well my motherboards box lol says it can have like 6.4GB memory bandwidth so as soon as i have my memory up with the voltage and i can run it over pc4000 maybe like ddr550 with the lowest timmings possible at that speed im sure i my system will be moving it least 5.5gb
When it says 6.4gb it's talking about PC3200 in dual channel....and trust me it's nowhere even close to 6.4gb like they say.....in reality it's like....3.4gb/sec bandwidth....use sisoftware sandra or everest and it'll show you that.
Even with DDR550 you won't be hitting 5.5gb..
DDR500 - 250MHz - 2.5-3-3-8-1T 2.9v @ 3779/3495
I keep a record of all my benches from memory benches, to 3dmark01, 03, 05, and aquamark across both my XP-M, my AMD64 in my nf3 board and my AMD64 in my NF4 board.
So at DDR550 you can probably expect to get MAYBE 4gb/sec
That's on my XP-M system, CPU running at 2.5GHz
EDIT: forgot though, if you're running BH-5 sticks with lots of voltage and hoping for DDR550 using something like 2-2-2-5 timings then over 4gb is a definite, but still not quite 5.5