Extremely high HD 3850 temps

diddle · Feb 26, 2009, 12:54 PM

I currently switched over to a new case with two 230 mm fans and two 120mm fans and my GPU still runs at nearly 100C while running the furbenchmark test.
I ghetto modded a 80mm fan to be blowing air into the fan so that it would get increased airflow but it doesn't seem to be making much of a difference. Even with the fan speed at 100% the temps are still insanely high. I am not overclocked.
Is there any thing I can do to decrease my temperatures?

Hybrid_theory · Feb 26, 2009, 02:53 PM

you could get a 3rd party cooler, but stock should be able to keep it below 90 under load imo. You could dismantle the heatsink, and reapply paste and put it back on. Maybe it was a bad assembly job. Be careful if you choose to do this, i hear paste spreading on the gpu isnt as simple due to no heat spreader.

TRIPTEX_CAN · Feb 26, 2009, 03:05 PM

You can try Hybrid's suggestion. It should help if you use a quality thermal paste like AS5 or MX-2. You should also make sure you dont have any lint or dust blocking the fan of heat sync on the card.

I think it's your PSU (http://www.vgaforum.com/showthread.php?t=15180).

Now I don't want to argue about the quality of your PSU, the rated values, or anything like that. I'm just making an observation based on the fact that a ridiculous amount of airflow isnt cooling your card.

diddle · Feb 26, 2009, 03:28 PM

Well, It seems to be just furbenchmark though.
Been playing some games with gpuz in the background monitoring temperatures and it seems that the temps in game doesn't go above 80C, even at 100% load, which is perfectly normal for video cards as I've read.
Is it just fur benchmark that could be causing the very high temperatures?

TRIPTEX_CAN · Feb 26, 2009, 03:36 PM

Furmark is designed to stress your GPU to the max. With all those fans blowing on the card 80c still sounds high but not dangerous.

_jM · Feb 26, 2009, 04:23 PM

These newer cards are designed to run well past 100c... In your case.. there does seem to be something fishy here. you said that you have plenty of airflow in your PC, and the 3850's really don't run that high. My 3850 never reached above 60c on full load with an OC on it and stock cooling. If I was you I would buy a can of duster (or any brand on compressed air) and take the card out of the PC. Remove the heat-sink and clean that sucker out as best as you can. Remove the original thermal paste and re-apply some higher-end thermal paste and put her back together. That should help.. at least enough to see a decrease in temperatures. Good luck

sweeper · Feb 26, 2009, 04:30 PM

That's a huge amount of air flow in that system. I'm just wondering if the stock HSF on your GPU isn't making good contact with your GPU. I had to replace my stock GPU cooler on my 3850 due to high temps under load but I don't ever remember it reaching over 100c though. Furmark is dedicated to benching the GPU (Opengl) extension. It really doesn't utilize the CPU much. It's dedicated for GPU benchmarking. Also I noticed you have your card overclocked. IMO, I would check your card for any dust build up or check and see if your fan is bumping up to 100% when the temps start to climb. Your fan may run up to only 65-70% which would bring up your GPU temp. Use Riva Tuner to see if your fan speed is operating properly. If need be, adjust it to 100% and run Furmark and see where your temp is.

newtekie1 · Feb 26, 2009, 04:49 PM

100C on the 4850 during Furmark is normal from what I have seen. Furmark stresses the CPU harder than any normal gaming situation would, to the point of it actually damaging some of the ATi cards(there were stories on it right around the launch of the HD4850's). The stock coolers simply are not up to the task of cooling the GPU for this benchmark. ATi even went as far as diliberately retarding performance in FurMark to lower the stress on the GPU(there were also stories about this a while back).

Edit: Read here about the overheating issues on the HD4850's. Which isn't really going to help you that much, as right after I posed this I realized you were talking about an HD3850 and not an HD4850...

Though if you are using the stock single slot cooler on your HD3850, those were known to be rather poor also, which would probably explain the high temps, the HD3850 just isn't crashing due to the high temps like the HD4850's did.

spearman914 · Feb 26, 2009, 04:51 PM

U should see what happens with furmark 4870x2. I got 110C once.

TRIPTEX_CAN · Feb 26, 2009, 04:53 PM

Quote:

Originally Posted by spearman914

U should see what happens with furmark 4870x2. I got 110C once.

How long did you leave it running?

spearman914 · Feb 26, 2009, 04:57 PM

Quote:

Originally Posted by TRIPTEX_MTL

How long did you leave it running?

5 minutes. Then it auto restart.

diddle · Feb 26, 2009, 05:03 PM

Quote:

Originally Posted by newtekie1

100C on the 4850 during Furmark is normal from what I have seen. Furmark stresses the CPU harder than any normal gaming situation would, to the point of it actually damaging some of the ATi cards(there were stories on it right around the launch of the HD4850's). The stock coolers simply are not up to the task of cooling the GPU for this benchmark. ATi even went as far as diliberately retarding performance in FurMark to lower the stress on the GPU(there were also stories about this a while back).

Edit: Read here about the overheating issues on the HD4850's. Which isn't really going to help you that much, as right after I posed this I realized you were talking about an HD3850 and not an HD4850...

Though if you are using the stock single slot cooler on your HD3850, those were known to be rather poor also, which would probably explain the high temps, the HD3850 just isn't crashing due to the high temps like the HD4850's did.

Well, I'll go out and buy some thermal paste this weekend and make a project of reapplying my GPU heatsink as well as cleaning it off.
It doesn't get much over 80C when gaming even OC'd so it must just be Furbenchmark.
I don't have much room under my card for a big heatsink, I have a low profile wireless network card so it can get airflow but I doubt I'll be able to install a giant aftermarket heatsink.

_jM · Feb 26, 2009, 11:26 PM

Quote:

Originally Posted by spearman914

U should see what happens with furmark 4870x2. I got 110C once.

Shit thats nothing, when AMD OC the Phenom 2 to 6ghz and broke the 3DMark 06 record, the tem on the 4870X2 was reading 127c. Look at this...

aj28 · Feb 27, 2009, 04:32 AM

Quote:

Originally Posted by _jM

Shit thats nothing, when AMD OC the Phenom 2 to 6ghz and broke the 3DMark 06 record, the tem on the 4870X2 was reading 127c. Look at this...

WTF @ 25% fan speed?
(Well there's your problem!!!)

sneekypeet · Feb 27, 2009, 04:44 AM

Those temps and fanspeeds are most likely a misread due to the stock cooler being removed. Im not sure 900MHz core is possible on air, but I could be way off.

sweeper · Feb 27, 2009, 10:41 AM

I think those fan speeds are incorrect as you stated. They froze pretty much everything on that PC esp. the CPU. But it could be correct considering when they froze the CPU it pretty much froze everything else on the MB and connecte to the MB so the fans may not have needed to run at 100% or thought they didn't need to being froze. LOL.

Thrackan · Feb 27, 2009, 11:53 AM

My vote is on an incorrectly mounted heatsink or a bad airflow design.

Feb 26, 2009, 12:54 PM	#1
diddle Join Date: May 2008 Posts: 72 (0.04/day) Thanks: 28 Thanked 1 Time in 1 Post System Specs	Extremely high HD 3850 temps I currently switched over to a new case with two 230 mm fans and two 120mm fans and my GPU still runs at nearly 100C while running the furbenchmark test. I ghetto modded a 80mm fan to be blowing air into the fan so that it would get increased airflow but it doesn't seem to be making much of a difference. Even with the fan speed at 100% the temps are still insanely high. I am not overclocked. Is there any thing I can do to decrease my temperatures?

System Name:	Diddulator
Processor:	AMD x2 5000+ @ 3.12 ghz, 1.280V
Motherboard:	Biostar TF720 A2+ (fail..)
Cooling:	Stock Heatsink, 2 x 200mm fans, 2x 120mm fans
Memory:	2x1 GB Gskill PC2-6400 @ 445.7mhz
Video Card:	Sapphire 3850 512mb stock :669/829 running at : 776/1008
Hard Disk:	500 Gig IDE
Optical Drive:	Lite-on IDE combo drive
CRT/LCD Model:	17 inch LCD @ 1280x1024
Case:	Thermaltake
Sound Card:	Sound Blaster Live 5.1
PSU:	Raidmax RX-530SS 530watt 37amp rail
Software:	Windows XP x86
Benchmarks:	3DMarks06 - 10200

Feb 26, 2009, 02:53 PM	#2
Hybrid_theory Join Date: Mar 2007 Location: ontario canada Posts: 1,691 (0.75/day) Thanks: 112 Thanked 164 Times in 146 Posts System Specs	you could get a 3rd party cooler, but stock should be able to keep it below 90 under load imo. You could dismantle the heatsink, and reapply paste and put it back on. Maybe it was a bad assembly job. Be careful if you choose to do this, i hear paste spreading on the gpu isnt as simple due to no heat spreader. __________________ xboxlive: Hybrid461 PSN: ryan461 Steam name: Hybrid_theoryTPU.

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Feb 26, 2009, 03:05 PM	#3
TRIPTEX_CAN Join Date: Feb 2008 Location: BC.CAN Posts: 2,342 (1.22/day) Thanks: 805 Thanked 726 Times in 554 Posts System Specs	You can try Hybrid's suggestion. It should help if you use a quality thermal paste like AS5 or MX-2. You should also make sure you dont have any lint or dust blocking the fan of heat sync on the card. I think it's your PSU (http://www.vgaforum.com/showthread.php?t=15180). Now I don't want to argue about the quality of your PSU, the rated values, or anything like that. I'm just making an observation based on the fact that a ridiculous amount of airflow isnt cooling your card. __________________ “come to canada and I'll put my maple syrup in your mouth”

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Feb 26, 2009, 03:28 PM	#4
diddle Join Date: May 2008 Posts: 72 (0.04/day) Thanks: 28 Thanked 1 Time in 1 Post System Specs	Well, It seems to be just furbenchmark though. Been playing some games with gpuz in the background monitoring temperatures and it seems that the temps in game doesn't go above 80C, even at 100% load, which is perfectly normal for video cards as I've read. Is it just fur benchmark that could be causing the very high temperatures?

Feb 26, 2009, 03:36 PM	#5
TRIPTEX_CAN Join Date: Feb 2008 Location: BC.CAN Posts: 2,342 (1.22/day) Thanks: 805 Thanked 726 Times in 554 Posts System Specs	Furmark is designed to stress your GPU to the max. With all those fans blowing on the card 80c still sounds high but not dangerous. __________________ “come to canada and I'll put my maple syrup in your mouth”

Feb 26, 2009, 04:23 PM	#6
_jM Join Date: Jun 2008 Location: Ocala,FL Posts: 1,076 (0.59/day) Thanks: 309 Thanked 174 Times in 157 Posts System Specs	These newer cards are designed to run well past 100c... In your case.. there does seem to be something fishy here. you said that you have plenty of airflow in your PC, and the 3850's really don't run that high. My 3850 never reached above 60c on full load with an OC on it and stock cooling. If I was you I would buy a can of duster (or any brand on compressed air) and take the card out of the PC. Remove the heat-sink and clean that sucker out as best as you can. Remove the original thermal paste and re-apply some higher-end thermal paste and put her back together. That should help.. at least enough to see a decrease in temperatures. Good luck __________________

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Feb 26, 2009, 04:30 PM	#7
sweeper Join Date: Dec 2004 Location: SW, Ohio Posts: 753 (0.25/day) Thanks: 146 Thanked 36 Times in 36 Posts System Specs	That's a huge amount of air flow in that system. I'm just wondering if the stock HSF on your GPU isn't making good contact with your GPU. I had to replace my stock GPU cooler on my 3850 due to high temps under load but I don't ever remember it reaching over 100c though. Furmark is dedicated to benching the GPU (Opengl) extension. It really doesn't utilize the CPU much. It's dedicated for GPU benchmarking. Also I noticed you have your card overclocked. IMO, I would check your card for any dust build up or check and see if your fan is bumping up to 100% when the temps start to climb. Your fan may run up to only 65-70% which would bring up your GPU temp. Use Riva Tuner to see if your fan speed is operating properly. If need be, adjust it to 100% and run Furmark and see where your temp is. __________________

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Feb 26, 2009, 04:49 PM	#8
newtekie1 Semi-Retired Folder Join Date: Nov 2005 Location: Indiana Posts: 17,741 (6.49/day) Thanks: 780 Thanked 5,112 Times in 3,703 Posts System Specs	100C on the 4850 during Furmark is normal from what I have seen. Furmark stresses the CPU harder than any normal gaming situation would, to the point of it actually damaging some of the ATi cards(there were stories on it right around the launch of the HD4850's). The stock coolers simply are not up to the task of cooling the GPU for this benchmark. ATi even went as far as diliberately retarding performance in FurMark to lower the stress on the GPU(there were also stories about this a while back). Edit: Read here about the overheating issues on the HD4850's. Which isn't really going to help you that much, as right after I posed this I realized you were talking about an HD3850 and not an HD4850... Though if you are using the stock single slot cooler on your HD3850, those were known to be rather poor also, which would probably explain the high temps, the HD3850 just isn't crashing due to the high temps like the HD4850's did. __________________ Rig1: System Specs. Rig2: A8-5600K@4.4GHz / AsRock FM2A75 Pro4 / 8GB Corsair DDR3-1600 9-9-9-24 / HD7560D / Samsung DVD-Burner / 1.5TB WD Green + 3x3TB WD RED in RAID5 Rig3: Athlon X2 4200+ / M4A79 Deluxe / 4GB G.Skill Pi DDR2-800 4-4-4-12 / GT430 / Sony DVD-Burner / 500GB WD Rig4: Phenom II x6 1605T @ 3.6GHz / Asus M5A99X Evo / 8GB PNY DDR3-1600 9-9-9 / GTX470 & GTX470 / Samsung DVD-Burner / 1.5TB Seagate Last edited by newtekie1; Feb 26, 2009 at 04:55 PM.

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Feb 26, 2009, 04:51 PM	#9
spearman914 Join Date: Apr 2008 Location: Brooklyn, New York 11223 Posts: 3,000 (1.61/day) Thanks: 339 Thanked 510 Times in 482 Posts System Specs	U should see what happens with furmark 4870x2. I got 110C once. __________________ .................................................. .. “Originally Posted by mlee49 So pain level on a 1 to 10 scale, 10 being having a wart removed on your butthole with pliers.”

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Feb 27, 2009, 04:44 AM	#15
sneekypeet Unpaid Babysitter Join Date: Apr 2006 Posts: 18,983 (7.32/day) Thanks: 3,033 Thanked 5,481 Times in 3,947 Posts System Specs	Those temps and fanspeeds are most likely a misread due to the stock cooler being removed. Im not sure 900MHz core is possible on air, but I could be way off. __________________ Hers: ASUS Maximus V Gene / i7 3770K / Swiftech H220 / 4X8GB Corsair Dominators / ASUS GTX660 / Corsair AX-760 / Windows 7 64bit / Fractal Design ARC Midi R2 Test: Gigabyte Z68X-UD4-B3 / i7 2600K / A lot Of Coolers / Ripjaws Currently / HIS HD7950 IceQ Turbo / Silverstone SST-ST85F-G / Windows 7 64bit / InWin D-Frame Limited Edition

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Feb 27, 2009, 10:41 AM	#16
sweeper Join Date: Dec 2004 Location: SW, Ohio Posts: 753 (0.25/day) Thanks: 146 Thanked 36 Times in 36 Posts System Specs	I think those fan speeds are incorrect as you stated. They froze pretty much everything on that PC esp. the CPU. But it could be correct considering when they froze the CPU it pretty much froze everything else on the MB and connecte to the MB so the fans may not have needed to run at 100% or thought they didn't need to being froze. LOL. __________________

Feb 27, 2009, 11:53 AM	#17
Thrackan Join Date: Oct 2008 Location: The Netherlands Posts: 3,159 (1.88/day) Thanks: 234 Thanked 652 Times in 533 Posts System Specs	My vote is on an incorrectly mounted heatsink or a bad airflow design. __________________ Play League of Legends! Join the Ghetto modders club Put your Steam games on multiple partitions

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