On my old computer I jumped the memory from 128 megs to 512 megs and didn't get any increase in speed. But when I added a faster drive I got a big jump in speed. I really believe in drive speed. Now am going to buy a new computer from my white box man. He offers EISA 10,000 rpm drive; Ultra ATA 7200 rpm drive; SATA-100 7200 rpm drive. My guess is that the EISA 10K would be fastest. Am I correct?