F2-8500cl5d-4gbpk @ dfi dk p45-t2rs

[Fisker]

I'm having problems with running those RAMs on my mobo (RAM are on DFI list, DFI is on G.SKILL list), they don't want to run on stock settings 1066/5-5-5-15/2.1V, SPD starts them with 800/5-5-5-15 and sticks works fine, but when i set 266/1066 mobo gives C1 error. Settings I've tried:

RAM V - 2.1V
266/1066 (E7500 11x266)
NB V - 1.32V
CPU VTT - 1.21V
5-5-5-15 tRFC 54

I've found half-stable settings that are:

RAM V - 2.22V
333/1066 (E7500 10x333)
NB V - 1.32V
CPU VTT - 1.23V
5-5-5-15 tRFC 54

But I'm not satisfied since RAM needs much more voltage than promised 2.0-2.1V and it's half stable cause sometimes mobo doesn't want to boot showing C1 error.

C2D E7500 11x266
Tagan U15 480W
DFI DK P45-T2RS BIOS 14.09.2009 (latest)

I think it's mobos fault, seems to hate 266/1066 and 333/1066 settings :/

[GSKILL TECH]

Why is your NB Voltage so high? That may be the problem...

Thank you
GSKILL TECH

[Fisker]

G.SKILL e-mail support advised to set it to 1.4V

Anyways I switched ram to OCZ Reaper and they works much better on this board.

[GSKILL TECH]

Only if you are using 4 sticks.

Thank you
GSKILL TECH