm not going to try reinstalling Windows again now that it works right this time, instead I'll just plug around with the chips for a bit. If I can't get the new chip to work, I will exchange it for a chip that matches my original chip's speed. I can get a generic brand name K-Byte for $75. Not as good as $50, but at least I won't have to muck around with a rebate form.

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Knowing that death is certain and that the time of death is uncertain, what's the most important thing?
—Bhikkhuni Pema Chödrön

Humankind cannot bear very much reality.
—From "Burnt Norton," Four Quartets (1936), T. S. Eliot