RAM performance scaling on LGA1366 is totally different. Ignore the link.
Now personally I find on AM3 plaform that the performance (bandwidth to latency) sweet spot is at 1600Mhz, regardless of timings. Any lower will have a significantly lower bandwidth (even DDR2 sometimes), while any higher does not have too much of a benefit. Most generic 1333 @ 9-9-9 or 1066 @ 7-7-7 will hold back bus clock OCs due to inability to OC (due to low binning due to generic standard). RAM bandwidth benefit is somewhat more visible on the AM3 platform, however it depends on the circumstances. If you run RAM-intensive and bandwidth-intensive apps such as video editing, you will see quite a benefit. If you run an SSD or other form of storage that requires increased communication through RAM, again you will see benefit. Gaming will also see an improvement of more than a couple FPS but nothing totally out of the ordinary. Gaming prefers lower timings on pretty much all platforms.Edited by xd_1771 - 7/31/11 at 2:25pm