I have just built a new system with the GA-EP45-UD3R.
I bought this memory http://www.newegg.com/Product/Product.aspx?Item=N82E168... .
I don't care to do any major over clocking but I do want to run
my system a little faster than stock, if that makes any sense.
I am sure I could have gotten memory since the timings don't seem to be too tight.
The motherboard was a little touchy with the memory I bought. I had to clear the CMOS and start with one stick but it is all good now.
I have yet to install the OS (Vista 64).
Just my luck, right after I bought this memory a bunch of other G.Skill memory (better gaming quality) went on sale for around the same price.
Anyway the 1066 memory price is getting right so I didn't see any need to get 800.
I'd stick with mushkin or G.Skill; have seen too many lengthy 'have been trying to make it work for twenty posts' conversations about Corsair and Patriot - especially Corsair, which also seems to be prone to 'degrading' over time, i.e., a working BIOS setting just stops working one day, and the solution turns out to be further loosening of the memory latencies...