corsair is the absolute best memory that money can buy man. like that cat above me said... if u r'nt overclocking then there is no need to get the xms series or the xms professional series. latencies are really ****ing overrated. there is really no noticable difference between like 2.5-3-3-8 and 2-3-2-6. latencies will show effect on memory specific benchmarks and thangs... but that is it. i would highly recommend getting some valueram with decently low latencies. something like 3-3-3-12 just stinks because when the latencies are that high it is just bottlenecking the transfer rate. check it man.