Insane...
My Annihilator 2 would lock with any oc playing UT, MCM2, etc....Voodoo 5500 did it too before I returned it...Have pulled CPU out lots of times...but never was too interested in what core I had. One day I decided to look, and did notice that big gap between the cache and the heatsink, so I did a nice job of cleaning the chips, and put enough thermal compound in there to fill the gap. Now I can play just about anything oced with no lockups. Usually run around 220 core, and 360 mem. Was like night and day. Must not have been video card after all! I use the latest Fast Trak drivers...and I/O is at default(3.30).
As for bus OC....took my GF off and ran 750 at host clock...could only do 114 FSB..855 mghtz. stable.
Sorry it took so long for reply...hope u read this!
Later
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Athlon 750 @ 928, 2/5 L2, 1.85 volts
ABIT KA7
128 mg Infineon PC133, 128 mg Mushkin PC133 rev. 2
Ninja Micros Goldfinger
GlobalWin FKK32 Heatsink/Fans
Creative Annihilator 2
SB Live! x-Gamer/MS Digital Sound System
2 10 gig HD
HP 8x4x32 Burner
48x CD
Kingston Nic
WireSpeed DSL Modem