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GTX 1080 Overclocking.

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FatherMurphy said:
So, I'm crashing in FireStrike Ultra and FO4 when I push my EVGA 1080 FTW above 2050 mhz... is this an average/decent overclock or am I doing something wrong?

Don't get me wrong, the card is whisper quiet at that speed, but I guess I expected a bit more (north of 2100 mhz) from a custom PCB 1080 with two 8 pins. Should I try increasing voltage as much as I can?
Click to expand...

I've messed with overclocking two different 1080s and one 1070. It seems to me the cores all max out just south of of 2100 mhz for 24/7 stability. My eVGA 1080 FTW maxes out around 2088 mhz. I think the extra VRMs and power plugs on the aftermarket cards are a waste of space and electricity. The core will run out of headroom LONG before the ability of the VRMs to supply stable current do.
 
Golgatha said:
I've messed with overclocking two different 1080s and one 1070. It seems to me the cores all max out just south of of 2100 mhz for 24/7 stability. My eVGA 1080 FTW maxes out around 2088 mhz. I think the extra VRMs and power plugs on the aftermarket cards are a waste of space and electricity. The core will run out of headroom LONG before the ability of the VRMs to supply stable current do.
Click to expand...

I've come to this same conclusion after reading a few reviews and overclocking results.

Resorted to snagging either a used or new 1080 Founders and slapping a water AIO on it calling it a day.

I waited for 1080 Hybrid, but it isn't even listed on their website anymore. Missed clearance priced 980 Ti hybrid kits, kicking myself.

Could have had ~2.1ghz watercooled GTX 1080 for a month or two now for $750 but noooo I waited thinking aftermarkets would hit higher clocks.

EDIT: And SOB of course it is listed now, after checking just a few days ago. $730 eh? Well then, I know what card I want haha. (I'm so tired.)
 
Question:

Is it generally agreed that the max voltage increases allowed by Nvidia and third-party software (in my case, EVGA Precision) are, for the most part, safe long-term? I know "back in the day" one could manually boost voltage past safe levels.

But, if I use the "over-voltage" dial on Precision for my 1080, am I putting my 1080 at risk? My sense was that, no matter what, Nvidia and its partners' software won't let Pascal (or Maxwell or Kepler) gpus go above a certain voltage level, and that level is considered safe.

My overclock (EVGA 1080 FTW) is topping out at 2050 without touching any of the voltage settings. I wanted to raise the voltage settings to max and see if that gave me any more headroom. But I don't want to do that if it could shorten the life of my $700 card....
 
FatherMurphy said:
Is it generally agreed that the max voltage increases allowed by Nvidia and third-party software (in my case, EVGA Precision) are, for the most part, safe long-term?
Click to expand...
As far as I know yes.

The aftermarket cards will probably be close to or on that voltage already at the highest boost clocks. So I doubt you'll get much more out of the card. But you could try it, then decide if you want to run it like that long term or not.
 
My Palit Super Jetstream doesn't seem to want to get any higher than 2012MHz core for long term stability, even with extra voltage allowed in OC tools.

However, the memory seems to be able to take +850MHz without artifacting so I guess that's where my card's strength lies. More testing needed though to double-check stability on the memory clocks.
 
Cakefish said:
My Palit Super Jetstream doesn't seem to want to get any higher than 2012MHz core for long term stability, even with extra voltage allowed in OC tools.

However, the memory seems to be able to take +850MHz without artifacting so I guess that's where my card's strength lies. More testing needed though to double-check stability on the memory clocks.
Click to expand...

Don't just crank the memory, check benchmark scores as you increase it, eventually you'll go too high and the card will be stable but your performance will take a hit, you're probably way too high already
 
I just got my card in today and did some overclocking to see the limits. I hit 2114 on the core speeds and 5475 on memory so far. If I got higher the core it doesn't make it through Time Spy but will run Heaven for awhile no sweat. So just to be a bit safe I backed it down to 2114 for now although it was about 15 higher before it was bombing out of Time Spy.

Last run I ended up with a 7358 score in Time Spy with a single 1080 card. Can't be too bad I guess.

http://www.3dmark.com/3dm/14054179
 
Annisman* said:
Don't just crank the memory, check benchmark scores as you increase it, eventually you'll go too high and the card will be stable but your performance will take a hit, you're probably way too high already
Click to expand...

You're right. Performance actually starts to degrade with my 1080 above +550MHz even though artefacts don't occur until much higher clocks are reached. So I'll keep it at +550MHz.


Sent from my iPad using Tapatalk
 
Most cards are clockspeed limited, not power limited. In fact you can generally hit the stable OC clockspeed wall on a Pascal card at 100% power target (assuming you are only core overclocking.
 
Interesting, by simply upping my fan speed from the default preset profile (max fan speed was around 40% on auto) I was able to go above 2012MHz on the core without any driver crashes for my 20 min stress test with Unigine Valley.

I might be able to go higher than 2012MHz core after all!
 
So....how do you Overclock these things? I caught a cold but it wasn't enough to keep me from installing my new toy.

Out of the box on second BIOS setting it's already hitting 2024mhz 😱

I saw Jay's Two Cents review and he hit 2164mhz, so I wonder if that's my goal? I through the sliders to +200 and it crashed instantly haha.

I can also use 130% power limit. Card is whisper quiet, temps are acceptable (felt their old cooler was better, according to Jay's they used a more aggressive fan profile.)

I should install some benchmark software 😀
 
railven said:
I can also use 130% power limit.
Click to expand...

Percentages are pretty much meaningless, what is that in Watts?

Pascal gives better results if cool. The spread of overclock is probably around 10% so even a poor overclock isn't going to be far off performance wise.
 
Seems I can't do much over...Boost?

+80 Core/+400 Memory is stable. Hit ~2120 boost, and memory hits 5406. I think I can do an extra 50 on memory, but not gonna push for it.

Card runs cool, about 51C max, and ambient temps are rather high. Ran into a lot of stability issues but forgot I was OC'ing my CPU too. (I didn't do proper CPU OC testing tehe.) Put CPU back to stock, system has been stable.

Welps, out of the box it was hitting 2100+ on Core, so I guess my OC just maintains it there? Haha. Dunno.

Oh well. I'm a happy camper 😀. Also after I setup GF's setup, new fan is definitely quieter.
 
They should be valid. Re-run the test and see what 3Dmark says before you upload the results. It should give a reason.
 
Deders said:
They should be valid. Re-run the test and see what 3Dmark says before you upload the results. It should give a reason.
Click to expand...

Welps, I'll have to re-run the benchmark, it says online "GRAPHICS CARD IS NOT RECOGNIZED"

But when I load up the save of it, it says valid results.

GDBh4zX.png


I'm still fighting some stability issues. Randomly my driver seems to crash and I'm just surfing the net. I should just do a full fresh install. Caught a cold on Friday and struggled to even get the card installed haha. But I've recovered (of course just in time for work). Probably do a fresh install this week.
 
Once I get the system on a fresh install I'll rebench it. Card works as expected on stock, so not going to sweat it due to the random stability issues once I tinker with OCs.
 
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