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**Lsdmeasap** · 10-13-2009, 05:20 AM

Re: Problem overclock Q6600 + EP45-DS3l

Yes, it may be possible to adjust things, but you need to find a stable point first, not just boot stable I mean testing with programs such as Memtest86+ or Orthos stable.. Once you get your CPU to a stable speed you want to keep then you can work on tightening up the memory

444-12 may not be an option with that much ram, you may be able to try 544-12 or 554-12 ect though, of course you can always try 444-12 but from the specs it may not work unless you pump 2.0-2.1V into them. Then maybe, not sure as I have not used any 4x4GB Sticks myself

**mcu** · 10-13-2009, 05:36 AM

Re: Problem overclock Q6600 + EP45-DS3l

At 3.4 Prime95 passed ok till 1 hour.

**mcu** · 10-13-2009, 06:48 AM

Re: Problem overclock Q6600 + EP45-DS3l

Current settings for 3.600
Running ok, os works, no bsods.
CPU Temp in idle 38-41

But when i starts 4 thread with 100% it hangs. BSOD 0x9C MACHINE CHECK ERROR
-------------------------------------------------
CPU: q6600 G0 06FB:0B6
EP45-DS3L BIOS ver. F11b

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 9
CPU Frequency ...........................: 3600

Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 400 Mhz
PCI Express Frequency (Mhz) .........: 100
C.I.A.2 .................................:[Disabled]

Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 800 mV
PCI Express Clock Drive.................: 800 mV
CPU Clock Skew (ps)....................: 0
MCH Clock Skew (ps)...................: 0

DRAM Performance Control
Performance Enhance...................: [STANDARD]
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 2.00D
Memory Frequency (Mhz) ..............: 800 800
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................12

Advanced Timing Control - ALL AuTO
tRRD...........................................
tWTR..........................................
tWR............................................
tRFC...........................................
tRTP...........................................
Command Rate (CMD) ....................:2

Motherboard Voltage Control

CPU
CPU Vcore….……….........................:1.475
CPU Termination…..... 1.200V*.......:1.300
CPU PLL…………………....1.500V*.......: 1.550

CPU Referen.…………....0.755V*.......: Auto
CPU Reference2………,,0.800V*.......:Auto

MCH/ICH
MCH Core…………….....1.100V...........: 1.34
MCH Reference….…….0.760V...........; Auto
MCH/DRAM Ref.…......0.900V...........: Auto
ICH I/O……………….....1.500V............: Auto
ICH Core…………...……1.100V............: Auto

DRAM
DRAM Voltage ……....1.800V............: 2.000
DRAM Termination .…0.900V............: Auto
Channel A Reference 0.900V............: Auto
Channel B Reference 0.900V............: Auto

Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Disabled]
CPU Enhanced Halt (C1E)................: [Enabled]
C2/C2E State Support....................: [Enabled]

CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Enabled] I', using vmware

Integrated Peripherals
Legacy USB Storage Detect ..............[Disabled]

**mcu** · 10-13-2009, 08:11 AM

Re: Problem overclock Q6600 + EP45-DS3l

8x433 works stable, 65C per core with full load.
Prime95 1 of 4 cores failed, but second time all ok.
8x450 still hang
9x400 still hang

**Chike** · 10-13-2009, 08:35 AM

Re: Problem overclock Q6600 + EP45-DS3l

I would go by the fail not the one that have not.
How long do you run prime, is it always the same worker that fail, which test do you run and what FFT size fail?

**mcu** · 10-13-2009, 11:55 AM

Re: Problem overclock Q6600 + EP45-DS3l

FFT 1000 on core 0 fails a
All other coress worked well till 2 hours on 433*8.
I do not want to increase vcore, but maybe some other adjustments will help.

Also, can better results be reached on other mb model?
What's mb will be beter for overclocking the q6600?

seems overclocked q6600 has the best ratio price/perfomance.

**Chike** · 10-13-2009, 12:20 PM

Re: Problem overclock Q6600 + EP45-DS3l

I think your memory will be holding you above 400FSB, FFT 1000 may be due to memory settings, run small FFT first for several hours to make sure it's not CPU settings.
Can't avoid raising vcore when it's needed, the only way I know to know for sure is running IBT, but your temps are pretty high and IBT may bring them near 80c or above.
Please post tour full current BIOS settings again.

**mcu** · 10-14-2009, 02:39 AM

Re: Problem overclock Q6600 + EP45-DS3l

Had bsod at 8*433 after 5 hours.

**Lsdmeasap** · 10-14-2009, 02:50 AM

Re: Problem overclock Q6600 + EP45-DS3l

With what settings? Please always post full settings when things fail, that way someone can try to look at things and make suggestions back to you.

May just need more Vtt or Vcore with it lasting 5 hours, sounds like you are getting there

**mcu** · 10-14-2009, 02:51 AM

Re: Problem overclock Q6600 + EP45-DS3l

Current settings for 3.600
Running ok, os works, PRIME or 4 threads with 100% cause bsod.
CPU Temp in idle 38-41
BSOD 0x9C MACHINE CHECK ERROR

Code:

CPU: q6600 G0 06FB:0B6
EP45-DS3L BIOS ver. F11b

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 9
CPU Frequency ...........................: 3600


Clock Chip Control 
Standard Clock Control
CPU Host Clock Control..................: [Enabled] 
CPU Host Frequency (Mhz) ............: 400 Mhz
PCI Express Frequency (Mhz) .........: 100
C.I.A.2 .................................:[Disabled]

Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 800 mV
PCI Express Clock Drive.................: 800 mV
CPU Clock Skew (ps)....................: 0
MCH Clock Skew (ps)...................: 0 


DRAM Performance Control
Performance Enhance...................: [STANDARD]
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 2.00D 
Memory Frequency (Mhz) ..............: 800 800
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................12

Advanced Timing Control - ALL AuTO
tRRD...........................................
tWTR..........................................
tWR............................................
tRFC...........................................
tRTP...........................................
Command Rate (CMD) ....................:2

Motherboard Voltage Control

CPU
CPU Vcore….……….........................:1.475
CPU Termination…..... 1.200V*.......:1.300
CPU PLL…………………....1.500V*.......: 1.550

CPU Referen.…………....0.755V*.......: Auto
CPU Reference2………,,0.800V*.......:Auto

MCH/ICH
MCH Core…………….....1.100V...........: 1.34
MCH Reference….…….0.760V...........; Auto
MCH/DRAM Ref.…......0.900V...........: Auto
ICH I/O……………….....1.500V............: Auto
ICH Core…………...……1.100V............: Auto

DRAM
DRAM Voltage ……....1.800V............: 2.000
DRAM Termination .…0.900V............: Auto
Channel A Reference 0.900V............: Auto
Channel B Reference 0.900V............: Auto

Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Disabled]
CPU Enhanced Halt (C1E)................: [Enabled]
C2/C2E State Support....................: [Enabled]

CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Enabled] I', using vmware

Integrated Peripherals
Legacy USB Storage Detect ..............[Disabled] 
__________________

**Lsdmeasap** · 10-14-2009, 04:24 AM

Re: Problem overclock Q6600 + EP45-DS3l

Can you please post a image of Memset with those settings so we can see what all those auto's are giving you >>
Tweakers.fr

Wow, that is some high MCH for 3.6, may not be needed and could be causing you issues as well. Did you try less? Just wondering, with that ram you may need it though but I doubt it unless the need is caused by the high FSB of a quad

**mcu** · 10-14-2009, 01:42 PM

Re: Problem overclock Q6600 + EP45-DS3l

Much RAM i need for big math calculation matrices, at about 6-8 gbytes size.

Got 3.4 stable with this params, 8x425, 14 hours 100% prime test passed,
Temp was =< 68C.

3.6 will be good too, but if it can damage i will leave to 3.4 back.

in memset timings with 9x400 the same, 5-5-5-15 with 2.0V

**Lsdmeasap** · 10-15-2009, 12:18 AM

Re: Problem overclock Q6600 + EP45-DS3l

Yes, but I would like to see the timings so I could advise.

So are you saying you had to raise MCH or it would error when doing a big problem? Are you sure it was not more Vtt or Vcore that you needed instead?

**mcu** · 10-15-2009, 03:17 AM

Re: Problem overclock Q6600 + EP45-DS3l

**mcu** · 10-15-2009, 03:23 AM

Re: Problem overclock Q6600 + EP45-DS3l

Without rised mch it doesn't boot.
now RAM Vcore is 2.0V MCH is 1.34V., CPU Vcore 1.475 all reference voltages is set to Auto.

It hangs only if heavy load.

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