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Computer restarts while tyring to overclock

Last response: in Overclocking
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December 21, 2009 11:25:30 AM

Here is my system:

Processor:Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs)
Memory: 2048MB Patriot DDR2 800 (PC2 6400) RAM
Hard Drive:750 GB WD SATA Caviar Black 7200 RPM; 400GB WD SATA 7200 RPM
Video Card:NVIDIA GeForce GTX 260 SC 896MB
Operating System: Windows 7 Professional
Motherboard: GIGABYTE GA-EP31-DS3L 775 P31 RT

I went into the BIOS and went into the MIT section and i changed my FSB 5 MHz faster so try to overclock. Before rebooting, I also changed the System Memory Multiplier (SPD) to 2.5 or 2.0 because beside "(SPD)" it says 800 (assuming thats the current speed of the RAM). I changed it and it said something the in the 600 range. I figured that would be fine since it's below the 800MHz. I rebooted, it tries to turn on, then shuts off, turns on again with safe settings loaded again. I was wondering what I was doing wrong?

Thanks for all your help. :) 
a c 280 K Overclocking
December 22, 2009 12:38:37 PM

What PSU do you have?
Related resources
December 22, 2009 1:02:23 PM

PSU: 650W Coolermaster
a b å Intel
a c 197 K Overclocking
December 23, 2009 4:21:50 PM

Hitting 3.0 GHz should be a piece of cake with a Q6600. In the BIOS, set your memory multiplier to 2.0. Set your FSB freq to 333 MHz. You might need to increase CPU core voltage a little. You should be able to run at 3.0 GHz safely with the stock cooler.

For anything more:
This should be your first stop.
HOWTO: Overclock C2Q (Quads) and C2D (Duals) - Guide v1.6.1
http://www.tomshardware.com/forum/240001-29-howto-overc...

Next stop should be a guide for your particular motherboard. Google is your friend.

Shadow's Gigabyte motherboard OC guide:
http://www.tomshardware.co.uk/forum/page-245679_11_0.ht...
This is for a P35, but all the Core2 Gigabyte BIOS's are similar.

For anything higher than about 3.2 GHz, you will need better cooling. Here are two under $50 heatsinks that are pretty popular:
Sunbeam
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Xigmatec Dark Knight
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

They both require a somewhat different approach to applying thermal compound.
Suggestions for applying thermal compound:
http://benchmarkreviews.com/index.php?option=com_conten...

And they are pretty large, so they might not fit inside your case.

And here's a good budget cooler:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
This should be good to about 3.3 - 3.4 GHz.

Keep your core temps under 70 C and your core voltage under Intel's recommended max of 1.3625 volts.

You are lucky the system restarts with safe values. Some motherboards need to have the BIOS cleared after a failed overclock.

Keep in mind that these are guides, not cookbooks. YMMV. Your Mileage May Vary. Because of all the variables, you may not do as well as someone else with a similar system. Or you might do better.
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Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz
December 23, 2009 10:15:05 PM

jsc said:
Hitting 3.0 GHz should be a piece of cake with a Q6600. In the BIOS, set your memory multiplier to 2.0. Set your FSB freq to 333 MHz. You might need to increase CPU core voltage a little. You should be able to run at 3.0 GHz safely with the stock cooler.

For anything more:
This should be your first stop.
HOWTO: Overclock C2Q (Quads) and C2D (Duals) - Guide v1.6.1
http://www.tomshardware.com/forum/240001-29-howto-overc...

Next stop should be a guide for your particular motherboard. Google is your friend.

Shadow's Gigabyte motherboard OC guide:
http://www.tomshardware.co.uk/forum/page-245679_11_0.ht...
This is for a P35, but all the Core2 Gigabyte BIOS's are similar.

For anything higher than about 3.2 GHz, you will need better cooling. Here are two under $50 heatsinks that are pretty popular:
Sunbeam
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Xigmatec Dark Knight
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

They both require a somewhat different approach to applying thermal compound.
Suggestions for applying thermal compound:
http://benchmarkreviews.com/index.php?option=com_conten...

And they are pretty large, so they might not fit inside your case.

And here's a good budget cooler:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
This should be good to about 3.3 - 3.4 GHz.

Keep your core temps under 70 C and your core voltage under Intel's recommended max of 1.3625 volts.

You are lucky the system restarts with safe values. Some motherboards need to have the BIOS cleared after a failed overclock.

Keep in mind that these are guides, not cookbooks. YMMV. Your Mileage May Vary. Because of all the variables, you may not do as well as someone else with a similar system. Or you might do better.
----------
Overclocking since 1978 - Z80 (TRS-80) from 1.77 MHz to 2.01 MHz


Thanks for the motherboard guide! I had looked at the other guide as well and i tried to put it all together. The same thing happened again. It tries to boot, no monitor lights turn green, shuts off computer, turns computer back on with the "CPU Host Clock Control" as disabled. I'm assuming it does that because that was a safe point when it could boot. Even if I change the "CPU Host Frequency" 4-5 Mhz faster, it fails. There has to be something I'm doing wrong?

I haven't increased the "CPU Voltage Control" because I didn't think it would matter with a 4-5 Mhz increase.

Thanks for your help.

P.S. I have a Prolimatech Megahalem Rev. B Cooler, so I should be good on cooling. 34-35C idle. 45C during Modern Warfare 2 with about 70% load on CPU.
a b å Intel
a c 197 K Overclocking
December 23, 2009 10:43:22 PM

What's the VID of the CPU chip?
December 23, 2009 10:47:10 PM

jsc said:
What's the VID of the CPU chip?


1.2750V
December 26, 2009 11:40:19 AM

jsc said:
What's the VID of the CPU chip?

any ideas jsc?

Thanks.
!