P182 i7 system

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kermith
Posts: 18
Joined: Sat Feb 28, 2009 7:20 am
Location: Netherlands

Post by kermith » Mon Apr 06, 2009 8:42 am

also, if using 1600 is considered an overclock does that mean more cpu cooling > more noise? and if so how much more cooling/noise?

InfyMcGirk
Posts: 78
Joined: Mon Mar 16, 2009 2:06 pm
Location: East Midlands, UK

Post by InfyMcGirk » Tue Apr 07, 2009 12:02 am

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... :(

Riffer
Posts: 517
Joined: Mon Jan 06, 2003 4:14 pm
Location: Toronto, Canada

Post by Riffer » Tue Apr 07, 2009 5:07 am

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... :(
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.

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.

InfyMcGirk
Posts: 78
Joined: Mon Mar 16, 2009 2:06 pm
Location: East Midlands, UK

Post by InfyMcGirk » Tue Apr 07, 2009 5:32 am

Interesting! Thanks for the clarification. :)

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