** Official ** Gigabyte UD3 P45 Series -- EP45-UD3 / EP45-UD3R / EP45-UD3P

[Shiranui Gen-An]

wich is the best (stable) strap for 500 over fsb?

I'd say 333 strap. On an unrelated note, it seems the UD3P by default uses very loose subtimings on the RAM to achieve the high clocks...