Where to start.... I have an E6550 and of course it has 1333mhz FSB ASUS PK5-VM Kingston PC2-8500 DDR2 1066mhz (KHX8500D2K2/2GN) BIOS v. 0704 (latest for M/B) My question is...Is the memory bottlenecking the CPU or not ? If so, can I safely overclock it to 1333mhz with just the heatsinks that come with the memory and the 80mm & 120mm case fans ? Something else I will mention is that the M/B is supposed to support this memory @ 1066mhz 2.2v and Kinston says the same but when I put it in it was set to default of 800mhz 5-5-5-9 and I don't have 2.2v option in BIOS only AUTO~2.1v Currently I have, in BIOS, memory @ FSB 333(options 200-800) clock 1066mhz latency 5-5-5-15 AUTO voltage ASUS and Kingston disagree on website about supported "activate to precharge" value for 1066mhz 2.2v. One says 15 the other 18. So do I need to overclock for CPUs benefit and can I w/o melting down the memory or losing stability ? Hope it's clear enough.