P182 i7 system
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- Posts: 78
- Joined: Mon Mar 16, 2009 2:06 pm
- Location: East Midlands, UK
Essentially only the eye-wateringly expensive i7 models have an unlocked multiplier... so raising the speed of the 'bclk' on cheaper models is the only way to overclock. Running memory at 1600 is done in this way. It will definitely take more cooling than running at stock but the good news is the X58 chipset seems quite cool even when OCed and with a big, modern, cooler you shouldn't have to run your (120mm) fan(s) very fast, I hope.
I'm planning on doing this but I'm still getting the money together...
I'm planning on doing this but I'm still getting the money together...
The multiplier is maxed at 20, but not locked on retail 920's. This means (theoretically) you can back off on the multiplier while increasing the FSB, thus obtaining a higher, more stable overclock.InfyMcGirk wrote:Essentially only the eye-wateringly expensive i7 models have an unlocked multiplier... so raising the speed of the 'bclk' on cheaper models is the only way to overclock. Running memory at 1600 is done in this way. It will definitely take more cooling than running at stock but the good news is the X58 chipset seems quite cool even when OCed and with a big, modern, cooler you shouldn't have to run your (120mm) fan(s) very fast, I hope.
I'm planning on doing this but I'm still getting the money together...
For example:
Stock 920 133*20=2660 Memory 133*2*4=1064
@167&20x 167*20=3400 Memory 167*2*4=1336
@200&19x 200*19=3800 Memory 200*2*4=1600
At least, that is the theory.
Unfortunately, I am bogged down in other stuff, so I haven't been able to validate this yet.
Edit - I said what the hell and decided to confirm the unlocked multiplier on retail 920's. I reset the multiplier on my ECS X58B-A to 19x and rebooted. It came up in CPU-Z and CPU Tweaker as 19x, so this is confirmed.
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- Posts: 78
- Joined: Mon Mar 16, 2009 2:06 pm
- Location: East Midlands, UK