I have for a long time now, a Asus P2BD motherboard with 2 PII 350 on it. After googling a bit, I discover that I can put 2 Katmai PIII at 600Mhz on this board.
I have been looking at eBay for a while, I bought a pair of matched CPUs. Today, I received them. After a bios upgrade, I put the CPU “as is” on the motherboard. In fact, my motherboard haven’t the x 6 jumper settings.. but despite the jumpers settings are totally wrong, the CPUs work at 600Mhz.
Yes, I get 1200 BogoMips for 42 Euros :)
Thanks eBay ! and this faq !