i7 overclocking

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30 Jan 2009
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hi all, gonna try to cram this all into one post before i head back to work so apologies :p

im currently building a new rig: i7 920, evga 295, corsair 1600mhz 6gb ddr3, done some research but im still new to overclocking. Im aiming to overclock the cpu so that it doesnt bottleneck the more expensive gpu.

Im aiming for around mid-high 3's freq. on air in an antec 1200. Is that a suitable and stable clock? Also any recommendations for cpu coolers are welcome as i know very little about types/brands of them, assuming the intel stock fan wont be enough :confused:

Concerning the ram, do i simply need to set the uncore freq to 3200 in the bios to make use of the 1600mhz? is it worth getting a dominator fan for the ram if i keep it at 1600mhz? I've read that the ram should be kept under 1.7v to prevent hardware damage, but is there a voltage that the cpu should generally be kept below as well?

Finally ;) im still in the process of choosing a mobo to plant the whole lot on. Like the look of the evga x58. Would it be worth waiting a couple of weeks for the more advanced evga classified board, or will this not make a difference unless aiming for exceedingly high overclocks?

Many thanks :D
 
i would wait till at least march for the new evga boards apparently,even if you dont buy,the current board should come down in price
 
I don't think that the more expensive boards/new release boards are/will be any better or worse for oc'ing.

I have found that the ASUS P6T Deluxe is perfect and has got me to 4.2Ghz without any fuss (I am on Water though). You could also look at the ASUS P6T (non-deluxe) if you don't have a need for SAS.

Before my water cooling I was on air and had the Noctua NH-U12P which allowed me to clock to 3.8Ghz no problem.

With regards to the CPU & Ram voltages, I think that the general consensus is that anything over 1.4v is beginning to get towards being harmful to the chip, however through my experiences you will want somewhere in the region of 1.3-1.35 to get a stable mid-to-high 3Ghz o/c. 1.65v is enough & safe to keep the Dominator running at 1600mhz

You don't need the Dominator Airflow thingy but you might as well get it because it looks quite cool & are reasonably cheap. They can be fiddly to fit though.

Finally, remember that every chip is different which means even if you have the most expensive motherboard and the best coolers out there, you could get a dog of an overclocker that won't go past 3.0Ghz. However, hopefully you will get a gem which allows you to go all the way to 4Ghz!! Good luck & fingers crossed!
 
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Ahh been looking for some info on this, struggling with my 920 OC, I was trying for 190 and can get it to be 'blend' stable in prime.

However I'm having to put about 1.45V in bios (windows reads it about 1.34 I think. I didn't want to up the voltages anymore because I know it was starting to go into the unknown.

However at 160x21, on fully load it's only 60 degrees or less, is there much in the way of head room or should I back off with the volts/turn turbo off.

Sorry to hi-jack a bit, but kinda related.. ;)
 
Ahh been looking for some info on this, struggling with my 920 OC, I was trying for 190 and can get it to be 'blend' stable in prime.

However I'm having to put about 1.45V in bios (windows reads it about 1.34 I think. I didn't want to up the voltages anymore because I know it was starting to go into the unknown.

However at 160x21, on fully load it's only 60 degrees or less, is there much in the way of head room or should I back off with the volts/turn turbo off.

Sorry to hi-jack a bit, but kinda related.. ;)

Is that 1.34v while on load?
 
Heya, back at home and reverted my previous OC to,

20x CPU Multi
180 BCLK
8x Mem Multi (1400 or something)
1.362 V in Bios
w/ Turbo

Volts under load in windows is 1.296 V temps around 65-69 but heating's kicked in now so a bit warmer then when I tried before.

Will check webbo, but I think it's disabled.. will go have a poke around ;)

[EDIT]

Seems it was disabled, enabled and 1.4 V in bios equates to 1.376 V under load, but running @ 75-80 with a large FFT at 190..

[/EDIT]
 
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