After letting the box sit next to my PC for three weeks I finally kicked myself in the teeth and forced myself to install it today.  Boy am I glad I did.
 
I let it run on Extreme/Max settings using Uniengine Heaven for a couple hours and the temps hovered around 45c to 48c,  that seems amazing to me, although I still have the side off.
 
Back when I benchmarked my 2080 Super using Heaven the results were:
 
Average FPS: 136.7
Score: 3443
Temps: 69c
 
On the exact same test with my 3080, Temps: 45c to 48c
 

 
 
With the pessimistic moods I've been in lately I feel like this is too good to be true, that something wasn't reading right.   That's a 70% increase in performance right?
 
Edit:  I suspected real world gaming would be the best test.   Borderlands 3 in game benchmark ran at average of 80fps on the 2080,   now 109fps on the 3080.  But that game is a resource hog.

yaggaz
 
After letting the box sit next to my PC for three weeks I finally kicked myself in the teeth and forced myself to install it today.  Boy am I glad I did.
 
I let it run on Extreme/Max settings using Uniengine Heaven for a couple hours and the temps hovered around 45c to 48c,  that seems amazing to me, although I still have the side off.
 
Back when I benchmarked my 2080 Super using Heaven the results were:
 
Average FPS: 136.7
Score: 3443
Temps: 69c
 
On the exact same test with my 3080, Temps: 45c to 48c
 

 
 
With the pessimistic moods I've been in lately I feel like this is too good to be true, that something wasn't reading right.   That's a 70% increase in performance right?
 
Edit:  I suspected real world gaming would be the best test.   Borderlands 3 in game benchmark ran at average of 80fps on the 2080,   now 109fps on the 3080.  But that game is a resource hog.

 
Awesome and congrats!  Told ya you'd like it. 
 
I think these GPUs chew through Unigine Heaven.  You'll have to put it through 3DMark if you wanna push it some more and see the temps you get there.
 

andross182
those are insanely low temps for a 3080 hybrid.  What is your ambient tempature?  My 3080 and 3080ti hybrids both were 60c with fans going full tilt as their max temp.  I didnt drop into the 45-50c range till I got my hydro copper 3080ti and did a full custom loop.

I think it's based on the benchmark he used but those temps can be achievable if you have very cool ambient temps, amazing airflow, fan replacements, cable management, etc, etc.  Usually you'll see folks with Hybrids in the 50c range and custom in the 40c range if they have a proper loop.  I also have seen some upgrade their 240mm hybrids by replacing the fans with premium rad fans in push and pull and reach high 40s before.

GTXJackBauer
 
Awesome and congrats!  Told ya you'd like it. 
 
I think these GPUs chew through Unigine Heaven.  You'll have to put it through 3DMark if you wanna push it some more and see the temps you get there.
 

 
Thanks 
 
Okay what about Unigine 2.0, Superposition? That's more for modern cards yeah?  Did the 8k optimised test:
 

GTXJackBauer
 
 
Looks good.  You sure it's not in a custom loop? 
 

lol it's weird that no matter what load I throw at it, what game I play, what benchmark I run it doesn't go over 48c.   Can these GPUs incorrectly report temps?

NereusHixon
I am also curious to know how are you getting temps < 50c. My 3080Ti hybrid has never seen temps below 65c @ 100% load.

Yes something is nagging at me about this.  When I tried the 8k load test above it still refused to go over 48c, almost as if it's maintaining that speed by throttling FPS.    I thought about disconnecting the fans and running the test again but that feels very risky.    Does anybody know of a specific test/benchmark that shows how hot your GPU can get?

NereusHixon
I am also curious to know how are you getting temps < 50c. My 3080Ti hybrid has never seen temps below 65c @ 100% load.

Sounds like you are on the stock fan curve on the normal switch position? I don't think the fans turn in until 60C. Setting a custom fan speed curve in afterburner overrides the "silent fan mode" the card uses.

With the XC3 3080, I would see high 40s on the hybrid under full load (340W). The FTW3 3080Ti puts it more around mid 50s but that's with 80W more power being cooled.

yaggaz

GTXJackBauer
 
 
3DMark and GPUz for temps.

Being a 3080 HYBRID (240mm), the less power hungry GPU compared to its bigger brothers plays a role in those temps you're getting in good ambient temps, airflow and case, etc, presumably speaking since I don't know what your ambient temps, etc are. 

Played Fallout 76 on max settings for two hours and GPU-Z records highest temp as 48c.  Surely there must be throttling going on???
 

 
No where near throttling unless you get way up there in temps like shutting off the fans (don't do it). lol 

Just finished my RTX 3080 FTW Ultra conversion, for anyone who is wondering, it wasn't that difficult. Surely a little time-consuming, but everything works as it should. Did the BIOS updates, fans are working perfectly and running at 450W.

Try running HWinfo sensors....something isnt right if your Card never exceeds 49c ..."its a miracle" ;) Or try running Kumbuster....
I'll try looping Heaven and see what I get.....I know it never exceeds 47c....once it did and I pulled Water Block apart and re-installed....chaulked that up to re-using little plastic washers that were already squashed.
 
These are 12900K 5.2P / 4.1E OC
DDR5 6000 C36
3080Ti +120 / +725
 
Heaven Benchmarks I always run 2560*1440p 8xAA Full Screen Ultra / Extreme  as is below.
I recall my Heaven Benchmark was higher with this same Card running W10....I'm on W11 21H1, obviously the Heaven Score isnt really representative running W11
 
Fairly large loop, 480*360*240 Rads..all Noctua High Static Pressure Fans 3080Ti w EK Vector Block....
 

 

 

 
 
 

yaggaz

rjbarker
Try running HWinfo sensors....something isnt right if your Card never exceeds 49c ..."its a miracle" ;) Or try running Kumbuster....

Okay looking at your results something is really bizarre here.  Did they put a 3090 ti in mine and sell it as a 3080 lol?
 
Seriously though, how can a 3080 Hybrid possibly beat a 3080 ti with the type of loop you have in FPS, score and temps on Heaven.      Now if it WAS throttling to keep the temps at that level, the score and FPS would drop.   Mysteries, I must solve them...
 
Downloading kombuster

Cause you had AA disabled...those runs above are with AAx8
Look under Mode: 2560*1440p AAx8 in my first scores....
 
Below is with AA disabled, as you had yours (I always run Heaven maxed out, but in all honesty don't really use it anymore other then for a quick test of my GPU temp, as its very old DX11 Test)..
 

 
 

yaggaz
Ah okay that solves the FPS question, but still not the temps.

Yeah no idea ....Im quite "intimate" with my loop / temps and know exactly when they arent right....generally a quick Heaven loop for 10 min lets me know whether or not I have a good "seat" on my GPU Block...provided I peak at 46/47c Im golden....if I see into the low 50's I know something isnt quite right.
 
My Max temp on my 3080Ti playing any game or any benchmark is 46c/47c.....if ambient temp is cooler than 20c it will drop in temp as ambient drops.
 
Try playing a AAA title and see if your GPU gets above 49c....it should....especially if fans are only ramping up to 65-75%.....if it "Never" goes above 49c...I would think perhaps a sensor isnt quite right....have you ran PX1 and flashed fw / vbios?
 
You could also throw Port Royal and Timespy at it....Kumbuster will max out your Power Draw....so should see temps higher than 49c there as well......if not you either have a GPU sensor not reading correctly or an amazing Hybrid Card :)
 
Enjoy your 3080.....I had one previous to this 3080Ti and in all honesty if I had to do this all over again I would have kept the 3080 and passed on the Ti version. Great Cards!

rjbarker
 
 
Yeah no idea ....Im quite "intimate" with my loop / temps and know exactly when they arent right....generally a quick Heaven loop for 10 min lets me know whether or not I have a good "seat" on my GPU Block...provided I peak at 46/47c Im golden....if I see into the low 50's I know something isnt quite right.
 
My Max temp on my 3080Ti playing any game or any benchmark is 46c/47c.....if ambient temp is cooler than 20c it will drop in temp as ambient drops.
 
Try playing a AAA title and see if your GPU gets above 49c....it should....especially if fans are only ramping up to 65-75%.....if it "Never" goes above 49c...I would think perhaps a sensor isnt quite right....have you ran PX1 and flashed fw / vbios?

Yep I know exactly what you're saying when you know your system and something doesn't feel right.   Below was the test with AA on this time,  but I was watching the temps and it was furiously flicking between 48/49 the whole time, so either sensor is off or it's throttling?
 
I'm a bit worried about the PX1 thing as well.  I do have TPM disabled but there is absolutely no option anywhere to disable Fast Boost, although that could mean it doesn't have it at all.  But I'll check it out and see what it's saying.
 
Is there an average difference between GPU and mem temps?  Because mem is 70c when GPU is 48
 

rjbarker

yaggaz
Ah okay that solves the FPS question, but still not the temps.

Yeah no idea ....Im quite "intimate" with my loop / temps and know exactly when they arent right....generally a quick Heaven loop for 10 min lets me know whether or not I have a good "seat" on my GPU Block...provided I peak at 46/47c Im golden....if I see into the low 50's I know something isnt quite right.
 
My Max temp on my 3080Ti playing any game or any benchmark is 46c/47c.....if ambient temp is cooler than 20c it will drop in temp as ambient drops.
 
Try playing a AAA title and see if your GPU gets above 49c....it should....especially if fans are only ramping up to 65-75%.....if it "Never" goes above 49c...I would think perhaps a sensor isnt quite right....have you ran PX1 and flashed fw / vbios?
 
You could also throw Port Royal and Timespy at it....Kumbuster will max out your Power Draw....so should see temps higher than 49c there as well......if not you either have a GPU sensor not reading correctly or an amazing Hybrid Card :)
 
Enjoy your 3080.....I had one previous to this 3080Ti and in all honesty if I had to do this all over again I would have kept the 3080 and passed on the Ti version. Great Cards!

Been custom liquid cooling for 10 years now.  HYBRIDs have come along way with more rad, newer pumps, better rad fans to choose from, etc. that I will be making the switch to minimalize the current setup I have.  I've had my fun and now looking to move on, mainly because I don't have the bug anymore, dread tear downs for hardware changes, breakdowns, etc. While AIOs have come closer to custom temps with a larger selection to choose from, custom is still great for it's customization and not have the limitations AIOs have.
 
Because of the use of 240mm rad for Hybrids, you will see more folks with high 40c and 50c+ range in temps.  It depends on the GPU used and a few other things to account.  120mm I always felt wasn't enough and most were iirc in the 60c+ range which was still great for what it was compared to on air at 80c+.
 
P.S. - Yaggaz, stop overthinking it and stop using old benchmarks.  Your temps are fine for what you're doing.

Have steam?  If yes, get 3DMark or wait till its on sale.

GTXJackBauer

rjbarker

yaggaz
Ah okay that solves the FPS question, but still not the temps.

Yeah no idea ....Im quite "intimate" with my loop / temps and know exactly when they arent right....generally a quick Heaven loop for 10 min lets me know whether or not I have a good "seat" on my GPU Block...provided I peak at 46/47c Im golden....if I see into the low 50's I know something isnt quite right.
 
My Max temp on my 3080Ti playing any game or any benchmark is 46c/47c.....if ambient temp is cooler than 20c it will drop in temp as ambient drops.
 
Try playing a AAA title and see if your GPU gets above 49c....it should....especially if fans are only ramping up to 65-75%.....if it "Never" goes above 49c...I would think perhaps a sensor isnt quite right....have you ran PX1 and flashed fw / vbios?
 
You could also throw Port Royal and Timespy at it....Kumbuster will max out your Power Draw....so should see temps higher than 49c there as well......if not you either have a GPU sensor not reading correctly or an amazing Hybrid Card :)
 
Enjoy your 3080.....I had one previous to this 3080Ti and in all honesty if I had to do this all over again I would have kept the 3080 and passed on the Ti version. Great Cards!

Been custom liquid cooling for 10 years now.  HYBRIDs have come along way with more rad, newer pumps, better rad fans to choose from, etc. that I will be making the switch to minimalize the current setup I have.  I've had my fun and now looking to move on, mainly because I don't have the bug anymore, dread tear downs for hardware changes, breakdowns, etc. While AIOs have come closer to custom temps with a larger selection to choose from, custom is still great for it's customization and not have the limitations AIOs have.
 
Because of the use of 240mm rad for Hybrids, you will see more folks with high 40c and 50c+ range in temps.  It depends on the GPU used and a few other things to account.  120mm I always felt wasn't enough and most were iirc in the 60c+ range which was still great for what it was compared to on air at 80c+.
 
P.S. - Yaggaz, stop overthinking it and stop using old benchmarks.  Your temps are fine for what you're doing.

Have steam?  If yes, get 3DMark or wait till its on sale.

Agreed...I have been under water since 2013....this present build will be my last "Full Custom Loop" as well....done moving around my 60 lb 900D !!!
Im quite sure the OP will definitely see temps in excess of 49c once he starts "laying the boots to that GPU"....no doubt!
 

yaggaz
(I don't have those other benchmarkers...yet)

 
Found it on sale here.