7900X and 7900XT - WTF so hot?

[Gangster]

Friend has just purchased 7900X, with a 7900XT and is inside a Corsair 2000D.

He's running 4K on COD, FPS are pretty good and he is impressed except for one thing... the heat?!

Is this normal? The amount of heat this thing is kicking out is insane. I've looked and the AMD software is reporting about 330W for the 7900XT and the CPU is pulling about 75W (this is from the AMD overlay).

Why on earth is it so hot?

Can't quite work it out, he has three fans as intakes.... I suspected the case but I don't even think its the case the components are so toasy its ridiculous - is this normal? I'm talking need to open the window hot after playing for an hour or so.

Seems ridiculous. He is really happy FPS wise, graphics wise just temp wise is bugging him... kicking out way too much heat.

Anyone have any solutions? I've had a look for him and seen that you can underclock the 7900XT but I wonder how that impacts FPS.... I have looked at Nvidia and they consume much less power but COD is his main game and apparently AMD works better with them and it has more VRAM.

Seriously considering suggesting to him to move to a 7900 for the CPU but I don't know about the graphics card.... thoughts please? I dont think changing from SFF to a large case would help... surely? Because it's the CPU and GFX dumping that amount of heat... surely it'd exhaust the same ridicilous amounts of heat into the room (and just keep the components cooler) by increasing case size?

Thanks all

 

[Gangster]

How hot are we talking?

In cod my 7800x3d and 7900xtx both run in the mid 60’s and that noticeably warms my study if the door is shut

7900XT is running around 75c, gpu mem temp 92 and gpu2 temp 57 (readings from AMD overlay).

Depends on the room volume too. In my old bedroom electronics heated up the room pretty quick but this new bedroom is massive with high ceiling . Bigger than some people's living room.

7900x and 7900xtz aren't exactly raspberry pi3 level of heat output either...

True, thats what made me think upgrading to a bigger case isn't going to be a solution as such. Are there any equivalent 7900XT graphic power friendly models? It seems mixed between 4070 variations and the 7900XT cost him £600 I think so anything close to that?

this may sound crazy........I downsized my case from a Corsair 2500X case which is a matx case, bit on the big size for matx, it had a 240mm radiator with 4 x 120mm push / pull fans mounted at the side, 3x140mm fans intake at the bottom, 1x120mm fan at the rear as exhaust and 3x120mm fans at the top push through a 360mm radiator exhaust, custom water cooling setup for CPU only.

Ive since extremely downsized to a Lian Li A3, 3x120mm fans intake at the bottom, 1x120mm fan intake at the rear, 3x120mm fans exhaust at the top push through a single 360mm radiator, custom water cooling for the CPU only and everything runs much cooler, its changed a little since this picyure, but not by much, just downsized the PSU and changed the coolant colour https://forums.overclockers.co.uk/threads/the-new-cases-gallery.18571712/post-37395807

The conclusion I came to, was sometimes a big case isnt so great, too much room for air to freely move around and no real direct air flow or cooling over any of the components.

Thanks for sharing that. Even thinking going to watercooling wouldn't do anything as it has to extract such amounts of heat it'd dump it into the room still wouldn't it.

Looking on the home smart meter it is pulling 700W when the AMD overlay is showing 330w ish for GPU and 75w ish.... not sure the overlay is correct as the smart meter is pretty accurate and nothing else is going on/off between measurements.

Thanks for the replies so far.

 

[Gangster]

Using libre hw monitor, my 7900xt hits around 575W max. Unsure if this is accurate or not though?

That sounds like what is happening to be honest. I can't work it out using Google it says TDP is 300W so I figured that it would be no more than that. Comparing to his old Xbox Series X (that says max wattage 315w) so for him he thought it might be like for like swap.

 

[Gangster]

found your problem

You thinking going down to 1440p would alter it much?

 

[Gangster]

Fine tune both CPU and GPU (Undervolt)

Have a more aggressive Fan Curve to keep Temps Lower.

Look at using a Frame Cap to reduce load on GPU, Cap to Monitor Refresh Rate.

All should help significantly, if he’s having issues during this time of the year then Summer will be unbearable.

This is what he is projecting. Where would the frame cap be, in each game he plays?

Monitor he has is 144hz and he is hitting around 120 on 4k best settings so he is really impressed just the heat dump is making it unbearable now.... let alone the summer.

Is 99% GPU Utilisation normal for playing a game? I never knew it'd hit so high.... back in the day I only remember GPU hitting that when running benchmark tests or stress tests which were not near actual gaming use (haven't gamed in years on PC myself so I am out of the loop).

 

[Gangster]

Yea 4K is a lot more GPU taxing than 1440p. FPS gamers tend to use 1080p for even faster reaction times.

You also don't want your GPU running at 100% load because that causes some latency (GPU is busy so frame has to wait).

You also don't want to be trying to run at the monitor's max hz as that causes stutter (e.g. on a 144hz monitor set an fps limit of 140hz in the GPU driver).

With the current system you could try setting an fps limit (e.g. 60fps) and lowering graphics settings to lower GPU usage to 50% to see how the room feels.

Ok so got him to switch from 4k to 1440p with same detail and utilisation stayed at 99%?

Will get him to try the 60fps limit suggestion but then seems a waste of a system then for him.... but will do the test.

 

[Gangster]

Ok so he has reduced the power limit -10 and capped the core clock and it has helped a bit but is still pulling a significant amount for the frames he is getting. Thanks for the help. He is now in a bit of a conflict whether to game 4k, drop to 1440p, change graphics card etc etc.