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

[RAMMAN]

possibly - i had instability on the ud3l f4 bios and flashed to f7 and all problems solved - boots at 471 and 500 everytime - whereas before it would set it's OWN memory speed on me for some reason - can't check right now, but i think the strap i set was 333 and memory 1:1 at 942 with 5-5-5-18 timings
at 471 the MCH only needs (on this one) 1.30 and at 500 it seems to need 1.38 - and still it seems to stay cool - although, despite all these UD3 board's strengths i gotta admit a NB sensor would have been nice...

lets hope they include that in the P55 UD3L/UD3R

that explains a lot, the bios acts very weird, wont boot at 400 fsb and wont boot with memory divider higher than 4:5 even at 333 fsb, so all overclocking has to be done in windows

edit: i thought i would try something, so i set the bios back to optimized defaults, goes into endless boot loop. i figure my ram doesnt like 1.9v so i replaced it with my team xtreem 1300s which in the past i couldnt for the life of me get it to work past ddr2-950. it booted just fine.

so i tried 2:3 divider 2.2 vdimm 1.2 mch all other voltages normal and to my surprise it booted! on all other sets of ram that divider was unbootable. on the next reboot i disable c1e, tm2, eist and virtualisation and it goes into another boot loop wtf? i switch it off, turn it back on boots just fine even though it didnt reset bios settings, i go enable virtualisation another boot loop. switch it off, turn back on boots i change multi to 8 boots just fine.

i have been upping fsb in windows and so far ddr2-1155 5-5-5-15 2.2v is stable, will try higher shortly.