Hi guys, I'd appreciate some input on getting the Q6600 stable. I'm new to overclocking Intel, came from AMD64 X2 NF4.
Mobo is EP45-UD3 on latest F8 bios. Basically I got the Q6600 stable on 335x9, vcore 1.2v (1.168v CPU-Z) with standard voltage settings. I've kept the memory settings on auto all the time.
The above settings are proven stable. Just a couple of notches up though and I start getting failures in Prime95.
I've kept PLL and reference voltages on standard during testing. Changes were mostly done to Vcore, CPU Termination and MCH Core. I used http://www.xtremesystems.org/forums/...d.php?t=147164 as a guideline.Code:******Motherboard Intelligent Tweaker (M.I.T.)******
Robust Graphics Booster.........................[ Auto ]
CPU Clock Ratio.................................[ 9 ]
Fine CPU Clock Ratio............................[ + 0.0 ]
CPU Frequency 3.12GHz............................[ 347 x 9.0]
******Clock Chip Control******
CPU Host Clock Control..........................[ Enabled ]
CPU Host Frequency (Mhz)........................[ 347 ]
PCI Express Frequency (Mhz).....................[ 100 ]
C.I.A 2.........................................[ Disabled ]
******Advanced Clock Control******
CPU Clock Drive.................................[ 700mv ]
PCI Express Clock Drive.........................[ 700mv ]
CPU Clock Skew..................................[ 0ps ]
MCH Clock Skew..................................[ 0ps ]
******DRAM Performance Control******
Performance Enhance.............................[ Turbo ]
(G) MCH Frequency Latch.........................[ Auto ]
System Memory Multipler.........................[ Auto ]
Memory Frequency 800...........................[ 1041 ]
DRAM Timing Selectable..........................[ Auto ]
CAS Latency Time................................[ 4 ]
tRCD............................................[ 4 ]
tRP.............................................[ 4 ]
tRAS............................................[ 15 ]
******Motherboard Voltage Control******
Load-Line Calibration...........................[ Enabled ]
CPU Vcore [ 1.25 ]...................[ 1.23750 ]
CPU Termination [ 1.20 ]...................[ 1.20 ]
CPU PLL [ 1.50 ]...................[ 1.50 ]
CPU Reference [ 0.760 ]...................[ Auto ]
MCH Core [ 1.100 ]...................[ 1.200 ]
MCH Reference [ 0.760 ]...................[ Auto ]
MCH/DRAM Refernce [ 0.900 ]...................[ Auto ]
ICH I/O [ 1.500 ]...................[ 1.5 ]
ICH Core [ 1.100 ]...................[ 1.1 ]
DRAM Voltage [ 1.800 ]...................[ Auto ]
DRAM Termination [ 0.900 ]...................[ 0.910 ]
Channel A Ref [ 0.900 ]...................[ 0.910 ]
Channel B Ref [ 0.900 ]...................[ 0.910 ]
******Advanced BIOS Features******
Limit CPUID Max to 3............................[ Disabled ]
No-Execute memory Protect.......................[ Disabled ]
CPU Enhance Halt (CIE)..........................[ Disabled ]
C2/C2E State Support............................[ Disabled ]
C4/C4E State Support............................[ Disabled ]
CPU Thermal Monitor.............................[ Disabled ]
CPU EIST Function...............................[ Disabled ]
Virtualization Technology.......................[ Disabled ]
Here's what I've gone through so far during testing:
Run 1 - VCore
Increasing Vcore, the rest stock.
DRAM 1.8v
ICH 1.1v
MCH core 1.1v
Termination 1.2v
Prime95:
Vcore 1.20v core 3 fail ~ 3 min
core 2 fail ~ 6 min
Vcore 1.2125 core 0 fail ~ 2 min
core 1 fail ~ 5 min
core 3 fail ~ 6 min
Vcore 1.2250 core 2 fail ~ 7 min
core 1 fail ~ 8 min
Vcore 1.2375 core 0 fail ~ 2 min
core 2 fail ~ 4 min
My conclusion: No benefits from increasing Vcore
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Run 2 - MCH Core
Increasing MCH Core, stock voltages except Vcore
DRAM 1.8v
ICH Core 1.1v
Termination 1.2v
Vcore 1.2375
Prime95
MCH 1,16 core 3 fail ~ 6 min
MCH 1,20 core 0 fail ~ 19 min
MCH 1,22 core 1 fail ~ 2 min
core 3 fail ~ 3 min
Possible 1.2v ''sweet spot''?
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Run 3 - CPU Termination
Increasing CPU Termination, lowered MCH back to 1.2v (best result on previous run)
DRAM 1.8v
ICH Core 1.1v
MCH Core 1.20v
Vcore 1.2375v
Prime95
VTT 1.22v core 2 fail ~ 3 min
VTT 1.24v core 2 fail ~ 1 min
My conclusion: Possibly no benefits from increasing CPU Termination now
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Run 4 - Vcore again
DRAM 1.8v
ICH Core 1.1v
MCH Core 1.2v
Termination 1.2v
Vcore 1.2375v core 0 fail ~ 2 min
core 3 fail ~ 2 min
Vcore 1.30v core 3 fail ~ 3 min
Conclusion: Again no benefit from increasing Vcore, Vcore 1.2375 run here had same settings as MCH Core 1.2v run in Run 2, but significantly shorter despite that. (19 minutes vs 2 minutes)
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So I'm pretty much running out of ideas, unless you guys can point me a little in the right direction, such as playing with PLL and Reference voltages. Also, is it okay to leave memory timings and divider on auto for now?
