I used Samsung PC2700 CTL Week4 for this purpose. Before I voltmodded my VDimm to get 3,1Volts. After that I have been able to do 196MHz Cl2,0-2-5-3-1TCmd with Driving @ Lo (was important for me!). Then after long burn in sessions I did reach my sweet spot at 200 2,0-2-5-3-1T-Lo or 194 2,0-2-5-2-1T-Lo

Try upping the voltage for ur ram, using only the highpoint for ur hdds (my maxtors were limiting first time so I upgraded to ibm avva) and try to cool ur sb live chip well going such a high pci clock.

BTW there's the possibilty that the infineon likes a special ram slot, my samsung liked 2 and 4 best.

Good luck

SAE