I know, I did the same as you. Check my specs. Your i860 chip is rated by Intel at 1066/1333 and you hav 1600 ram. In my case and maybe yours XMP put the setting even faster and Bingo BSOD. No two chips are the same but with proper cooling you could problably run the ram at 1600 if you set things manualy. Your memory controler is built into the cpu if I remember correctly so watch your cpu temps.