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Only 3% Overclocked And Already I Cant Boot?

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#1 SPL Tech

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Posted 28 November 2006 - 12:05 AM

The equipment I have is:

CPU: Core Two Duo 2.13 GHz. E6400
RAM: 2 GB. Corsair 800 MHz. XMS2 DDR2 (dual channel configuration)
GPU: X1900XT 512MB Connect3D
Mobo: Gigabyte GA-965P-DS3
PSU: 535 watt Enermax Whisper II
HD: 250 GB. Seagate Barracuda 16 MB.
Monitor: Hanns-G 19" DVI LCD widescreen

I started overclocking the CPU in the BIOS tonight. I got to only 2.232 GHz. and I couldn’t boot. However I know that if I leave the computer unplugged for a few seconds the mobo woill disable the overclocking and let me reboot. So I did that and entered the BIOS as soon as booted up and reenabled the overclocking and Windows started fine overclocked at 2.232 GHz. Then after I ran all my benchmarking tests and such I restarted again to overclock more. This time I choose 2.264 Ghz. I saved it in the BIOS and once again I could not boot. So I unplugged the computer again to revert to OEM settings and rebooted into the BIOS. And once again I reenabled the overclocking but this time I increased the vcore from 1.325 volts (stock voltage) to 1.33125 volts (one click up) and saved and exit. The computer restarted and once again I could not boot. So I unplugged the computer again and reverted to OEM settings and I just left the overclock off and that is where I am now.

So what’s going on? I talked to people with this same processor that said they did not even have to touch the vcore until 2.8GHz. I am but barely 5% OC’ed.

Maybe I am doing something wrong. This is how I went about things:

I started out at 2.175 Ghz. I ran PC Wizard 2006 and benchmarked the CPU. I wrote down the Whetstone (FPU) Wheitstone (SSE2) and Dhrystone results. I then keept the program open to monitor CPU temp, voltage and loading.

Then I ran two instances of Prime 95 (one for each CPU) and ran the torture test on each and choose the in-place large FFT’s for max heat consumption. I ran the program for about 4 minuets with both CPU’s loaded 100% and recorded the average CPU temperature.

Then I close Prime 95 and open CPU Stability Test 6.0 and test the computer for stability for about 4 minuets.

It was stable every time.

As far as the steps I took in overclocking and the temperature recorded I got:

1: 2.175 Ghz., 47-48 C
2: 2.207 Ghz., 48-50 C
3: 2.232 GHz., 49-50 C
4: 2.264 GHz., 50-51 C

So whats wrong?
CPU: Core Two Duo 2.13 GHz. E6400 OC'ed to 3.0 GHz. / 380 FSB RAM: 2 GB. Corsair 800 MHz. XMS2 DDR2
GPU: X1900XT 512MB Connect3D Mobo: Gigabyte GA-965P-DS3
PSU: 535 watt Enermax Whisper II HD: (2) 320 GB. Seagate Barracuda 16 MB. 7,200 RPM SATA II
OD: 52X DVD±RW Monitors: (2) Hanns-G JW199D 19" 16:10 widescreen DVI in extended desktop mode

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#2 Mr Alpha

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Posted 28 November 2006 - 06:20 AM

It could be that the RAM your using has Micron D9, which has had compatibility problems with the DS3. Go here to find out what chips your RAM is using.

Also, are you running the RAM at 1:1?
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#3 usasma


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Posted 04 December 2006 - 06:26 AM

Overclocking is a complicated subject - and it has impacts on all of your system components. Although your Core 2 Duo may be able to handle the overclock - other components may not.

There are settings (as Mr Alpha has noted) that will affect how the RAM, video, PCI bus, etc will run when overclocking via the FSB.
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