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Old June 18, 2009, 03:57 AM
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Default Core i7 temperature question

Hey,

I received my i7 yesterday and after installing and taking it for a spin I decided to OC and see what it could do.

I managed to get it to 3.8GHz fairly easily with almost stock settings except for vCore which i upped 2 notches and the Cpu Vll which I changed to +100mv. This was fine and had load temps around 68-69c after 2 hours of Prime95.

I later changed my uncore multiplier to 16x (Needed to get RAM at 1600MHz) and enabled Intel EIST. When I booted and stressed with Prime95 my loda temps soared to 77-78c after 20mins in prime.

A 10c difference seems abit much for not increasing voltages...anyone have any idea as to what could have caused this increase??
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Old June 18, 2009, 04:07 AM
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memory controller on chip ( ram running higher so uncore is higher)
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Old June 18, 2009, 04:16 AM
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That would make that much of a difference eh??

I have read mixed reactions about temp limits of core i7. Some people say stay below 70 while some say stay below 80. I plan on running this way for a awhile and would like to keep my processor's life expectency good lol. So would load temps of 77-78c be a no no?
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Old June 18, 2009, 04:42 AM
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for me on air yes but that's me a lot of people think your fine anything under 80 like you said. air for me=60c and under water for me = try not to blow it up ha ha i try to stay under 80 always
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Old June 18, 2009, 05:58 AM
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Well it seems intel eist had a major factor in my temp increases. I turned it off just to make sure and when I tried stress testing my temps were at 65c again at full load.
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Old June 18, 2009, 06:02 AM
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that's weird with my eist on my temps are cooler
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Old June 18, 2009, 06:03 AM
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give full specs it will help a lot
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Old June 18, 2009, 07:15 AM
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I didnt change much in regards to voltages:

OC Specs:

Voltages:
Vcore - +30Mv (1.255v)
RAM - 1.6v
CPU VLL - +100Mv

Multiplier:
20x CPU Multiplier
16x Uncore Multiplier
12-14x QPI Multipler (Lowest is can go)
8x Ram Multiplier

BClK - 190MHz

Hardware:

Core i7 920 (Cooled with TRUE 120 in push config)
Bloodrage GTI Motherboard
G.Skill DDR3 1600MHz RAM
2x GTX260 In SLI
Corsair 750w PSU

I'll check in BIOS and make sure I listed all changes.
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Old June 18, 2009, 08:55 AM
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Loads temps of almost 70C is DEFINITELY too high. Have you tried reseating the heatsink? Make sure you're applying enough TIM on your cooler.

Also, how's the airflow in your rig?
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Old June 18, 2009, 08:59 AM
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@geokilla, these chips run damn hot. It's not unusual to see load temps that high as everyone is trying to hit the magic 4.0Ghz on air. Give advice after you've played with one for a while.
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