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OC Q6600 Question

post #1 of 7
Thread Starter 
Hi, I'll start off by saying I'm fairly new to overclocking but I've been around PCs for a while. Before I did anything I read through a bunch of forums and did lots of research. My current setup is as follows:

2 evga 9800 GTXs
Q6600 2.4ghz intel quad core (liquid cooling)
evga 780i mobo
4gb Memory Mushkin High Performance II (HP2)
Thermaltake Toughpower W0117RU Power Supply (750watts)
Thermaltake case

Anyway, this is a new PC, and I was just trying to overclock it a little bit just to get a little boost in performance. I managed to get my CPU to 2.69ghz which was 1195mhz FSB (299x9 bus speed). When I go anymore than that (1195), once my computer gets to the Windows loading screen, there's just a black screen instead of the loading bar and I end up having to restart.The CPU multiplier was at 9X and I also brought it down to 8X, but at 1200 it just black screens. This was just at stock volt too, I think I tried going to 1.3 but had the same result. My vcore runs at 1.15v minimum and 1.28v max according to CPUID Hardware Monitor.

Anyway, if anyone has any advice I'd appreciate it. It may be that the vcore needs way more volts than I'm giving it, but I'd like to here what someone else suggests.
post #2 of 7
Take a peek at this:

http://www.overclock.net/intel-mothe...ing-guide.html

I'm sure it'll give you some good ideas as to what needs to be done.

I don't own that board personally but I'm sure there are many on here that do and can give you more advice. Just trying to give you a starting point.

Also, check this post from Mega_option101 **Essential Overclocking Software Kit**
http://www.overclock.net/downloads/2...tware-kit.html

It has some programs you'll need to stress test your rig and monitor the temps

P.S. I had the same 1200 FSB issue with my mobo and after a few bumps of the FSB VTT voltage I could get to 3ghz and over without much of an issue. ( I prefer 3ghz as I'm not an extreme OC'er)

Good luck.
Edited by BEEPO - 6/6/08 at 12:09pm
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 G0 3ghz @ 1.30 MSI P6N 650i SLI Platinum 8800 GT 512 (G92) CORSAIR 4GB (2 x 2GB) (6400) 
OSMonitorCase
Win XP SP2 (32bit) HP LP3065 (2560x1600) Cooler Master Centurion 5 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 G0 3ghz @ 1.30 MSI P6N 650i SLI Platinum 8800 GT 512 (G92) CORSAIR 4GB (2 x 2GB) (6400) 
OSMonitorCase
Win XP SP2 (32bit) HP LP3065 (2560x1600) Cooler Master Centurion 5 
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post #3 of 7
Thread Starter 
Thank you for your reply, BEEPO. I'll check those links out and see what I can do. I also just want to get to 3ghz, I don't need to go too extreme like some of the guys who go to 3.6ghz, sounds amazing, but I'm just scared hehe.
post #4 of 7
In my opinion, you're in an fsb hole. I have that chip, and that board, and that's exactly where I hit one (I got past it, and I'm now @3.4 24/7). An fsb hole is basically a range of fsb settings in which you can't post, even though your chip can run at even higher fsb speeds (google the term for more info).

Leave the multiplier at 9. (Don't touch volts, yet. Leave everything on Auto for now.) Enter 1135 as your fsb (4x334, just a touch over 3.0 ghz), and boot. I think you may be pleasantly surprised. If you still don't post, or don't get into Windows, up cpu volts (in BIOS) a notch at a time until you do. Shouldn't take too much more vcore (if any) to get into Windows @3.0. It seems the main thing about fsb holes is to resist the temptation to raise volts.

You may want to take a look at this. If my recommendations don't work, and if you feel comfortable upping voltage, try what this guide recommends for q6600s (Kentfields):

http://www.evga.com/forums/tm.asp?m=222688

Those volts will definitely get you into Windows@3ghz. If they don't, let me know and I'll PM you my home address so you can come and kick my ass. However, you'll then have the task (after booting, not after kicking my ass) of lowering the volts, through stability testing to see how low you can go, because those settings are kind of high for 3ghz. (Even aside from voltage recommendations, that guide, and that forum, can be useful for oc'ing on this board).

Two other things that probably aren't an issue right now, but may become one: I see you have 4gb RAM. Can't tell if it's 4x1 or 2x2. These boards (and many others) don't like all 4 memory slots filled. It can keep you from oc'ing higher, and it may require more volts to your SPP/northbridge, which is already pretty hot on this board. If you're 4x1, you may want to depopulate two (non-adjacent) slots, or raise SPP volts, eventually...shouldn't hold you back from 3ghz, though. And if you've got 2x2, never mind.

Also, you've got a good power supply, but 750 watts may struggle with an oc'd quad and two 9800. You may want more power.
post #5 of 7
Sounds like to me you need to disable CIST, speedstep..or whatever is called on the 780i.

Also, what kind of CPU do you have?

Make sure your memory ratio is set corretly.
intel
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7 920 D0 4.2ghz with HT @ 1.275V Bios EVGA 3X SLI, 132-BL-E758-A1 2x XFX HD5870 in Crossfire 6gb 3x2gb Corsair XMS3 1600mhz @ 7-7-7-20 
Hard DriveOptical DriveOSMonitor
3x WD 640gb AALS Raid 0 22x Samsung SATA DVD-RW Windows 7 Dell 3008wfp IPS 
KeyboardPowerCaseMouse
Logitech G19 Corsair 850TX, 70A on a single 12v rail!! Corsair 800D Logitech G500 
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intel
(13 items)
 
  
CPUMotherboardGraphicsRAM
I7 920 D0 4.2ghz with HT @ 1.275V Bios EVGA 3X SLI, 132-BL-E758-A1 2x XFX HD5870 in Crossfire 6gb 3x2gb Corsair XMS3 1600mhz @ 7-7-7-20 
Hard DriveOptical DriveOSMonitor
3x WD 640gb AALS Raid 0 22x Samsung SATA DVD-RW Windows 7 Dell 3008wfp IPS 
KeyboardPowerCaseMouse
Logitech G19 Corsair 850TX, 70A on a single 12v rail!! Corsair 800D Logitech G500 
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post #6 of 7
Thread Starter 
Thanks for all the advice. My CPU is a Kentsfield and my ram is in 2 sticks. I booted up my system at 4X334 and it booted to windows and is working fine. I have my cpu fan running at 100% in the bios to try to keep my cpu temp under wraps; right now it's running the same temp as it was at 2.4 ghz. I'm wondering though if my fan at 100% will make me have to change my the liquid in my liquid cooling faster.

3ghz is where I wanted my cpu, I figured at that speed it wouldn't put too much stress on the processor, but at the same time giving me more power. So now I guess it's time to tweak my ram and pray for the best.
post #7 of 7
Most Q6600 will run 3.4 with out to much of a push, there very durable and you won't need a lot of voltage to get there.

BTW, HI and WELCOME to OCN
    
CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
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CPUMotherboardGraphicsRAM
X4 965 ASUS M4A79 Deluxe 9800GTx2 2x2G OCZ Reapers 
Hard DriveOptical DriveOSMonitor
500G WD Black LiteOn CD/DVD R/W Win7 64 22'' ws Acer AL2223W 
KeyboardPowerMouse
MS KU462 Natural SS DA750 MS 5 button 
  hide details  
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