PC2-6400 800MHz DDR2 Ultra Dual Channel Kit SKU: GX21GB6400UDC / GX22GB6400UDC PC2-6400 DDR2-800MHz CAS 4-4-4-12 1.8v ~ 2.3v
Those in bold aren't Micron D9. They don't overclock at all, at rated voltage/timings/freq they run hot like deepest deep of hell and don't even post on some motherboards.
Be warned, they are not D9. Mine are week 27, I heard that some have had D9 but don't know in which week they switched. Also GX22GB6400UDC Plus are D9, from what I know.