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Northbridge temperature advice

post #1 of 8
Thread Starter 
Hey,

So i managed to OC my e8400, and it has been stable for the past week+.

Here are my specs:

p5q(standard) i have my e8400 stable @ 4.140 ghz

Vcore = 1.4 in bios
Vcore idle cpuz (with droop) - 1.384
vcore under load cpuz (with droop) - 1.392
multi = 460
Northbridge = 1.2v

g-skill pc2-8500 @ 1102 mhz - 2.14 v (had to go to 2.14 to be stable, 2.1 wasnt cutting it)

i also have a 4870x2, which sits under the northbridge and puts off alot of heat.

Whem gaming, i have been monitoring my temps with Hardware Monitor and AIDA64 (formerly Everest).

My motherboard temps under full load are 46 degrees celcius. Idle - 30. This is the Motherboard -> "System" temperature reported in hardware monitor. I believe this is the chipset because when it is 30 and i touch the northbridge, the northbridge heatsink is cool. When it is 46 and i touch the northbridge, it is hot.

Furthermore, I have a 120 mm side case fan blowing half on the chipset and half on the gpu.

I decided to pop the side of the case off and feel the northbridge, and it was uncomfortably hot, i could not hold my hand ontop of it for more than a couple seconds.

I am worried i am running the chipset too hot?

yesterday i put new arctic silver 5 on the chipset, this could explain why the chipset is getting hotter now, because of the better heat conducting (the old grease was caked on hardness)...

Is this sensor monitoring the actual chipset or near the chipset, from what i have read 46 for the p45 chipset is nothing to worry about... but if the sensor is "near" the chipset, the chipset might be getting way hotter.....

What do you guys think?

Thanks,
-Mausimo
Edited by mausimo - 4/19/11 at 11:58am
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post #2 of 8
If the chipset was as how as you say, I doubt it was only 46°C - your hand is 37°C so only 9°C wouldn't feel that hot.
From experience, my former P45 board also got the stock NB radiator pretty hot, it was just below 70°C. This didn't put stability at risk, apparently they can go over 70°C and work fine. As for me I replaced the NB radiator with a heatpipe aftermarket radiator (HR-05 SLI) and the temps dropped to around 40°C.
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post #3 of 8
I'd say that you're OK. Replacing the thermal paste on the chipset was a good idea. I have/had the same trouble with the Northbridge on my MSI X58 Pro mobo. The heatsink is pitifully small compared to competitiors. MSI claims that the chipset can run upwards of 80-90c and be within spec, but I replaced the wimpy spring-loaded fasteners with nylon screws and bolts plus added OCZ freeze TIM. Big difference in temps but as added insurance, I placed a fan directly on the sink. Mine runs 39-40c with the fan and 55-60 without.

You're absolutely correct that the TIM is doing it's job if the heatsink is hot. Adding a separate fan will drop the temps even more I would imagine. Good Luck
post #4 of 8
Thread Starter 
I replaced the stock Northbridge Heatsink with : http://www.memoryexpress.com/Product...8%28ME%29.aspx

I used Arctic Silver 5 paste.

The Motherboard -> System temperature is reporting 43 max load. However when touching the heat sink, it feels way cooler...

My concern now, is that this heat sink is either a.) doing such a good job that the heat is dissipating out of it rapidly or b.) the heat sink is doing a worse job and not conducting the heat and the chipset is getting hotter.... hmmmmmm

Whats your thoughts? Stick with this guy or go back to the stock?
Edited by mausimo - 4/19/11 at 11:58am
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post #5 of 8
stick with it, it has to be better than stock.
as mentioned above, imo your temps are fine, you have changed the TIM to a better one (AS5), you have a better cooler and you have a side fan blowing onto it, relax you are fine.

also in future, if you click on user cp at top of the page, then along the left of page select edit system
fill in your specs, so you dont have to fill it in for every post.
also welcome to the forum
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post #6 of 8
I always directly cool the NB on all aggressive overclocks. Moderate overclocks the NB should at least get some air directed it's way. You'll see at least 10C of difference just from having air pass over the heatsink instead of it sitting in stale hot air.
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post #7 of 8
Quote:
Originally Posted by 2thAche View Post
I always directly cool the NB on all aggressive overclocks. Moderate overclocks the NB should at least get some air directed it's way. You'll see at least 10C of difference just from having air pass over the heatsink instead of it sitting in stale hot air.
I agree with this, I have had very good results with having something like an 80mm fan directed straight down onto the NB, just getting that air movement between the fins can kill heat.

775 socket does have a very hot NB however, for high clocks on it water or decent chipset coolers are ideal.


Edit:
Also, unless the temp monitor actually says chipset, the temperature monitor could frankly be anywhere on the mobo.
    
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post #8 of 8
Quote:
Originally Posted by 2thAche View Post
I always directly cool the NB on all aggressive overclocks. Moderate overclocks the NB should at least get some air directed it's way. You'll see at least 10C of difference just from having air pass over the heatsink instead of it sitting in stale hot air.
This couldn't be more true the NB is important and keeping it cool will help with stability and longevity of the chipset/board.

Quote:
Originally Posted by Crabid View Post
Also, unless the temp monitor actually says chipset, the temperature monitor could frankly be anywhere on the mobo.
Agree with you on this too never know where that sensor might be.
    
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