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How to go about overclocking a Q6600???

post #1 of 6
Thread Starter 
Ok so I have just invested in a lovely little water cooling loop and would like to see how high I can get my Q6600 on the Asus P5Kc, I'm currently sat at 3.0Ghz quite contently but I would like to try and push it up to 4.0Ghz, or at least over 3.4Ghz. Now I'm a complete noob when it comes to OCing, and I don't quite understand the link between the CPU and the RAM if someone could help me out by pointing me to an artical which explains what I need to know or who have OC'ed a Q6600 on a P5Kc and might know the settings I need. I would find any help on the matter most kind.
post #2 of 6
Is it B3 or G0?It is very important to know that because G0 can be pushed much more and better then B3.
post #3 of 6
Thread Starter 
Quote:
Originally Posted by hrcox View Post

Is it B3 or G0?It is very important to know that because G0 can be pushed much more and better then B3.

Its a G0.
post #4 of 6
I think it is unrealistic to get the Q6600 to 4GHz without some special cooling.

Edit: Oh, I did not get the detail that OP already have watercooling. Sry about that.
Edited by Decoman - 5/15/12 at 9:39am
post #5 of 6
First you have to check where you have walls - FSB, RAM and CPU - start with low multiplier for CPU and RAM and see at which point the FSB is stable and where not. Then start pushing the CPU with lowering the FSB and finally check the RAM, or you could find some point in which the RAM and FSB work alongside.

P.S. And what VID is the chip - the lower the vid the more headroom you will have, don't expect high performance from a chip that it runs @ 1.35v at stock.
Edited by Vipervlv - 5/15/12 at 4:57am
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Dell XPS L702x
(16 items)
 
Xeon System Rig
(20 items)
 
Office Rig
(13 items)
 
CPUMotherboardGraphicsRAM
i7-2630QM HM67 B3 03RG89 GeForce GT 555M 3GB w/ TV Tuner Corsair Vengeance 8GB DDR3 1600Mhz@1600 CL9 
Hard DriveHard DriveOptical DriveCooling
90GB Corsair Force 3 SSD Sata III 750GB WD Scorpion Black 7200RPM Toshiba DVD+ROM Custom Cooler 4x120 - 1800RPM fans 
OSMonitorKeyboardPower
Windows 7 x64 SP1 Home Premium 17" 3D Full HD 1080p Microsoft Gaming X4 9Cell Battery/150W AC Adapter 
MouseMouse PadAudio
Roccat Kone+ MAX Roccat Sense High Precision SB X-Fi 
CPUMotherboardGraphicsRAM
Xeon X3230 3.3@1.23v DFI LP UT X48-T2R XFX GTX285 1GB DDR3 [BlackEdition] 4x2GB G.Skill PI 8800 1100Mhz 
Hard DriveOptical DriveCoolingCooling
150GB(RaptorX)/500GB(SG)//640GB ADATA SH93 DVD-ROM NEC EK Supreme HF (Copper+Plexi) Water Block Swiftech Micro Res. V2 
CoolingCoolingCoolingCooling
Black Ice Rad 240 EK DCP 4.0 Pump Swiftech NB block 6x120mm Fans (2xCoolink Swift 120P, 2xArctic Co... 
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CPUMotherboardGraphicsRAM
Q9550 2.83@1.25v Asus P5Q-E GeForce GTS 250 2x2 GB Corsair XMS2 CL5 1066Mhz 
Hard DriveOptical DriveOSMonitor
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post #6 of 6
You won't get to 4GHz stable on that board, the 3 phase VRM is going to hate running a quad at a decent overclock even if they're decent quality phases.

I know it's too late saying it now but instead of buying watercooling you should have bought a board that can handle a quad at high clockspeeds and an air cooler.

That said, set memory 1:1 with your FSB (so 666/7MHz at 3GHz if you're on the 9x multi) then up the FSB slowly until you encounter instability. When you encounter instability try increasing either the NB voltage or your CPU Vcore to stabilise your overclock.
Go easy on the Vcore because a 3 phase VRM means it won't handle the extra current that will be flowing through the CPU at higher OCs well at all, put a fan over the heatsink to the left of your CPU socket and if it's getting too hot back down. Personally, I'd leave it, a 3 phase VRM is not enough to overclock a Q6600 to the fullest.

Sorry to be the bearer of bad news but I would strongly recommend against going above 3 on that board, if you want to try anyway just be very conservative with voltage.

Edit: Mods like this one exist because the VRM is insufficient for an overclocked quad, there should be some info on that page if you're wondering why a 3 phase VRM might cause a problem.

Edit2: And I'm not suggesting you mod it, I know I'd screw up a mod like that if I tried it. I'm just saying a mod like that wouldn't be necessary if the board didn't have serious problems with quads.

Here
's an example of someone who pushed his Vcore too far and killed something with a P5KC and Q6600. (page 3 for the bit where he says it's dead)
Edited by Mike-IRL - 5/15/12 at 5:32am
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Ex-Kentsfield rig
(20 items)
 
Q6600 RIG :D
(9 items)
 
 
CPUMotherboardGraphicsRAM
4790k MSI Z97M Gaming 780 Ti SLi Corsair Vengeance pro 2x8GB 
Hard DriveHard DriveCoolingOS
Seagate NAS 240GB m500s RAID 0 MCP 350 w/ res top >> MCP655 >> Heatkiller full... Windows 8.1 
MonitorKeyboardPowerCase
3X QNIX 2560x1440 @ 110Hz G910 EVGA Supernova 1000 G2 Stacker 830 
MouseMouse PadAudioAudio
G402 / Deathadder 2K13 League of legends one, cloth ODAC >> O2 >> HD800 / K702s Samson mediaone 5as 
AudioOtherOtherOther
Samson GoMic Asus wireless AC Logitech G27 Logitech C920 Webcam 
CPUMotherboardGraphicsRAM
Q6600 Asus P5Q-E 8800GTX Crucial Ballistix Tracers 
Hard DriveCoolingOSPower
320GB Samsung spintpoint T166 Xigmatek Dark Knight 7 Chieftec 390W :p 
Case
Some generic chieftec one for now 
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