F2-8500CL5D-4GBPK x2

[Tradesman]

For that, try a Clear CMOS, then set the FSB to 333 (=1333) and leave the DRAM freq at 1066 for now

[XKrIpTa]

DRAM at 2.15 and vCore 1.33 gives me blue screen

we can try any cofig for DDR2 800, or FSB at 333

[Tradesman]

Try DRAM 2.15 and vCore 1.33

[XKrIpTa]

I run memtest86+ during 10 hours with the following values.

FSB: [400]
vCore: [1,32500]
NB: [1,49]
DDR2 Chnl A Ref V: [DDR2_REF]
DDR2 Chnl B Ref V: [DDR2_REF]
DDR2 Controller Ref V: [DDR2_REF]

During this time (7 Passes), memtest found only 4 erros, 2 during Pass 1, and 2 during Pass 5, all in Test #5 [Block Move 80]

we are so close ...

[Tradesman]

NB Voltage show at Autio, try raising 0.05 or a tad bit more, might also raise vCore, shows at Auto, which may be a bit low if the FSB is at 400....try the CPU voltage (vCore) about 1.32

[XKrIpTa]

Current Values:

Ai Overclock Tuner [Manual]
CPU Ratio Settings [Auto]
FSB Frequency [400]
FSB Strap to North Bridge [400Mhz]
PCIE Frequency [100]

DRAM Frequency [DDR2-800Mhz]
DRAM Command Rate [2T]
DRAM Timing Control [Auto]
Primary Info: 5-5-5-15-3-52-6-3
Secondary Info: 8-3-5-4-6-4-6
DRAM Static Read Control [Disabled]
Ai Clock Twister [Moderate]
Transaction Booster [Disabled]
Relax Level [7]

CPU Voltage [Auto]
CPU PLL Voltage [Auto]
North Bridge Voltage [Auto]
DRAM Voltage [2.10v]
FSB Termination Voltage [Auto]
South Bridge Voltage [Auto]
Loadline Calibration [Auto]
CPU GTL Reference [Auto]
CPU GTL Reference [Auto]
North Bridge GTL Reference [Auto]
DDR2 Channel A REF Voltage [Auto]
DDR2 Channel B REF Voltage [Auto]
DDR2 Controller REF Voltage [DDR2_REF]
SB 1.5V Voltage [Auto]

CPU Spread Spectrum [Disabled]
PCIE Spread Spectrum [Disabled]

[Tradesman]

Try raising DRAM voltage + 0.05, also raise NB voltage about same and what OC are you running the CPU at, the vCore may be low

[XKrIpTa]

Hi everyone,

I have 2 kits F2-8500CL5D-4GBPK (8GB in total)
Motherboard -> Asus Maximus Formula [Intel® X38/ICH9R] (1403 latest bios)
CPU - > Q9550 (E0)
GPU - > AMD HD6950 2GB

I've never be able to make work properly 4 modules, causing app crash , I test each module with memtest without any error reports.

Thanks.