NVIDIA GeForce GTX 680 - Post your default and manual overclocks

[Darren Hodgson]

@Sneakers - My GTX 680 can go to 1,287 MHz on the GPU clock on the reference cooler using a custom fan profile and temperatures are in the low-to-mid-70s C at most and generally under 70 C for the majority of the games I've tested (around 40 or so).

I'd imagine that a GTX 680 with a 6+8-pin PCI-E connector like the Palit Jetstream will allow you to push it much higher than that on air and even more if you use water cooling.

[ThEcLiT]

Originally Posted by Darren Hodgson

@Sneakers - My GTX 680 can go to 1,287 MHz on the GPU clock on the reference cooler using a custom fan profile and temperatures are in the low-to-mid-70s C at most and generally under 70 C for the majority of the games I've tested (around 40 or so).

I'd imagine that a GTX 680 with a 6+8-pin PCI-E connector like the Palit Jetstream will allow you to push it much higher than that on air and even more if you use water cooling.

Also zotac working on a 2ghz 680 :p http://www.techpowerup.com/162935/ZO...ock-Speed.html

and Galaxy Hall of fame edition, 4gb, 2x8pins also
http://www.techpowerup.com/163044/Ga...ing-Shape.html
http://en.expreview.com/2012/03/26/g...red/22013.html

[MfA]

let's hope someone find a way to use 1212mV with softmod on these cards otherwise it's not easy to maintain 1400s @1175mV.. then i may consider to buy one..

[cowie]

The card does produce 1.21v in 3d already,but you must use a dmm to see it.
Man some of you guys have cards running over +200 on the cores?
Even for just 3d11 1 only does +140 which is 1150/1200
its deflault boot vid is higher then other card .02v also .
Card 2 will go +187 1190/1246 default voltage
which is same max 3d volts as the other one 1.21v

Strange today in testing the h70 modded card needed for 3d11 repetable runs x2
1.23v =+162 1170/1224
1.26v =+187 1193/1246
1.30v =+209 1215/1268

[Fur4x]

My card can do 1250mhz stable on the core wich is about a 24% oC. Is it a good card or is it average ?

[TurboMan]

Same with mine, 1250mhz for 24/7 and 1330mhz for 3D mark 11. Thats with the 1.175v limit. 1.2v would really open her up a bit more. All on stock cooling.

PICTURE

[Fur4x]

Originally Posted by TurboMan

Same with mine, 1250mhz for 24/7 and 1330mhz for 3D mark 11. Thats for the 1.175v limit. 1.2v would really open her up a bit more. All on stock cooling.

PICTURE

you got a nice card, mine wont go over 1265mhz, the card or nvidia driver stop responging, and it require GPU + 165 to get 1250mhz

[TurboMan]

That is strange. Mine only needs +140 from MSI afterburner for 1250mhz...

[Fur4x]

Originally Posted by TurboMan

That is strange. Mine only needs +140 from MSI afterburner for 1250mhz...

at +140 does it give 1250mhz on a straight line or is the gpu mhz fluctuating ?

[TurboMan]

I will tell why it fluctuates (assuming you have the Power target set to 132%):



This basically tells you that as soon as it hits 70C it drops the GPU frequency. If you want it to stick to 1250mhz constant, you need to keep the GPU temperature below 70C. For me, it didint fluctuate because i set the FAN speed on MAX and it never went above 55C (for benching). Otherwise for gaming i have my fan on a CURVE from MSI afterburner and it goes up to 70C and it drops below 1250mhz. Make sure you guys remember these temperatures if you are going to be posting bench results...

[Fur4x]

but when stress testing with the fan speed on max does ur GPU mhz montoring does a straight 1250mhz line or does it make little spikes fluctuating ?

[TurboMan]

Straight line, no spikes. But keep in mind that Unwinder mentioned somewhere that the Afterburner might be reporting "set values" instead of the actual values or the other way around - i forgot. For EVGA precision (same software as MSI afterburner, Unwinder programmed them both) the reporting script might be slightly different but both programs are doing the exact same thing, just different skins...

[Fur4x]

Turbo could you post your 3dmark 11 P score and GPU score at 1250mhz please ?

[TurboMan]

I dont have time right now since im going to work but i will do it in the future. From what i gathered by your posts, you are worried about this spikes. Here is what you need to try:

1. Make sure you are using the latest beta MSIAafterburner.
2. Set fan speed on MAX.

If you are still getting spikes, this means that your POWER LIMIT option from the MSI Afterburner is not set on MAX(132%).

3. Set the power limit to 132% and try again with 1250mhz. You should not have spikes.

ps; I am 300% sure these steps will fix any spikes with MSI Afterburner.

[Darren Hodgson]

@TurboMan - Where did you get that graph from on the previous page?

I have my GTX 680 set to +150 MHz GPU/+450 MHz memory and during Battlefield 3 (I only tested the single player) I saw temperatures of 70-73 C yet the GPU clock remained above 1,250 MHz thoughout the level I was playing, hovering between 1,264 MHz and 1,287 MHz. I did not encounter a single problem while I played the game (for over an hour). I also played The Darkness II on these settings and it was fine too.

Yet when I loaded up Lost Plant 2 with those same settings I saw that 'infinite' polygon stretching glitch during one of the benchmarks suggesting that my settings were too high. The game never crashed though and the temperatures were again around 70-74 C running at the same clocks as BF3.

Odd how one game can work fine on an overclock and another doesn't and showed glitches.

[pimp_gimp]

So far the highest I can get my cards with the power limit set at +132, is the following,

+124 Core
+200 Memory

Did some tweaking and was able to get,

+134 Core
+250 Memory

[Xtreme1979]

+100 on the GPU and +250 on the mem with no issues. Don't see any reason to try higher.

3DMark 11 Extreme: http://3dmark.com/3dm11/3064336
3DMark 11 Performance: http://3dmark.com/3dm11/3063930
3DMark Vantage: http://3dmark.com/3dmv/3989181

[TurboMan]

The graph is from the tech power up review of GTX 680...

[Darren Hodgson]

I wish someone would post up a definitive Overclocking Guide to the GTX 680 as there seems to conflicting information going around about things such as the Power setting (some say to set it as 132% and others at 120% to max performance) and what the maxed offset are you can use without actually lowering performance.

The only absolute is the memory clock is fixed so increasing the offset for that guarantees the game will run at whatever speed you set and is never underclocked by the hardware.

I've settled on +150 MHz on the GPU and +350 MHz on the memory for now as it seems a safe overclock that allows me to run all of my games and benchmarks perfectly. The confusing thing is that I was running Battlefield 3 at up to 1,287 MHz/6.9 GHz for over an hour without a single issue but then I tried the Lost Planet 2 benchmark and got distorted polygons in one of the tests even though both games maxed out at the same temperatures (70-74 C).

[Lakigucci]

Originally Posted by Fur4x

P9914 3DMarks 11

http://3dmark.com/3dm11/3062057;jses...t6v5xp5y1unvs3

CPU + 165 stable
mem+ 400 stable

http://3dmark.com/3dm11/3063399

GPU +201 (1285Mhz)
Mem +200 (7000Mhz)

CPU i2500k @4.5Ghz
Mem 8Gb 1600Mhz @1866Mhz CL9

[Lakigucci]

Originally Posted by Darren Hodgson

I wish someone would post up a definitive Overclocking Guide to the GTX 680 as there seems to conflicting information going around about things such as the Power setting (some say to set it as 132% and others at 120% to max performance) and what the maxed offset are you can use without actually lowering performance.

The only absolute is the memory clock is fixed so increasing the offset for that guarantees the game will run at whatever speed you set and is never underclocked by the hardware.

I've settled on +150 MHz on the GPU and +350 MHz on the memory for now as it seems a safe overclock that allows me to run all of my games and benchmarks perfectly. The confusing thing is that I was running Battlefield 3 at up to 1,287 MHz/6.9 GHz for over an hour without a single issue but then I tried the Lost Planet 2 benchmark and got distorted polygons in one of the tests even though both games maxed out at the same temperatures (70-74 C).

"distorted polygons" Simply means the OC is unstable.
Lower ur memoryclock. Mine is max +300 before it gets instable.

[Fur4x]

Originally Posted by Lakigucci

http://3dmark.com/3dm11/3063399

GPU +201 (1285Mhz)
Mem +200 (7000Mhz)

CPU i2500k @4.5Ghz
Mem 8Gb 1600Mhz @1866Mhz CL9

nice results ! im glad to see my old i7 920 isnt to far behind the new hardware ! btw u got a nice card clocking at 1285 is impressive.

[Darren Hodgson]

Weird how default GPU clock offsets are needed to achieve the same overall GPU clock. My GTX 680 can hit 1,274 MHz with an offset of just +135 MHz. I've just been playing Split/Second at 1,274/6,700 MHz, which is itself weird because the game is capped at 30 fps (1920x1200, Very High settings) so I wouldn't have thought it would require a higher GPU clock than the default.

[Darren Hodgson]

Originally Posted by Lakigucci

http://3dmark.com/3dm11/3063399

GPU +201 (1285Mhz)
Mem +200 (7000Mhz)

CPU i2500k @4.5Ghz
Mem 8Gb 1600Mhz @1866Mhz CL9

+200 on the memory clock would give you 6,400 MHz not 7,000 MHz as the default memory clock is 6,000 MHz (+ 2 x 200 = 6,400). Or did you mean 'Mem +500'?

[Lavans]

Just a slight OC. I don't see much reason to go any higher. Though it seems that the card doesn't accept increased voltages when running 3 way extended monitors.



One thing that bothers me though is that when playing games, my GPU clock drops down to about 700-800MHz periodically even though the fan speed is set high enough that it doesn't exceed 75c. It's quite annoying, especially when playing demanding games at high resolution. We're talking about dropping from 45fps down to 20 at the drop of a hat for no reason :/