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Q6700 3GHz+ problem

post #1 of 7
Thread Starter 
I know it's an old machine but I've finally decided to make faster. I haven't overclocked a machine since my old P4 since I didn't have the cash to replace my current one but now I have a little more freedom so I wanted to learn it again. I been reading quite a bit but after trying a couple of different approaches I haven't been able to change much.

Currently running stable at 3Ghz but I know I can probably do more.

I've looked through and saw a lot of people have oc higher than this, obviously with different systems but I'm pretty sure I can get above 3 and still be stable.

Cooling for CPU is not stock and can easily handle some more oc. Also the machine has case fans to spare.

Current Machine:
Mobo: Asus P5KC
CPU: Q6700
RAM: Mushkin DDR3 1333Mhz (#996770 just for more info)
Video Card: EVGA GTX 460 (main reason I started all this)
OS: Windows 7

Here is my current bios settings:

Ai Overclock Tuner = MANUAL
CPU Ratio Setting: = 9.0 // Q6700 can do 10x
FSB strap to northbridge = 400MHz // with my FSB at 333 I think this would be useless but FSB NB at 333 is unstable
FSB Frequency: 333
PCI-E Frequency = auto // I think I should change this but I haven't looked into it yet
DRAM Frequency = DDR3 1333Mhz // right on the dot with out oc
DRAM Command Rate = auto // Tried both 1N and 2N but prove useless

DRAM TIMING CONTROL: Manual
Timing info = 9 -9-9-24 // Anything else causes instability (I've read some people using 7-7-7-20)
DRAM Static Read Control = Auto
DRAM Dynamic write control = Auto
Adjust CHA SKEW Support = Auto
Adjust CHB SKEW Support = Auto

Transaction Booster = Auto

CPU Voltage = 1.4000
CPU PLL Voltage = Auto
FSB Termination Voltage = Auto
DRAM Voltage = 1.50V // Tried increasing it for ocing mem but had no effect (didn't pass 1.7)
NB Voltage = Auto
Clock over-charging voltage = Auto
load line collaboration = Auto
CPU GTL Vol Ref = 0.59x
NB GTL Vol Ref = 0.61x

CPU SPREAD SPEC = Enabled // Disabling this causes instability
PCI-E SPREAD Spectrum = Enabled // Haven't tried ocing but I'm just waiting till CPU is done

CIE Support = Enabled
Max CPU ID value limit = Disabled
Vanderpool Technology = Enabled
CPU + M Function = Enabled
Execute Disable Bit = Enabled

Thank you and any help is appreciated.
post #2 of 7
The instabilities you speak of, if they are linked to the memory they could probably be cured by one of these things:
*lower RAM speed; DDR 1333 may not be necessary as a FSB 333 has the same bandwidth as a single channel DDR @1333; you have double channel which certainly helps, so maybe 2x1333 isn't needed.
*increase RAM voltage (coupled with the things below)
*increase NB voltage
*increase NB cooling
*if the revision of your CPU is B3 in stead of G0 you may need to pump up quite a bit more voltage; even some G0s need more than 1.4V
*do you have an option to cancel Vdroop? If you don't have it monitor with CPUz what is the real Vcore in windows while load testing; if you don't know what that is click here for some info; that 1.4V in the bios could translate to 1.35V in Win under load, too little for 3.3+GHz

Cheers

P.S. A 3GHz quad w/ DDR3 & GTX 460 isn't a bad rig at all. It could play most games @1080p with at least medium/high details.
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Centurion
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post #3 of 7
Quote:
Originally Posted by dragosmp View Post
The instabilities you speak of, if they are linked to the memory they could probably be cured by one of these things:
*lower RAM speed; DDR 1333 may not be necessary as a FSB 333 has the same bandwidth as a single channel DDR @1333; you have double channel which certainly helps, so maybe 2x1333 isn't needed.
*increase RAM voltage (coupled with the things below)
*increase NB voltage
*increase NB cooling

*if the revision of your CPU is B3 in stead of G0 you may need to pump up quite a bit more voltage; even some G0s need more than 1.4V
*do you have an option to cancel Vdroop? If you don't have it monitor with CPUz what is the real Vcore in windows while load testing; if you don't know what that is click here for some info; that 1.4V in the bios could translate to 1.35V in Win under load, too little for 3.3+GHz

Cheers

P.S. A 3GHz quad w/ DDR3 & GTX 460 isn't a bad rig at all. It could play most games @1080p with at least medium/high details.
this and..


CPU Voltage = 1.4000 <--- prime95
CPU PLL Voltage = Auto .. add 0.06 up to 0.1 more..
FSB Termination Voltage = Auto .. this can work
DRAM Voltage = 1.50V // Tried increasing it for ocing mem but had no effect (didn't pass 1.7)
NB Voltage = Auto ..more prime95 again to find out..
Clock over-charging voltage = Auto
load line collaboration = Auto -- OFF
CPU GTL Vol Ref = 0.59x ..what are the other options here?!
NB GTL Vol Ref = 0.61x "............................................? !"

CPU SPREAD SPEC = Enabled // Disabling this causes instability
PCI-E SPREAD Spectrum = Enabled // Haven't tried ocing but I'm just waiting till CPU is done

CIE Support = Enabled
Max CPU ID value limit = Disabled
Vanderpool Technology = Enabled
CPU + M Function = Enabled
Execute Disable Bit = Enabled
Edited by smex - 3/10/11 at 6:39am
post #4 of 7
Thread Starter 
Thanks for the help,

I'll check some of this setting and also reply to questions when I get back later today.

Posted this before I went to bed last night.
post #5 of 7
Honestly, you should be able to get 3Ghz at stock vCore, just by upping FSB alone. I didn't have to mess with anything else til around 3.2-3.4Ghz. I can't really remember. I think it was closer to 3.4Ghz though.

I know nothing about your Mobo though. Maybe it doesn't OC as well, but even 3.4Ghz on a Q6700 is mild.

I also run a 9x multiplier. I am fine for how I use my PC at 411x9, but I can't get stable at 415x9. It just get so vCore hungry around 3.6Ghz. I think i'm at 1.45vcore at 3.7Ghz. I even tried 1.48v at 3.75Ghz and it would BSOD during Prime with error 0.000000124, which i guess is a vcore related error.
Edited by Blacklac - 3/10/11 at 10:07am
    
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post #6 of 7
Here's what I'd try:

Ai Overclock Tuner = MANUAL
CPU Ratio Setting: = 9.0
FSB strap to northbridge = Auto Changing this shouldn't cause instability at only 3Ghz.
FSB Frequency = 333
PCI-E Frequency = 100
DRAM Frequency = DDR3 1333Mhz // right on the dot with out oc
DRAM Command Rate = auto // Tried both 1N and 2N but prove useless

DRAM TIMING CONTROL: Manual
Timing info = 9 -9-9-24 // Anything else causes instability (I've read some people using 7-7-7-20)
DRAM Static Read Control = Auto
DRAM Dynamic write control = Auto
Adjust CHA SKEW Support = Auto
Adjust CHB SKEW Support = Auto

Transaction Booster = Auto

CPU Voltage = 1.3-1.32 should be PLENTY for 3Ghz.
CPU PLL Voltage = Auto
FSB Termination Voltage = Auto
DRAM Voltage = 1.50V // Tried increasing it for ocing mem but had no effect (didn't pass 1.7)
NB Voltage = Auto
Clock over-charging voltage = Auto
load line collaboration = Auto
CPU GTL Vol Ref = Auto
NB GTL Vol Ref = Auto

CPU SPREAD SPEC = Enabled // Disabling this causes instability - I dont see why that would cause instability You can google what Spread Spectrum does.
PCI-E SPREAD Spectrum = Enabled // Haven't tried ocing but I'm just waiting till CPU is done. I wouldn't even bother with that.

CIE Support = Disable
Max CPU ID value limit = Disabled
Vanderpool Technology = Disable
CPU + M Function = Enabled
Execute Disable Bit = Enabled

If I were more familiar with your Mobo, I'd suggest FSB and NB voltages, but I'm just not familiar. That should be pretty close to stock at 333FSB though, maybe just a slight bump, .05v or so. You could try .1v over stock, but there's no need to go higher than that for a small OC. Chances are, if its not stable with FSB and NB voltages boosted .1v, its not either of those causing issues. Also, setting them too high can cause instability, and when you start to increase NB voltage higher, you need to make sure your NB has decent cooling.
Edited by Blacklac - 3/10/11 at 10:18am
    
CPUMotherboardGraphicsRAM
Q9650 @ 4.3Ghz Gigabyte P45-UD3R EVGA GTX 960 SSC G.Skill Pi PC2-8800 8GB 
Hard DriveOptical DriveCoolingCooling
OCZ Vertex 460a 120GB LG SuperBlu Bluray/HD DVD drive Thermalright Archon Push/Pull corsair H75 (GPU) 
OSMonitorPowerCase
Win 8.1 64bit Panasonic 50" G25 Plasma Seasonic X650 Lian Li PC-B25F 
Mouse
Razer Mamba 
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CPUMotherboardGraphicsRAM
Q9650 @ 4.3Ghz Gigabyte P45-UD3R EVGA GTX 960 SSC G.Skill Pi PC2-8800 8GB 
Hard DriveOptical DriveCoolingCooling
OCZ Vertex 460a 120GB LG SuperBlu Bluray/HD DVD drive Thermalright Archon Push/Pull corsair H75 (GPU) 
OSMonitorPowerCase
Win 8.1 64bit Panasonic 50" G25 Plasma Seasonic X650 Lian Li PC-B25F 
Mouse
Razer Mamba 
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post #7 of 7
Thread Starter 
Haven't tried anything yet have to deal with a couple of things first for which I need the machine turned on but thanks for the suggestions Blacklac.

On the subject of:
CPU SPREAD SPEC = Enabled // Disabling this causes instability - I dont see why that would cause instability You can google what Spread Spectrum does.

Just with stable setting for 3Ghz if it was turned on prime95 would give me errors right away and turned off I ran it over night no problem.

When I looked into it most people disabled it. I'm not sure what it does I'll read on it, but that was my experience.

Once again thanks for the help
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