You're talking AMD here. For now, all TBird's still run on 100MHz DDR FSB (yeah I know, there are already 133MHz versions but then we're talking about 1.2GHz+ cpu's). The 750 MHz Tb is configured 7.5*100, this means you could use PC100. But it's better to buy PC133, so you can take advantage of the HClk+PCIClk (which is 100+33 = 133MHz) option of the kt133 chipset.
Conclusion : if you already have PC100 memory, you can use it, if not , buy PC133 memory (It costs almost the same price)and it makes a difference in speed!!!
:cool: Visit me at <A HREF="http://casemod.tripod.com" target="_new">http://casemod.tripod.com</A> :cool: