Gigabyte 6600GT Very Hot

Ashurbanapli

Junior Member
May 19, 2005
9
0
0
Rig:

CPU: 3500+ Athalon 64
Mobo: A8N-SLI Deluxe
RAM: 1 gig Samsung DDR400
Video: Gigabyte 6600GT Turboforce 128 PCI-E (NX66T128VP)
HDD: Maxtor 160 SATA
Case: Thermaltake Xaser III Viking with Thermaltake 420W PSU

Drivers:
Direct-X 9.0c
nVidia 71.89 display drivers
nForce4 Standalone Kit 6.53


Description:

Since the last patch in WoW, I'm having some very serious texture tearing problems. Never had these problems before the patch, but suddenly torn textures appear in explosion type patterns all over the screen (sometimes these torn textures have strings of text within them). So, I post about it in WoW tech forums.

Someone mentions it's heat related -- so I start monitoring my heat levels (under the nVidia driver tab in display properties). Now that I am looking, I find that my usual temp is never less than 100 degrees C. Typically its 110+ just standing around in the game, without really doing anything. When I actually do play the game, it spikes at 125+ (highest I have seen it go is around 133). Needless to say, it's when I have these high temps that I get the tearing. A friend bought the exact same rig (that I built) and his normal temp is about 80 degrees C after hours of playing. I find that these temps can peak very quickly from cool to really hot.

Some days my temp doesn't peak however, and I can play normally all night without too many problems. When the tearing appears I keep playing and the tearing clears itself and comes back infrequently. Some days it peaks really high, like today -- was getting over 120+ C just by having WoW running in Darnassus. Our rigs are less than a month old.

I've tried underclocking my RAM, changing the 1T/2T, changing the Hypertransport rate in my BIOS, as well as toggling all in-game shaders for texturing, and changing the texturing multisampling rate. If I fool with the various settings (some of which reduce graphical performance, some of which boost it) I can produce between 60+ and ~80 FPS. I can't relate these settings back to the relative duration of my play, because I don't ah heck around with them on a daily basis -- so this can't be to blame (i.e., less playing time due to higher FPS').

Putting my case fans up to full blast sometimes helps, sometimes doesn't. The card in question doesn't have a core fan, but it does have two giant heatsinks with a bridge connecting them, and they are uncomfortable to the touch when checked while reading high temp (so I know they aren't unseated). The card comes overclocked out of the box to come close to matching the 6800GT benchmarks, which is why I bought the damn thing (then underclock it dummy! Right well, I haven't overclocked it since I got it -- this is occurring with bare minimum settings).

My board sensor never passes 40 degrees. I have checked the CPU temps in Sandra and they are low as a general rule as well. I've tried popping off the side of my case, but this doesn't seem to help much (about as much as turning the case fans up).

I should also mention that changing nForce or video drivers to earlier versions tends to produce hard or soft lockups instead of the tearing, requiring either a hard boot or causing an immediate crash to desktop with a nebulous error message. Tried running in Open GL mode once too, but that eventually produced a massive tear that hard locked the machine. All DX Diag tests complete normally.

In short, I'm at a loss. I have no idea what my previous temps were, since I never checked them prior to experiencing this texturing problem (that said I know these temps are ridiculously high, I'm just wondering why all of a sudden).

Any ideas? Think I got a bum card? (if so why is it acting up post-patch? It's almost as if a switch has been thrown from "great" to "crap". Perhaps the patch changed something in the way textures are drawn that is causing this error? I suggest this because there are many other people over at WoW tech support with similiar problems. Some experience total texture drawing failure of e.g., water, sky or ground, or have transparency of background doodads. Some see all textures totally garbled or fuzzy, while other see patches of squares that don't match the background. However, WoW isn't singularly to blame -- the tearing also occurs in HL2. I'm also aware a lot of people over at nVidia hardware forums are experiencing the texture fuzziness with 6600-6800GTs).

My error looks exactly like the screenie of the OP in this thread:
http://forums.nvidia.com/index.php?showtopic=4696

...but more severe, with four times as many "rays." I find it difficult to capture the "rays" of garbled texture in screenies, as taking the screenie totally clears the effect for a short while.

So -- does the card get skipped along the pavement in the general direction of Gigabyte's mailbox? ;)


Thanks for any ideas,
Ashur
 

Emultra

Golden Member
Jul 6, 2002
1,166
0
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Have you read anything about the Gigabytes in general, that would suggest them having heat problems?

Though from what I've heard, all the 6600GT brands are good. My own ASUS 6600GT runs at 45-46C idle.
 

Ashurbanapli

Junior Member
May 19, 2005
9
0
0
No -- despite the fact that they don't have a core fan (unusual for a 6600GT) the reviews I read on the card before I bought it mentioned that the dual heatsinks were more than sufficient...

Fearing I've got a bum card. Strange that it would perform flawlessly and then suddenly temp-flake out tho.

-Ashur
 

Ashurbanapli

Junior Member
May 19, 2005
9
0
0
Possibly, but I've been looking for a more practical explanation before I start taking the card apart. My next step is to reseat the card and then the heatsinks, but I always try to consult those more in-the-know than I before I start with the more drastic troubleshooting. :D

Cheers,
-Ashur
 

Emultra

Golden Member
Jul 6, 2002
1,166
0
0
Then I am most certainly not your guy. :D

*Sits quietly and awaits the presence of the hardware wise better-knowledged*

;)

I'm learnin'...
 

Tanclearas

Senior member
May 10, 2002
345
0
71
I have the same card, and experience the same temps as your friend. Generally top out between 85 and 90C. At idle, it is normally between 50 and 55C. From my experience, both at idle and under load, this is roughly 15C higher than a standard 6600GT with a fan.

A couple of things.

When you're playing, does the heatsink on the video card get very warm/hot? It should (unless you have VERY good air flow). If it's not, then the GPU is not transferring its heat properly, and the heatsink is likely not sitting properly.

Make sure your case has good air flow. The card doesn't have a fan, but still relies on some air moving through the case.
 

Ashurbanapli

Junior Member
May 19, 2005
9
0
0
The card idles in the OS at around 75-80 degrees in 2D mode at 300 MHz.

When reading high temp in 3D mode at 500 MHz, the heatsinks are uncomfortable and can't be touched for long -- they are definitely channeling the heat.

Still, my temp gets above 120 degrees C easily by playing 3D games. So, even tho the heatsinks are channeling, they are eaither seated improperly or the card is bad.

But, to return to the OP, this only started happening in the last week after at least 3 weeks flawless gaming. I was hoping someone had a practical solution I am missing...

Cheers,
-Ashur

 

mehmetmunur

Senior member
Jul 28, 2004
201
0
0
Let me be the first to mention the obvious, it is almost summer time. It is quite likely, that unles you are keeping your house/apartment the same temp as your house in winter time, your case temp will go up. The 6600GT has a thermal core slowdown threshold of 127 C, at least that is what mine says in the Temp Settings section.

So it might be safe to assume that, since temperatures rose recently by say 10-15 C, tearing is happening due to the change in seasons. You are more prone to it, becasue the card is not actively cooled. I might be wrong, but just a theory.

The most simple solution is to drill a hole on the window/side of the case and put a fan 80mm (90mm or even 120mm is better). If you do not feel like destroying your case like I did when I tried to drill into acrylic, then you can use a slot cooling fan.

I have even seen pictures of people building lego towers inside the case to put a fan right next to the video card without using any screws. Be creative...
 

fbrdphreak

Lifer
Apr 17, 2004
17,555
1
0
Let's start with troubleshooting.
Take the side of your case off and game. Any big change in temp?
Point a decent house fan at your video card w/the side off & game: any big change?

Continue with this to help isolate the specific issue.
Also don't be afraid to dive into disassembling the heatsink. Just go slow, step by step, remember where screws go, and DON'T torque the screws down too much; be gentle. Google for anyone else who has done the same thing you are
Good luck
 

ddogg

Golden Member
May 4, 2005
1,864
361
136
open ur case....try to make sure the air flow inside is as good as possible!! next remove the card and make sure the heatsinks are properly seated...
i would also advise u to get a new fan...Zalman VF700 ALCU! it should solve ur heat problems
 

hippotautamus

Senior member
Apr 10, 2005
292
0
0
WHile there's little doubt that it's overheating...130c? That card should be completely burnt out and non-functional at a temperature like that. x850s can only handle something like 95c before they fry..
 

adala

Junior Member
May 12, 2005
3
0
0
120-130c is not normal at all. AMD 64 chip temp runs about 70c before it goes into critical stage. (spec. states 70c is max temp) Think about it, boiling temp for water is at 100c.

I have the same gigabyte card and I used SpeedFan to read the temp. It gives me two temp. Remote and local. I am assuming the local is the chip itself and remote would be the ambient around the card.

At idle, it reads
local: 32
remote: 45

At full hour of WoW (everything high with 1280x1024) , it reads
local: 42
remote 55

Ofcourse, it all depends on the airflow of your case. I've built my pc with "silent" in mind. two 120mm exhaust fan front/back. PSU with 120mm fan. All three fans do not exceed 1200rpm. XP120 heatsink for AMD 3200+ without a fan (gasp!) CPUtemp is: idle at 32c and full load at 40c.

The hottest thing in my case is the nforce4 ultra NB, I have a stock gigabyte passive HS....

Even if the card's HS is hot, it doesn't mean it has full soild contact with the GPU. If you feel comfortable, you should take it apart and clean both sides, reapply AS.
But if it is indeed at 120c, the first thing you should improve is the overall air flow.



 

rise

Diamond Member
Dec 13, 2004
9,116
46
91
Originally posted by: adala

I have the same gigabyte card and I used SpeedFan to read the temp. It gives me two temp. Remote and local. I am assuming the local is the chip itself and remote would be the ambient around the card.

At idle, it reads
local: 32
remote: 45

At full hour of WoW (everything high with 1280x1024) , it reads
local: 42
remote 55
i think your assumption is wrong. a 6600gt at those temps would be phenomenal. you may be right but why not check in the control panel?