Hello. I am having problems getting my Gigabyte DS5 stable when I OC the ram.
First of all it wont OC the ram to 1100 (3.00 divider) without altering the FSB Voltage. Ive had to put the Fsb Overvolt setting to +0.20 to pass memtest. So it works fine at 1100 ram 3300 cpu.
But when I tried to further OC the ram using the divider set to 3.20, OC'ing the ram to 1174 ... My GPU had disabled itself somehow when I booted into windows. When I looked in Device manager it was still there but there was no information about the GPU connected. And it wouldnt enable properly when I disconnected and reconnected the GPU and tried reinstalling the driver.
Ive only managed to get the GPU to work properly again by resetting the ram divider to the stable 3.00/1100 setting.
The problem seems to lie somewhere in the voltage settings for the PCIE or FSB, im guessing.
Does anyone here have any idea what a few of the other settings on this board are for and how they alter the boards performance. (G) MCH overvoltage control is the one I am most clueless about ... Ive set it to +0.050 just to see if this would maybe solve the problem.
My Bios Voltages and settings look like this right now.
PCI freq - 100mhz
C.I.A.2 - disabled
Performance enhance -standard
Multiplier - 3.00a
Mem freq - 1100
mem settings 5,5,5,5,15
CPU/PCIEX clock driving control - 800mv (Im wondering if this might need another setting)
Cpu clock Skew control - normal
(G) MCH clock skew control - normal
ddr2 volts +0.40 (2.2)
PCI-E Overvoltage control - +0.10v
FSB Overvoltage control - +0.20v
(G) MCH Overvoltage control - +0.050
MCH Reference control voltage - normal
DDR Reference voltage control - +10%
DDR termination voltage - normal
Loadline calibration -enabled
CPU Volts - 1.35v
Can anyone give me clue to where the problem might lie ? voltage settings causing my GPU to become unstable like it is ?
Im on XP 32, Q6600, G.Skill 8500 2gb, 9800GTX - without OC right now.
Id be grateful if any genius out there has a clue whats happening. Thanks.