I don't beleive it's the Catalyst driver version, in fact I'm getting better results with the 3.2 version.
The problem is the high FSB speed your running. Sounds like your running a TBred-B 2400+ slightly overclocked, and possibly wanted to improve your video performance by rasiing the FSB, and lowering the multiplier to compensate, as to not raise the processor FSB clock too high. Anyway, not knowing what type of motherboard you have, makes it difficult to offer any specific help. I would
reinstall the Cat 3.2 drivers, and simply try raising your FSB albeit in smalle increments.
Try 12x190, and reduce the memory timings to a slightly less aggressive settings. Also raise the
Vcore slightly,
if your at, or just above your deafult processor clock speed, then don't go too much higher then 1.675V to 1.75V. Not knowing what sort of memory your running is also makes it difficult to dispense advise.
Another solution would be to lower the mutliplier to 10x200,
raise the VDIMM (voltage to the DDR) slightly above default which I assume is
2.5V, perhaps rasing it to
2.63V (or similiar) maybe even
2.7V, 2,8V depending on what type of memory your running. Remember 200FSB is 400MHz DDR which is PC3200, or DDR400. So
if your running PC2700/DDR333 your going to have to raise the DDR voltage even higher, but no higher then 2.9V to be safe. If your using an nForce2 chipset many struggle at 200FSB, and the memory, timings have to be just right. If your are using an nForce2 chipset, make sure the following BIOS conditions are met; "
CPU Interface - Aggressive", "
Memory Frequency - 100% or Sync", "
Memory Timmings - Optimal", "
FSB and AGP Spread Spectrum - Disabled" and "
AGP Frequency - 66MHz" not
AUTO. Let us know what happens. Remember baby steps. Next time try only making ONE adjustment at a time, to eliminate the number of variables. Of course in this case, your going to want to raise
VCore, and
VDIMM (voltages) concurrently with the high FSB speeds your attempting. IF you don't have an nForce2 chipset, then don't do anything, because my advice would be different for different chipsets. Basically if your chipset doesn't allow adjustment of the AGP bus, then the reason your system is stable at 166FSB is because of the 5:2:1 divider, which is keeping it at default speeds, in that case you may only be able to attain 185-190FSB at the highest. The Nforce2 however locks the PCI bus, so you don't have to worry about that, but you do have to adjust the AGP Frequency manually, and 66MHz is the default AGP bus speed.