15 réponses à ce sujet

[Lo-Pan]

my GPU constitute overheating?  I just installed NVMonitor because I was curious how hot my laptop was getting when playing games (DA:O) in particular because I was getting a 100% CPU usage on my task manager process tree for DA:O.

Please advise.

Thanks,

[Matthew Young CT]

Depends on the card. Usually 100 is about the limit. That's for desktops though, not sure about laptops. Presumably they don't get nearly that hot..

Modifié par Matthew Young CT, 26 novembre 2009 - 05:36 .

[Lo-Pan]

ahh, ok, im running about 70*C alt tabbed out of DA:O. did a bit of research and seems like what you are saying is in line with other tech forums. thanks

[GN-Lelldorianx]

70*C is boiling. If you use your laptop as a 'portable desktop' when gaming, I highly recommend getting a cooling tablet to place it on top of. These can be found in most department stores (Staples, Office Depot, Best Buy). It is basically a pad with 2x 120mm fans in it, and when properly architected, they draft air in from underneath them and channel them into the base of the laptop (often where vents and exhaust are located).

Try using the SpeedFan (freeware) utility to get a good estimate on your CPU temps. If you have heatprobes on your CPU (most newer chipsets do), it will read from those and report the numbers. If you don't, speedfan makes a decent guess at the temps based on your fan speed.

[Matthew Young CT]

70C isn't boiling for a GPU. Nor really for a CPU.

[gizzt]

70C is fine. <80C is safe for GPU, >90C is danger zone

[GN-Lelldorianx]

70c is pretty hot, mine stays at around 60c under stress, but that's because I have proper cooling. Thermals have long been up for debate. At higher temperatures, impedance increases, thus increasing the chance for undesired crosstalk and decreasing the clockspeeds of the GPU to compensate for the temperature. Even with PCI-E this is a problem, granted the number of traces has decreased significantly and the number of transistors has increased, thermal noise (or nyquist noise, as you may know it) is something best avoided. I still recommend my above post.
We don't want a slower GPU as a result of higher impedance

Modifié par GN-Lelldorianx, 26 novembre 2009 - 03:53 .

[Mt.Seleya]

Wow, I read a couple of times that other people's gpu stays at around 60°C under stress. My 8800gt has 60-62°C idle (desktop) and up to 87°C when playing. But it's the same with other games, not only DA:O.

A while ago I bought a spacious Enermax case, because I was concerned about temperatures and it was terribly cramped in the standard case, the way I had to fit all my stuff in it was quite... adventurous. Now I have open space in the case and two more case ventilators (yes, one goes in and one out, in case you wonder *g*).

So I thought I am pretty cool now, but others seem to be way cooler. Now I'm concerned again. I'm also concerned about the 100% cpu usage. Do I need to be concerned or am I safe?

[Lo-Pan]

Thanks Dorian. I can tell you know a thing or two (because you are talking in similar terms to engineers I work with regarding electronics). I'll look into a cooling tablet. What are some good numbers for CPU temperatures? I have NVMonitor set to watch both cores.

[Titius.Vibius]

Mines both at 61°C when playing DAO, and CPU 100% everytime. Caution by the way, after playing DAO leave your PC or laptop to cool down say 45°C, do not turn it off immediately after playing because this will leave you with a hot cpu and gpu that have a potential to damage your mainboard and gpu boards because of heat. Melted XBOX anyone?

[Mt.Seleya]

Sound advice. I always wait for the temperatures to drop to normal idle temps and in addition my beQuiet! power supply keeps cooling for another 3 minutes or so after shutdown. But I still never get as cool as 45°C (cpu yes, gpu no). I didn't connect the case fans to be controlled by the ps, I figured they would be more quiet, but not efficient enough.



So I still wonder why my gpu is as hot in idle than other people's while playing. And it's not a faulty read, either. The fan on the card gets quite loud. But nothing's overclocked. Lots of fans, lots of space in the case... I'm at a loss here.

[SweDragon]

Did you clean out dust from the heatsink of your GPU when you rebuilt your case?



Since you have an 8800 I figure it is a couple of years old, and would have time to get dirty.



Otherwise I don't think the temperatures are exceptional. I spend alot of time reading hardware reviews, it seems fine for a couple of years old card. New cards have better idle temperature, but it seems all recent powerful GFX cards get hot while running.



Check out http://www.anandtech...spx?i=3650&p=13 to find some different cards temps, including your chip.

[AdrianC25]

my laptop gets scorching hot playing this game (always at 100 CPU usage when its on ... wierd) and the CPU eventually makes its way to the 95-98c range with the GPU at around 63c max and the chipset and mem maxing at 70 and 73c this with the fans on max sitting on a laptop cooler.



Running a dell XPS 1730 3.4Ghz core2 extreme and a pair of 8700 in SLI, crysis never got it anywhere near this hot.

[Mt.Seleya]

@SweDragon: Yes, I usually clean my fans when I upen up the case and the card had a good ****** (eh..) when I rebuilt the case. A general spring clean is scheduled for Monday, though. Let's see if that'll help.

Thanks for the link, it's very informative and reassuring.

In the meantime I read up on the 100% cpu usage on dualcore cpu's and I understand that it is inevitable because of the number of threads. But I have no problems with other applications when alt tabbing out.

@Draetor: Your informations are apprechiated, as well.
I believe my gpu fan has only two settings, idle and load, at least it sounds like that. I didn't change the default handling of the fan.

Thanks all around and good luck for those who still look for a solution to their heat problems (right now my head has a heat problem because of the disastrous decisions I make in my game *g*).

Modifié par Mt.Seleya, 27 novembre 2009 - 11:06 .