Furmark and prime, same time, burning smell.

[gilly1984]

I just ran furmark and Prime95 at the same time and it smells like burning circuit boards. The CPU went to 88c and the GPU went to 115c.

I could here the power going through it just by the sound of the fans, sounded like they were starved of power, dropped their rpm.

I think its the psu, its a 500w psu, but judging by that test it has no ooomph.

My fucking house stinks lol.

What do you guys think?

Screen shot of it here. (Just make sure no porn open) (Nope, none open so upload).

[mariushm]

Re: Furmark and prime, same time, burning smell.

No, it's the video card.

Be careful, Furmark did actually kill video cards in the past... AMD/ATI actually throttled it down in drivers after Radeon 4850 and 4870 cards started to die... the vrm regulators were dying on the boards.

It might be the plastic fan on the video card melting from the heat of the heatsink ... check the video card carefully and it wouldn't hurt to put a 120mm fan to blow air on the card if you start making these experiments again.

The 48xx cards were tested to run up to 100c with no issues but 3850... I don't think they can handle so high temperature on that architecture, the... what's the word.. how many nanometers they're made on, the fabrication process they're made.

[gilly1984]

Re: Furmark and prime, same time, burning smell.

Are you sure? The smell seems like it is coming from the power supply.

If it is the gpu then i will use my onboard graphics, its plenty for what i use my computer for.

Shall i video my pc self destruct? With the smell that was coming from it something has to give.

Oh, and it does not smell like plastic burning, it is definitely circuit board kinda smell.

The smell starts before the gpu gets to even 90c, I bet its the psu, I have never even checked whether it was a good psu, all i seen was 500w and thought it was good. But thats before i registered on this site. I may take it apart and put some pics up.

[mockingbird]

Re: Furmark and prime, same time, burning smell.

Be careful, Furmark did actually kill video cards in the past...

If a card is unable to perform with a certain piece of software, why would you blame the software and not the card? It's not like Futuremark is accessing fan controls and spinning the fans down during the test. In fact, Futurmark is probably much better at testing stability than it is at benchmarking anything.

The 48xx cards were tested to run up to 100c with no issues

No. The 48xx OEM design is faulty. The VRMs don't last long. XFX makes a custom 4890 that runs a lot cooler and is reliable (Except for the lousy fan they use), but it doesn't clock as well because of the analog VRM.

[gilly1984]

Re: Furmark and prime, same time, burning smell.

Not an argument, just wanting to know what that smell is. I can video it if needed.

I will take the side off my pc and run both programs until something starts smoking if needed?

[mariushm]

Re: Furmark and prime, same time, burning smell.

I have the stock, default, oem design Sapphire 4850 so I should know what I'm saying.

When it was tested, AMD kepts saying they designed it in such a way that it would be stable at up to 100c - at that point it starts to throttle itself and raise the fan speed a bit.

The fan speed was kept intentionally low... I tested with lots of games when I bought it, the temperature went up to 85c and the card didn't even bother to go about 40-50% fan speed.

A few months after I bought it, I modded it and installed Accellero S1 Rev 2 on it so now it's passively cooled, no fans - right now with the heatsink and pipes probably loaded with dust, my card idles at 36c - I think it was 32c with my previous power supply but now the X-650 is also passively cooled when idle (below ~ 170w load) so the video card is affected by the hot case (acts as heatsink for the psu)

In fact, I actually made videos with the installation of the Accellero S1 Rev 2 and if you watch the end of part 2, you'll see how nice of a cooling system the OEM heatsink+fan was:

http://www.youtube.com/watch?v=y8pcK...ure=plpp_video
http://www.youtube.com/watch?v=sMKUH...ure=plpp_video

The VRM may very well be poor, but for normal usage and a bit of overclocking it was fine... furmark however is not normal usage.

By all means, gilly, pop the cover off and inspect it and look at it while you do those tests. You could actually have more problems, like the 4pin or 8 pin cpu connector melting up at the contact point with the motherboard.

It happened to me due to buying a cheap extending cable with thin diameter and poor pins, with a previous power supply that didn't have cables as long as my current Seasonic.

ps. you might also have some cables resting on the fan heatsink and those cause the smell... who knows, it doesn't take a lot of time to open the case and check everything.

[gilly1984]

Re: Furmark and prime, same time, burning smell.

Whoa whoa lol.

I just wanted to know that smell lol, dont you guys argue. I have a poor mans pc, the psu is from my previous pc, which was an intel e2180, but then i got this amd mobo for free so now i am usind the psu on this.

Just checked and the psu is a "EZcool ATX-500 JSP", So its shit lol.

The 3850 gpu is fine, 115c lol.

And yes, the fan on the gpu didnt ramp up til nearly 90c so mariushm is spot on with speeds.

[mockingbird]

Re: Furmark and prime, same time, burning smell.

The VRM may very well be poor, but for normal usage and a bit of overclocking it was fine... furmark however is not normal usage.

Ridiculous. People mine bitcoins and also use these cards exclusively for OpenCL (Decryption) 24/7, which stresses the card just as much as Futuremark I'm sure.

I personally have the non-reference 4890 I bought as "broken" for $20. Thanks to the lifetime warranty, XFX sent me a replacement fan (Well, the whole heatsink/fan actually), and it is as good as new. Far, far faster than the 2900XT it replaced.

[mariushm]

Re: Furmark and prime, same time, burning smell.

4890 is a different monster compared to 4850 or the 3850 gilly has. The 4890 has 2 x 6pin pci express connectors and consumes quite a lot of power compared to 4850.
Hence the VRM is a bit better than the one on 4850.

At the time 4850 appeared, there were very few OpenCL applications.. i think the first app I "Tested" that actually used OpenCL was Seti at Home screensaver or some other type of "let us borrow your cpu and gpu while screensaver runs"
Bitcoin only appeared a bit later.

And actually, no, Bitcoin and OpenCL programs don't really consume as much as what Furmark or other testing programs can consume. They don't load GB of textures, don't use vertex and pixel shaders by the ton, they don't enable so many parts of the gpu at the same time.

I know by the time they were starting to go out of the market, the Radeon 4830 cards started to become popular, as "best bang for buck" for Bitcoin.. being single slot you could put 6-8 cards in a single pc (using pci-express x16 to 4 x x4 or 2x8 extenders) and do bitcoins. The point is it took some time for the whole OpenCL craze to start.

[gilly1984]

Re: Furmark and prime, same time, burning smell.

See above MB

I like the smell, but everyone else thinks the house is burning down.

Shall i try and blow it up?

BTW, The above psu is powering only a;

Asus M2A-VM mobo
AMD 9000+ (Dual core)
ATI 3850 GPU
And a side order of a pioneer dvd/rw.

Nothing else, except 2 hdd.

[gilly1984]

Re: Furmark and prime, same time, burning smell.

Guys, please do not argue.

Both good guys on here, so please just agree on your own findings.

[c_hegge]

Re: Furmark and prime, same time, burning smell.

Can you post a pic of the PSU's internals? I'd say it's just a 250 Watter with a 500W sticker. I know the smell you're talking about (I think) and it often comes from PSUs on the load tester just before they go kaboom.

[gilly1984]

Re: Furmark and prime, same time, burning smell.

Yh, i will strip it today and get some pics up.

I really want to blow it up though.

I watched a vid that "aussie50" did and it looked like an exhaust from a car lol.

Here is that vid, skip the ad.

http://www.youtube.com/watch?v=xbJk5uAg4g4&feature=plcp

[mcdaydavies]

Re: Furmark and prime, same time, burning smell.

I watch Aussie50 all the time lol, great youtuber.

[gilly1984]

Re: Furmark and prime, same time, burning smell.

G'Day folks lol.

Him, Ashens and PhotonicInduction are the best.

[Behemot]

Re: Furmark and prime, same time, burning smell.

I bet you have bad cooler and bad airflow. Basically, people should be shot for not using at least one 120mm output fan. I have 8 fans in my computer together.

As for the supply, I would say it's one of those Partis sells here as EuroCase. They are, well, hwo to say it…each generation is difference. Have 550W version and with all the capacitor upgrades, I think it can do 450 W combined. I have tortured it with Athlon 4800+ (Toledo!!) and HD 3870 and it survived. Tortured it with Brisbane and X1950 and it survived. It's one of the better ones, but still, not so great, not much protections, not fantastic efficiency.

If you pull all your power through that PSU eithout any other fan, here is it: you deserve it to burn down. Is that enough for you to do something with that?

Show us pictures of your whole case insides and prep some money for cooling.

[ratdude747]

Re: Furmark and prime, same time, burning smell.

You have bad cooler and bad airflow. Basically, people should be shot for not using at least one 120mm output fan. I have 8 fans in my computer together.

None of my current computers use any 120mm fans... 92mm at the largest. Please don't shoot me!

[Behemot]

Re: Furmark and prime, same time, burning smell.

None of my current computers use any 120mm fans... 92mm at the largest. Please don't shoot me!

If you have enough of them, you can subtitute 120mm fan, but still, bigger one does the same work quieter. But pulling as much as 250 W through PSU only or PSU+92mm only is stupidity, sorry to say, but that's just it.

[ratdude747]

Re: Furmark and prime, same time, burning smell.

If you have enough of them, you can subtitute 120mm fan, but still, bigger one does the same work quieter. But pulling as much as 250 W through PSU only or PSU+92mm only is stupidity, sorry to say, but that's just it.

ok, by those standards (counting PSU fans) I lied.
There also is a 92mm case fan and each cpu cooler (it's twin xeons, 3.2ghz Gallatin) has a 60mm fan on it. Why? because that's what my case allows for. there is a thread with pics.

The PSU it used to have had two 80mm fans... that's now in my HTPC, which has a spot for an 80mm intake which until I get an 80mm PWM fan, is unpopulated. It has a copper cored stock 775 cooler (Pentium dual core, 1.8ghz). I may not populate the fan slot since it never got very hot anyway.

Furthermore, unless we are talking an OC'd gaming rig or a really hot system (pentium D's and their Xeon sibings come to mind), you don't need much in the way of case fans. Often times, an 80mm plus a decent cooler (like the stock one) will do just fine.

None of this applies to USFF boxes or imac G5's, since they are so cramped that air can't flow, period.

[Behemot]

Re: Furmark and prime, same time, burning smell.

That is not true. I just got 9800 GT + Q8400 system under my table for testing. PSU is pushing air arround 50 °C, both VGA and CPU have over 70 °C and there is CNPS7000 in full copper on that processor. This configuration is better low-end by todays standards.

There is 120mm outtake, but I am afraid on 5 V it has too low airflow. Also the like a "grill" in the case I would rather cut off, there is more steel than holes in that.

I guess with all those tiny high-RPM fans you never met a thing called silence, right? And who the hell with at least a bit of sense uses bloody Prescott Xeons these days? So sorry man, but you what you have is insanity, I would not advise anybody about cooling being you

I have twice the compute power as you in the same power envelope (Phenom II B50@3,5 GHz) and probably lower noise. The most noisy things in my computer are the three 15k Enterprise SCSi drives.