I've built a few systems this week and benchmarked all of them with RC5/OGR:
1. single AMD 1.2ghz 266fsb [Retail + Retail HSF] CPU (41c/idle), ASUS A7M266 Motherboard (27c idle), 524meg ddr 266fsb generic nanya chips, OS: Win98SE, DX7
Result: 4,254,956 keys/sec 8,643,327 nodes/sec...