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post #7131 of 10699
Quote:
Originally Posted by shad0wfax View Post



Thanks for the advice. I'm going to try a Prime95 run and see what my results are like at 4.9, then back down to 4.8, perhaps. I am still very happy with my 4.7 setup and I can always go back to it.


 

my cpu is good to 4.8 ghz at ~1.43v which is fine in my head on water, what i wasnt fine about was the heat it produced. rough measurements showed up to 80 watts from the wall compared to 1.36v at 4.5 ghz.. im perfectly happy with my 2600k at 4.5 ghz so thats what its running at smile.gif I only game so 60~80 watts on the cpu for 5% performance at best is lunacy
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post #7132 of 10699
I noticed an odd thing when I do stress testing.
After a few hours the Pc starts to smell a little. Doesn't smell like burning or smoke, more like metal or so.
My hardware is about 1 month old.
It has nothing to do with my case, because I changed it 2 weeks ago and the smell is still there.
I think it doesn't come from the psu either.
My temps are around 64-72°C and my vcore is 1.320V.
Where does this come from and does it indicate hardware failure?
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post #7133 of 10699
Quote:
Originally Posted by NARF View Post

I noticed an odd thing when I do stress testing.
After a few hours the Pc starts to smell a little. Doesn't smell like burning or smoke, more like metal or so.
My hardware is about 1 month old.
It has nothing to do with my case, because I changed it 2 weeks ago and the smell is still there.
I think it doesn't come from the psu either.
My temps are around 64-72°C and my vcore is 1.320V.
Where does this come from and does it indicate hardware failure?

You air cooling? I have had quite a few heat sinks get smelly when they get toasty. Havent had the issue since i went water with all my builds as the metal doesnt get that hot. But when i ran a slk-900, Yea it got smelly when it was getting pretty close to hot to the touch. Smell should go away over time btw. My tubes having decades of dust on them for the first week of running at 80~100C they smelt like they were going to catch on fire at any moment, then it finished 'burning off' all the stuck on dust

Same effect happens with hot water heating, first week or two of turning it on stinks up the house, then it goes away smile.gif
Edited by ryuji - 2/6/12 at 7:48pm
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post #7134 of 10699
Quote:
Originally Posted by NARF View Post

I noticed an odd thing when I do stress testing.
After a few hours the Pc starts to smell a little. Doesn't smell like burning or smoke, more like metal or so.
My hardware is about 1 month old.
It has nothing to do with my case, because I changed it 2 weeks ago and the smell is still there.
I think it doesn't come from the psu either.
My temps are around 64-72°C and my vcore is 1.320V.
Where does this come from and does it indicate hardware failure?


 

What's most likely, is that it's dust heating up. I'd recommend shutting your machine down, unplugging it from the wall, and then using some moderate pressure compressed air (or one of those cans of PC cleaner "air") to spray out your RAM, motherboard, fans, and the slots in your heat sinks. (Don't hold the can upside down, as that can cause the gas to come out as a supercooled liquid, which can be conductive and even short out components on your board; that's why it's important to turn the power off.)

 

Strange smells could be caused by having too much thermal paste on the cpu/heatsink, which then drips onto hot circuit boards and smells like a metallic greasy smell, since thermal paste is often (but not always) a metal impregnated grease. (Newer thermal pastes use non-conductive ceramics.) You normally won't smell thermal paste if you put it on sparingly, as it remains trapped between the CPU die cover and the heat sink itself.

 

It's also possible that it's the smell of heated components on the circuit board nearby. Those temperatures at the core of 72C may result in a localized temperature on a circuit board nearby, that is less efficiently cooled of 80C, and a PCB (printed circuit board) might just smell nasty at 80C.

 

Of course, strange smells can sometimes indicate hardware failure. I burned up a G.P. diagnostic card after it shorted out and I was unaware of the fault. It melted the sticker that was attached to the integrated circuit on the board and that melted sticker started to release a foul smelling acidic smoke. I freaked out and thought that it was my motherboard and shut the system down immediately, only to discover that the fault was localized to the small diagnostic board and had not harmed my system at all.

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post #7135 of 10699
All of Shadowfax's ideas look good to me. I'd like to add to make sure to not spin any fans if you do blow the heatsink out with compressed air. Either hold them with your finger if you can or stick a ziptie or something in there. You don't want a fan spinning while it's plugged in but not powered because it will generate electricity that if spun fast enough could harm whatever it's plugged into. Also even if it is unplugged it's bad for the motor to be spun while it's not powered.
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post #7136 of 10699
Thanks for the replies.
Yes, I run on air.
Never thought about the fans generating energy while plugged in.

Don't think the smell its because of the dust, the hardware is about 1 month old and the case is even newer.
I cleaned everything before putting it together and the new case got dust filters.

As for the thermal paste, I exactly followed the instructions for i5 cpus on the manufactures website (arctic silver pro).
I can't really see if there is too much on it, because my heatsink is huge (Scythe Ninja 3 120*120*160mm) and its hard to see anything under it.

What could be on the cpu cooler that causes this smell?
I mean pure metal doesn't smell like that at such relatively low temps.

I think it is something that takes time to develop.
When I did my 4.3Ghz 12h prime run it just smelled a little in the end, barely noticeable (with temps up to 68°C).
But after 12h of prime @ 4.5Ghz you could clearly notice the smell.
My cooling should be sufficient, I got 3*120mm case fans (1 front in, 1 rear out, 1 top out).
So it could be the temps that heat up the heatsink and stuff.
Or it could be the power drained by the cpu (maxing out at 140W) at full load causing parts of the mobo to overheat.
How do I find out now? I don't want to destroy my hardware just because I stress tested too much.
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post #7137 of 10699
It could still be dust. Sounds like you have negative pressure in your case with 1 in and 2 out. This can mean that air is drawn in through any gaps in the case and doesn't go through any filters. Dust doesn't take long to build up though, I know that a week after installing everything in my new case, there was a build up of dust on all of the filters that had to be cleaned off!
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post #7138 of 10699
Maybe you should get a thermocouple if your afraid to go feel around with your fingers. Me personally, the rule of 'If you cant hold your finger on it without discomfort it needs a heat sink' has treated me extremely well. The only things that have died on me is motherboards and memory, psu's gone bad due to poor power quality from power co has killed three mobo's total on separate psus/occasions(hence going extreme overkill on my currently owned psu) and one of the times the psu killed memory too. I had a mobo die of old age. it just one day didnt turn on anymore. and one motherboard that died during some suicide runs

i actually intend to open up and replace all the rectifiers in my psu and check out/replace the capacitors and mosfets to 'service' my psu to ensure it remains operating properly without any surprises. Thinking of modding it to be water cooled while im at it as its the most noticeable noisemaker in my pc tongue.gif
Edited by ryuji - 2/7/12 at 12:38am
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post #7139 of 10699
Thought I would join the fun. Was going for just a good starting point or baseline to really OC my 2500k. Here's what im running and sorry no pic im at work biggrin.gif

MSI P67A-G43 (B3) BIOS 1.9

Shes running at 4.5Ghz @ Idle Vcore of 1.248v and load 1.256v. Have it set in the BIOS for 1.255v
Off the top of my head EIST, C1E, Intel Power states, Spread Spectrum are disabled.
RAM is set to auto with XMP settings, High Vdroop, PLL Voltage enabled (only auto/enabled/disabled on MSI board)

Ran 15 runs through IBT on Standard, and 6 hours of Prime blend temps were around 65c-69c.
Ran through 3DMark Vantage 11(?) to kind of stress the whole system temps were around 55c-60c
Played about an hour of SWTOR, game ran smooth as butter and temps never went above 57c.

So for a baseline what do you guys think, can anyone with the same board recommend anything?? I only plan to go up from here so all input is appreciated.
Edited by Xtreme21 - 2/7/12 at 5:49am
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post #7140 of 10699
Quote:
Originally Posted by gceclifton View Post

It could still be dust. Sounds like you have negative pressure in your case with 1 in and 2 out. This can mean that air is drawn in through any gaps in the case and doesn't go through any filters. Dust doesn't take long to build up though, I know that a week after installing everything in my new case, there was a build up of dust on all of the filters that had to be cleaned off!

Hey, just noticed you got the same case.
How is your fan setup?

So I just surfed around and maybe found out some more.
I heard if it smells like ammoniac it could be caused by the residuals of the soldering flux on the board.
When it heats up, it evaporates.
I dont remember how ammoniac smells though.
I think my pc smells like a combination of solvent and metal.

Maybe I should do another stress test and wait for it.
Then I'll open my case and "go around" with my nose.

Besides that, my mobo got some overclocking presets with similar settings to my overclocks (they just use a bit more vcore).
So if those presets exist, my mobo should be able to handle it, or am I wrong?
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