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***The Official Core i7 Overclocking Thread***

psykix said:
Well I'm watercooled, but my idle temps are similar to air cooling temps - and they should be about 38deg @3.8Ghz idle so 57c @ 3.2Ghz is way over the top...
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I thought so too. It's had one reseat just to make sure, coverage of AS5 looks just fine.

Daft as it sounds, I'm tempted to wipe it off and try the gunk that came with the Akasa. This is the first heatsink I've seen with copper bent in to directly contact the CPU - there are tiny gaps between the copper and aluminium square, maybe it's somehow better suited for this.
 
harris1986 said:
Hi guys am going to be ordering the following tomorow:

i7 920
Gigabyte EX58-UD5 (not the extreme version)
3gb G-Skill 12800

Whats the chances of hitting 3ghz on the stock air cooler? how good/bad are the stock hsf?
Click to expand...

I got 3.6GHz on stock air, but temps were quite toasty at 93c. Still worked fine though.
 
1ofaKind said:
So how many are having cold boot issues with the P6T?

I'm looking at 920, 6gb 1600 Dominator,P6T & Trueblack cooler.

I will be hooking up 2 x 1TB (Samsungs), Blu-Ray Drive, 280GTX, Enermax Galaxy 1Kw PSU.

My PC is switched off at the wall point each night so don't want to have to keep reseting the BIOS each time I boot up. Whats the next best alternative X58 board?
Click to expand...

If i was you i'd wait for early Jan when the GTX 295 is out. It's not meant to be much more than a 280 is now.

X58 reviews here. The P6T is the editors choice, and i really love this board, it's very easy to OC and i cant moan at 4.15GHz with 12GB RAM also running above spec. Just the cold boot issue is the only problem for now.
 
Hi Guys,

Will add my 2p's worth

Using the asus p6t with an i7 920 running @ 4ghz dead on.

I have the chip voltage set to 1.35v everything else on auto
loadline calibration is enabled.
spread spectrum on both cpu and pcie is disabled.
all management options for throttling and speeding up are disabled. (sorry at work so cannot remember their names)

now i did suffer a boot up issue at first, my 4870x2 would not display, i could see the pc boot and go into windows from hdd activity and then windows startup sounds, but no display, a reboot would then cure this.

I found that by setting the PCIE bus frequency to 110mhz seems to have cured this.

Under water im hitting 63c full load on all 4 cores and the 4 ht cores.

BTW guys who are disabling the HT for clocking are being a bit silly. HT makes this chip what it is ;)

Have to add love the board, i have the oc palm edition, the palm is now sat on the side off most of the time lol but there we go.
Very stable board well made and easy to oc with.

Using 6gb of ocz 1800mhz dominator ram.
 
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easyrider said:
fornowagain: Whats the max stable prime clok you have got under water?


If I get a 920 under my water what would be a realistic goal?
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Mines not a great chip. [email protected] is stable. 4.2v needs more voltage (also VTT) around 1.44v to pass prime and its more than I want to use. You'd be unlucky not to get 4GHz under water. You might get lucky with a low voltage chip that can do [email protected], seen a few. Not many and that includes 965 are prime past 4.2-4.3Ghz.

I think most of these first gen chips are pretty much the same for max prime clock. With a few low voltage golden chips that will clock higher, but not necessarily prime. Heat being a limiting factor I guess. You'll see a lot of screens with HT disabled, they really do put out a lot of heat with it on.

You also have to deal with VTT if you want to bump the baseclock way up, there's a lot of users with higher VTT for high BCLK. Over 1.4v, we'll have to wait and see the effect of that. What's odd is that a few of the chips don't like their default multiplier, x20 with a 920. And seem to do better with higher BCLK and lower multi. The higher BCLK also seems to use less Vcore for the same clock.

There's the usual BS over the motherboards. Reality is the i7's IMC kinda takes the variability away from the boards. Most of them, once the bugs are ironed out, will take a 920 past 200 BCLK. Just pick the one with the features you like with the best support. Don't get caught up by the hype, unless that's what you want. Frankly that's what you're paying for, bling.

Same goes for the memory once its past about 1300Mhz, as far as I can see speed makes little difference in most applications. I got faster memory simply for the flexibility of using higher mem frequencies that comes with lower BCLK. A 200 BCLK if you're ram limited will use x6 1200MHz, uncore x12. Its a big jump to the x8 at 1600MHz. Personally on a budget I'd get the cheapest 6Gb I could afford and not worry about the speed too much.
 
My Overclock on the stock intel cooler =

1.3v @ 3.8ghz Temps are 83 c under prime 95.

What is interesting is that RealTemp 2.90 ads 10c to what ever RealTemp 2.70 said the temperatures were.

Now my temperatures are around 93c under load (2.90 Realtemp). Still looking into getting a quiet cooler.
 
Realtemp 2.7 used a Tjmax of 95C, 2.90 uses the correct Tjmax of 100C. Should only be 5C difference. Also Prime blend stresses the chip more than Prime small/large ffts due to the IMC.
 
gurusan said:
That's what I was thinking.....the tri-channel pretty much takes care of bandwidth problems.
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yeah,

mobos are pretty much the same too.

If you can avoid the bling and the features you will never use then then i7 looks upgradable to most from quad c2d systems.


the oem 920 looks like great value.

A single bank of 2gb DDR3 and add 3 to your basket.;)

sorted
 
easyrider said:
yeah,

mobos are pretty much the same too.

If you can avoid the bling and the features you will never use then then i7 looks upgradable to most from quad c2d systems.


the oem 920 looks like great value.

A single bank of 2gb DDR3 and add 3 to your basket.;)

sorted
Click to expand...

whats the difference between the OEM version and the retail one?
 
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