What's more important-I guess it doesn't really what brand of memory- PC4200 with timings of 3-4-4-8 or PC3500 with timings of 2.5-3-3-7. I'm looking at some PMI turbo memory and the price is around $20 difference for both types. Also looking at Mushkin PC3500 2-3-3 for $158.. What's your opinions???