Should my overclock temps really be this bad ...

bhavv

bhavv

bhavv

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After reading a few more I7 overclock guides, I managed to get my 920 D0 working at 4.2 Ghz. I only tested it for 5 minutes though because the cores were heating up to 86-90 degrees, so I quickly rebooted.

Even at 3.8 Ghz, the temperature reaches around 75 degrees on the hottest core.

Voltages used are 1.3v for 3.8 Ghz, and 1.425 was needed for 4.2.

The CPU cooler is the Asus Triton 88 with two additional fans attached.

I just spent an hour refitting it and applying new paste, using the Asus paste it came with, but even with as good an installation I could do, the temps werent any different.

Both before and after the heatsink refitting, the large heatsink itself still only feels warm to the touch, and doesnt heat up anywhere near as much as my GPU coolers do.

The Asus thermal paste was very effective on my 5770s, but I have no idea why the CPU is still heating up so much. At stock speed it is at 38 idle, 62 load.
 
Thats definately on the warm side. Should be struggling to break 50C at stock and certainly no more than 70C in a decent case @ 3.8GHz.

The possible culprits are:

1. not cleaning the cooler and cpu contact areas with cleaning alcohol or similar so the paste cant do its job properly

2. the cooler isnt seated properly and is only making partial contact with the cpu.
 
Your volts are far to high, recommended highest for an i7 920 is 1.35v.

I'd say this is the main cause for your high temps. Your using an unusual cooler and paste also, not a lot of benchmarks to show how good it is compared to other coolers
 
ETNiES said:
Your volts are far to high, recommended highest for an i7 920 is 1.35v.
Click to expand...

This had been discussed before the max vcore from the data sheet is 1.55 however heat will become a problem before vcore. Mine has ran at 1.360 without problems. Agree with hybridx you need some mx3 and one the big boys to air cool at 4.2 dont think the asus can disapate the heat fast enouh
 
Yea, I'll buy a new cooler and MX3 paste.

The one I got was the only one available when the 920 D0 was released.
 
Well, reviews on my cooler definately show that the CPU temp should be around 50 degrees at full load on stock speeds.

I cleaned the CPU and Heatsink with TIM remover, I think that the thing might be faulty.
 
Do you have the std cooler mate although not good for 4ghz may be worth a punt and see if you normal temps at say 3ghz see if the mount or a really hot chip?
 
Im not sure how CPU reviews are done, but this is how I am stressing mine, Quad orthos with each one assigned to one core and thread giving 100% load:



Maybe it is just because I am giving the CPU 100% load?

Anyhow, it will not do 4.0 Ghz on 1.35v it needs around 1.375-1.4v, so I'll just assume its the chip thats bad. I didnt stress it for anymore then a few minutes at 4.0 Ghz+, as soon as I see the temp go over 80 degrees, I stop the run and reduce the frequency.

I'll just leave them at 3.8 Ghz and 1.3v, the hottest core gets up to 76-78 degrees at 100% load at that setting.
 
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Well, prime 95 is a lot easier, no need to manually assign the cores, but the result is the same:

cpustockstress1.png


After 10 minutes it is up to 62 / 58 / 58 / 57.

Bios settings are currently on default.
 
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And this is the setting I have been using 24/7 for a long time:

cpu3870stress.png


Its just one core that goes over 75 degrees with 100% load, the rest stay below that.

CPU voltage is actually at 1.3v, then I cant get 4.0 Ghz stable at all up to 1.4v, so I wont bother with trying to go any higher now.

When the 32nm CPUs are released for LGA1336, I'll upgrade and sell as usual anyway, and might buy a new cooler then. I'm glad I wont need a new motherboard for some time at least :)
 
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Currently testing mine at 4ghz, 193x21, 1.2750 vcore, highest temps so far running ibt, 73-68-68-67.
 
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