Just bought a Gigabyte GA-EP45-UD3P to replace my older DFI. I'm running my X3360 (xeon version of the q9550) @ a modest 8.5x400 and am looking for some suggestions as to settings as I minimize my voltages. 1) What is a reasonable MCH Core for this board running @ 400 MHz? I tested 1.30 V for several hours of p95 and have now backed off to 1.26 V which also seems stable. Please post your settings if you're running a quad. 2) What is the accepted amount of GTL to apply to the CPU and MB for 400 MHz? I'm currently doing .67x and .67x. The MB seems to default to 0.63x for the CPU and 0.69x for the MCH. Thanks
Unfortunately, I'm already on the Core i7. I think Dashken's using a Core 2 quad core processor, but I think it's a Q6600 or something like that.
Just completed a p95 run for 20 h using the following settings in case anyone is interested. X3360 CPU by the way using 4x2 Gb of Corsair CM2X2048-8500C5D: Code: Robust Graphics Booster.........................[ Turbo ] CPU Clock Ratio.................................[ 8.0 ] Fine CPU Clock Ratio............................[ +0.5 ] CPU Frequency 4.25GHz...........................[ 400x8.5 ] ******Clock Chip Control****** CPU Host Clock Control..........................[ Enabled ] CPU Host Frequency (Mhz)........................[ 400 ] PCI Express Frequency (Mhz).....................[ 100 ] C.I.A 2.........................................[ Disabled ] ******Advanced Clock Control****** CPU Clock Drive.................................[ 800mV ] PCI Express Clock Drive.........................[ 900mV ] CPU Clock Skew..................................[ 0ps ] MCH Clock Skew..................................[ 0ps ] ******DRAM Performance Control****** Performance Enhance............................ [ Extreme] Extreme Memory Profile (XMP)....................[Profile2] (G) MCH Frequency Latch.........................[ 266MHz ] System Memory Multipler.........................[ 2.50A ] Memory Frequency 1066...........................[ 1000MHz] DRAM Timing Selectable..........................[ Manual ] CAS Latency Time................................[ 5 ] tRCD............................................[ 5 ] tRP.............................................[ 5 ] tRAS............................................[ 15 ] ******Advanced Timing Control****** tRRD............................................[ 4 ] tWTR............................................[ 4 ] tWR.............................................[ 8 ] tRFC............................................[ 68 ] tRTP............................................[ 4 ] Command Rate (cmd)..............................[ 2 ] ******Channel A and B Timing Settings****** Static tRead Value [ 0 ] ................[ 8 ] tRD Phase0 Adjustment [ 0 ] ................[ Auto ] tRD Phase1 Adjustment [ 0 ] ................[ Auto ] tRD Phase2 Adjustment [ 0 ] ................[ Auto ] tRD Phase3 Adjustment [ 0 ] ................[ Auto ] tRD 2rd (Differnt Rank) [ 0 ] ................[ 8 ] tWR 2wr (Differnt Rank) [ 0 ] ................[ Auto ] tWR 2rd (Differnt Rank) [ 0 ] ................[ Auto ] tRD 2wr (Same/Difft Rank) [ 0 ] ................[ Auto ] Dimm 1 Clock Skew Control.......................[ Auto ] Dimm 2 Clock Skew Control.......................[ Auto ] DDR Write Training..............................[ Auto ] ******Channel A and B Driving Settings****** Drive Strength Profile..........................[ 1066MHz ] Data Driving Pull Up Level......................[ Auto ] cmd Driving Pull Up Level.......................[ Auto ] ctrl Driving Pull Up Level......................[ Auto ] clk Driving Pull Up Level.......................[ Auto ] Data Driving Pull Down Level....................[ Auto ] cmd Driving Pull Down Level.....................[ Auto ] ctrl Driving Pull Down Level....................[ Auto ] clk Driving Pull Down Level.....................[ Auto ] ******Motherboard Voltage Control****** Load-Line Calibration...........................[Enabled ] CPU Vcore [ 1.25000 ]...................[ 1.1625V] CPU Termination [ 1.20 ]...................[ 1.300V ] CPU PLL [ 1.50 ]...................[ 1.500V ] CPU Reference [ 0.760 ]...................[ 0.823V ] MCH Core [1.100 ]...................[ 1.240V ] MCH Reference [0.760 ]...................[ 0.863V ] MCH/DRAM Refernce [0.900 ]...................[ 0.900V ] ICH I/O [1.500 ]...................[ 1.500V ] ICH Core [1.100 ]...................[ 1.100V ] DRAM Voltage [1.800 ]...................[ 2.100V ] DRAM Termination [0.900 ]...................[ 0.900V ] Channel A Ref [0.900 ]...................[ 0.900V ] Channel B Ref [0.900 ]...................[ 0.900V ]
I don't think you need to increase MCH core unless you are really stressing the Northbridge. 400MHz is a piece of cake for P35/45. 400x8.5 is not 4.25GHz. I'm personally running stock voltage at 425MHz.
