I got some very good OCZ Gold sticks PC3-8500....got em from Amazon for like $43 or something January '09. They run 1600 7-7-7-19-11-1T 5,7,5,5 1.75vdimm or 1333 6-6-6-17-11-1T 4,5,4,4 1.7vdimm. Truly bang for the buck. Crazy how my G. Skills cost 3 times as much, at less performance (eBay e-bucks burning a hole, had to use em before they expired). The 790XT-UD4P can't even go lower than 1.6vdimm, when the Ecos supposedly run @ 1.35vdimm, bah.