GPU Temps high in custom loop?

[trawetSluaP]

Hi all.

Am posting regarding the build in my signature.

Currently I have three radiators - one on top exhausting, one of bottom exhausting and one on front as an intake.

CPU is overclocked to 4.6GHz at 1.18v and temps reach around 70C when gaming and GPU reaches around 50C.

Some people have commented saying my GPU is getting a bit too hot for the cooling I have in place. Would you agree?

If so the only thing I can think that would improve temps is to remove the front radiator as it is currently exhausting the hot air into the case. Maybe the temps will be better if I take it out and allow the case fans to blow cool air into the case.

What would be your opinions?

Thanks,
Paul

 

[tolagarf]

Hi all.

Am posting regarding the build in my signature.

Currently I have three radiators - one on top exhausting, one of bottom exhausting and one on front as an intake.

CPU is overclocked to 4.6GHz at 1.18v and temps reach around 70C when gaming and GPU reaches around 50C.

Some people have commented saying my GPU is getting a bit too hot for the cooling I have in place. Would you agree?

If so the only thing I can think that would improve temps is to remove the front radiator as it is currently exhausting the hot air into the case. Maybe the temps will be better if I take it out and allow the case fans to blow cool air into the case.

What would be your opinions?

Thanks,
Paul

Your front radiator is probably the one getting the best cooling since you're blowing cool air directly onto it.

Your GPU temperatures seem pretty decent though, and sure you might be able to get them even lower, but I would say it depends a lot on your water block, pump speed, and head pressure, and what kind of fans you're using. As a general rule adding more radiator surface area than needed won't really lower the temperatures of your components, but give you the ability to run your fans at a lower speed.

 

[trawetSluaP]

Your front radiator is probably the one getting the best cooling since you're blowing cool air directly onto it.

Your GPU temperatures seem pretty decent though, and sure you might be able to get them even lower, but I would say it depends a lot on your water block, pump speed, and head pressure, and what kind of fans you're using. As a general rule adding more radiator surface area than needed won't really lower the temperatures of your components, but give you the ability to run your fans at a lower speed.

Good point, I had concentrated on the fact the other radiators where taking in heat from the front one.

Pump is running at full speed (EK D5), the fans are bequiet! Silent Wings 3 and blocks are EK Supremacy/Vector.

When at full load the fans are running in the 1200rpm region.

I suppose the fact my house can be quite stuff and there's not a flow of cool air reaching the case also has an impact.

 

[grec]

We'd need to know the loop set up really, but 50C isn't anything to be getting worried about, it's not going to have any impact on performance or product longevity, probably not noise either really. But if it's not just that the GPU block comes after the CPU block in your loop(Assuming one loop), it could also be the thermal compound or something when so close to ambient, too much, too little, not the best stuff or just not really "set" yet.

Edit: Laser thermometers are like £5 on eBay and would probably help you work out the heat flow abit better.

 

[Warchild]

50C is fine. I wouldn't even consider changing anything.

Problem is, since its a custom loop, you have left out an immense amount of info.
Radiator size 120/240/360, fan speeds, flow speed in GPM if you know it.

Personally I would prefer the front rad and lower rads as intake, and the top as an exhaust. And a chasis fan at the upper back of case as exhaust also. Since warm air rises you will have a uniform flow throughout the case. However it wouldn't affect your temperature that much.

Now if you said fan speeds were 80% PWM or higher, and GPU is still 50C, then I would think something is wrong. But if its 60% PWM or lower, I see no problem at all, and would even OC your GPU a little if you could. Again depends on fan speeds, and quantities etc.

 

[tinytomlogan]

Just a note on forum etiquette

Sig specs change - so always post your specs in the post body - even if it does just mean copy and pasting

 

[Kei]

The ambient temperature of the room and also the ambient temperature inside the case will have a profound effect. Measure a delta versus the internal case temp and the component temp and then a delta between internal case temp and room ambient.

I know in my case, I had to move it out from under my desk as the delta on ambient to in case was around 8-12 degrees so even with a 15 degree delta on the gpu and a 30 degree delta on the cpu, temps were very high as internal case temps were getting to around 38 degrees. The air coming out the exhaust vent above the radiator was just over 40 degrees. I moved my case to a more open location and removed a lot of the excessively restrictive dust filters and dropped over 15 degrees off the cpu and gpu temps.

With good airflow, the internal case temp should be no more than 4-5 degrees warmer than the room, obviously the lower the difference the better.If your case temperatures are good, and your component delta is high, it's possible you have either poor flow or poor heat transfer from a bad mount. (TIM not doing it's job) With all that said, 50 on the gpu is not excessive nor is 70 on the cpu.

 

[AlienALX]

Given you have so many rads have you made absolutely sure they are all burped and you are using all of them?

You also need to bear in mind that when running RT the 2080 will get hot like you wouldn't believe. Think Fermi...

My Titan XP usually hovers in the 40s under a 240 rad (it was alone in its own loop then) but I have seen it venture into the 50s with something really heavy. That doesn't concern me. I've not (yet) had a card expire when under water, meaning I must be doing something right. IMO it's driving the card into the 80s, then letting it cool down repeatedly that kills them.

 

[trawetSluaP]

OK, so more info.

1 x 360 Rad at top of case.

2 x 420 on front and bottom.

EK Supremacy and Vector blocks with a D5 Pump/Res combo.

Silent Wings 3 fans in push pull on all rads.

Speed is between 60-70% depending on water temps.

I have no way of measuring ambient or case temps.

The card is OC'd on both core and memory.

Gonna change the bottom rad to intake as others have suggested and see if it helps a bit.

Tom, will keep that in mind for future posts, thanks.

 

[Kaapstad]

All rads set to exhaust hot air out of the case.

For a 7900X and 2080 you don't need all 3 rads.

 

[AlienALX]

I would be concerned about an air pocket in that case. You've definitely totally saturated the components. Like I said though, expect the 20 series to run hot. It's the first time Nvidia have put out a kitchen sink since Fermi.

 

[Warchild]

all in all though, 50C is not bad at all. Mine hits 50C on both cards heavily overclocked with 2x 480 rads. The fans are however only at 35% PWM so its silent running.

Don't overthink it. If you start hitting the 60s with your setup on the GPU, then it might be time to look into things. For now, enjoy your custom loop

70 on cpu and 50 on gpu are perfectly fine

 

[Kaapstad]

I would be concerned about an air pocket in that case. You've definitely totally saturated the components. Like I said though, expect the 20 series to run hot. It's the first time Nvidia have put out a kitchen sink since Fermi.

2080

Don't run that hot.

Don't use that much power.

Even my RTX Titans only use 280w TDP which is a lot less than some cards I can think of.

 

[grec]

280W is still quite a lot for a stock card, it's more than FuryX/390X was, the only modern cards it's less than really is 290X/Vega64/some other Titans. The 2080 is a 225W card, so slightly more than Vega56, I'd say anything beyond 200W you could say is a hot card, remembering anything with only an 8-pin can't use more than 216W (On the relevant 12V line) while in spec.

 

[looz]

The large die size helps with transfering the heat though.

 

[grec]

For the Titan/2080Ti yeah, the 2080 has a smaller die than Vega & Fury however, & the decrease in area for the 2080 is much larger than its decrease in power consumption against the Ti.

 

[Kei]

RTX 2080Ti Die Size: 754 mm² TDP: 250 W
RTX 2080 Die Size: 545 mm² TDP: 215 W
Vega 64 Die Size: 495 mm² TDP: 295 W

Smallest die is vega, biggest TDP is vega. My Vega 56 with 64 bios, +150% power target and a hefty overclock pulls over 300W and will sit at roughly 58 degrees being cooled by an EK block and 420 and 240 radiators. Dropping from 1.2V to 1.05V drops the power draw to roughly 230W and the temperature doesn't get over 50. This is in a room ambient of 24 and the case internal temp is 32.

So GPU delta is 18 degrees above case ambient.

 

[trawetSluaP]

Thank for all the feedback ie saying temps are fine as well as the suggestions and recommendations too.

Am gonna have a little jiggly about with the loop over the week end, change the bottom rad to intake and check the blocks and paste are OK to be thorough.

Will report back if there's any change.

Thanks again for the help.

 

[trawetSluaP]

Right, jiggling complete.

Bottom rad changed to intake.

Idle temps for GPU and Water have dropped by 5-6C.

Load temps for Water and GPU have dropped 5-6C and CPU load temps have dropped by 8-10C.

A small change but definitely worth doing!

 

[Warchild]

Great to hear. I guess your chassis air flow has also improved with this. Its more uniform now, and not pulled in different directions. And that temp change is alot. Not a small improvement!