Ryszard has written an article with such a detailed title that it won't fit in the VBulletin subject field, so here's title and quote in all its glory:
Memory Shootout - Extremely High Performance DDR using Samsung TCCD DRAMs on Socket 939 AMD64http://www.hexus.net/content/reviews...lld19JRD0xMDEwTo sum up, if you want the coolest modules on the block and you're feeling flush, the Corsair Xpert is in a niche of its own. Paired with Samsung's TCCD modules, there's a world of performance to be had from them at modest Vdimm. Otherwise, the G.Skill and OCZ both come recommended at around the £200 mark, with Corsair's XL PRO and XL PT under that price, too.