irenicus785
 
Complete night and day between my overly HOTT 780ti's... Kepler would just burn-away 64-72c+ full-load with benchmarks and games.

 
It isn't really a Kepler or ACX vs ACX 3.0 issue. It just isn't a fair comparison. The 780 Ti is a 250W GPU vs the GTX 1070 at 150W. Of course the 1070 is going to stay ice cold compared to a 780 Ti. Fit an ACX 3.0 on a Titan XP somehow and see what happens.
 

cabbage
ROTTR, Valley 4.0 hits 62c tops. much cooler than my 980ti. and super quiet

Same as above. You can't make claims of cooler efficacy based on comparisons between 250W cards and 150W cards.

Salem13

arestavo
My 1080 ACX 3.0 @2202MHz runs at 39C full load. 2164MHz (2202 sometimes fails with certain WUs) and 37C right now folding away!
 
Of course, that's using an AIO water cooler   

Yea, I have not been able to hit 40c yet with Valley running on extreme HD

You are running custom water. My GTX 1070 FTW runs 60 to 61 c on the default curve and and peak clock is anywhere between 1999 and 2012 MHz out of the box. For comparison, my GTX 960 SSC made it into the 70+ c on default curve and peaked at 1445 MHz.

ACX 3 SC GTX 1070.  SWTOR 3 hours Maxed graphics settings, the card stayed at 39c - 40c.  Running 2000 GPU Clock Speed with a custom fan curve that is mild up to 50c then jumps up to 60%, maxes out 90% at 65c.  I couldn't be more impressed with my choice.
 
Update:  Running Heaven Benchmark 4.0.  FPS 157.6 \ min. 35.4, max 321.5 \ Ultra with Normal Tessellations \ 1080 \ max temp 62c
 
PT 112%
Temp Target 92c
+109 GPU Offset
No Mem. Offset
75% Voltage
GPU Clock 2100mhz

Hmm hard to say, my 1080 FTWs (one DT) seem to run a bit cooler than my GTX 980s did, but the 980s had smaller fans that the FTWs do, and I've also swapped some case fans since then too, so not a really fair compare, but at least the wattage is about the same 175w for the 980s and 180w for the 1080s (I know the ftw version has a bit higher max, but not sure if that has much effect on if it reaches that.)
 
SO I guess what I'm saying is... I don't really have a good measurement of it either.
 
my temps are at 53c for bottom card, 68c for top card, with the default "custom" fan curve that is done by Precision X OC (which is more aggressive than the default curve by a fair bit.)

Just put my 1070ftw in yesterday, haven't tested high temps but loving the idle at 23c and of course the fans aren't even on yet. 
Same temps as my 780Ti on water temps right now.

My reference design 1080GTX Founder Edition doesn't break 64C with radial fan cooler. These cards are cool runners, but so were Maxwell, if I remember correctly. The ACX cooler design should shave a few more Celsius off the radial designs, although, I haven't really seen proof of this. My curve is set up like this 50C=60% 55C=70% 60C=80% 65C=100%

As I said, my temps peak at 62C with ACX 3.0. My fan curve is also slightly more... conservative with 30C= 40%, 50C=50%, 60C=60%, 65C=100%.

Sean1976
My reference design 1080GTX Founder Edition doesn't break 64C with radial fan cooler. These cards are cool runners, but so were Maxwell, if I remember correctly. The ACX cooler design should shave a few more Celsius off the radial designs, although, I haven't really seen proof of this. My curve is set up like this 50C=60% 55C=70% 60C=80% 65C=100%

Slap a hybrid kit on there. My Founders Edition never goes above 45C. 2025mhz boost constantly.

Heini2
I'm hoping they will release the ACX 3 for purchase but I don't expect it to happen.

I bought one off ebay for £25 the other day.

My 1080 classified runs around 60-62C benching at 2202MHz and +600MHz memory in Heaven. This is with fans at 80% and case fans at 60%. Super satisfied! =)