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[Official] NVIDIA GTX 780 Ti Owner's Club - Page 932

post #9311 of 16504
Man I wish!. I bought a 1500w NEX and it still doesn't work after 2 rmas. Bad 24 pin on 3 psus seems highly unlikely but even with another cable to make certain, same old.

Brought it to the local pc shop to verify my results each time, including running a separate dedicated 20 amp circuit solely for the quad benching power.

My hats off to EVGA who have been stellar when dealing with me. Gotta send the 3rd 1 back now though.

I used to love Asus products, and I'm not going to rant about the rma service experience I had, but now EVGA is my fave brand by far!!!

Heck I got a limited edition Duke Nuke'em belt buckle hehehe. Need suspenders to wear it though. Darn thing is pretty big and heavy.thumb.gif


Personally I've owned 3 brands. An old Enermax when they were pretty good, this EVGA NEX and all of the rest r Corsairs.

My daughter and I were doing a bit of card swapping a while back to c what 2 690s would do. I asked her to change the psu and she thought I did it.

We ended up running 2 on a TX 850M not knowing that. Got warm and loud and that's when I realized what we did, in the middle of a bench run, but

never missed a beat and is still going strong!!!

Love my Corsair Psus!!! No matter who makes the units, they're always top notch imho.


Guess I'll fill out the form again. Probably hit the wrong button last time. User error!!!! D'ohhh

FF
smile.gif
post #9312 of 16504
we these 2 dots : enabled-disabled? a switch does not join him, it is not possible to measure tenseness on him.



The card is asus GTX 780 Ti matrix platinum


Edited by jones965 - 3/27/14 at 12:05pm
post #9313 of 16504
So as some of you may know i'm planning on watercooling my 780Ti, so today i decided to take my card apart and "see whats under the fan" using it as an excuse to also replace the factory thermal compound with some Artic Silver 5:


The card in question, PNY 780Ti 3GB:
IMG_20140327_154810.jpg


IMG_20140327_155256.jpg


IMG_20140327_160720.jpg


0o0oh! Shiny:

IMG_20140327_160805.jpg



After applying the Artic Silver 5 and reassmbling the card i see my idle temps have dropped by ~10c:

idletemp.PNG


Now i run Heaven Benchmark so i can compare a little wink.gif


sadly i don't have any before screenshots of Heaven, but i do have the stats (i'm building a log of all overclock steps i make into an spreadsheet with pretty graphs and colours and ting tings biggrin.gif)

Using my stable OC settings to compare:

%2B250.PNG

Heaven Before:

FPS: 110.2
Score: 2775
Min FPS: 32.2
Max FPS: 250.2

GPU Min: 876
GPU Max: 1256
GPU Average: 1248.05988

GPU Temp Min:43
GPU Temp Max: 76
GPU Temp Average: 71.56287425




Heaven After:


FPS: 111.3
Score: 2803
Min FPS: 31.8
Max FPS: 251.2

GPU Frequency:
Min:324
Max: 1256
Average: 1249.564885

GPU Temperature:
Min: 29
Max: 65
Average: 60.46183206



So as you can see theres ~10c Difference in temps with just a re-application of thermal paste. Sorry if this is common knowledge but i'm shocked at how much of a difference this can make biggrin.gif


Now to see if i can push the core a little more biggrin.gif
post #9314 of 16504
i seem to have hit a wall at +270 MHz in afterburner

I attempted +280, there were artifacts then it crashed. Temps where fine, max 69c but the voltage was up and down 1.125 - 1.165

I then tried +20Mv and setting the power limit to 106%, with +280 MHz - almost completed heaven bench but crashed out on the 3rd to last scene frown.gif

Whats causing this? I'm using GPU-z- to monitor the perfcap reason but if im honest im not 100% sure what it all means?

Reliability Voltage and Operating Voltage, are these set physically on the card?

is this something Skyn3t's bios might help with? It helps to stabalise the voltage right? is there anything else?


i'm 100% addicted to beating my benchmark scores now, i haven't played arma 3 (the reason i bought this machine) in over 5 days haha
Edited by Pendaz - 3/27/14 at 12:25pm
post #9315 of 16504
are you hitting the power limit? If so then yes, a custom bios that allows you to raise the power target above 106% should help.
 
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post #9316 of 16504
Quote:
Originally Posted by pharcycle View Post

are you hitting the power limit? If so then yes, a custom bios that allows you to raise the power target above 106% should help.

im not sure, possibly? AB overlay shows 100% sometimes on power - is that what you mean?

(still learning sorry smile.gif)
post #9317 of 16504
Limits:
Power (could mean TDP, power on any of the rails, or total power)
VRel: Reliability voltage - to boost the clocks further, more voltage is required, but the BIOS limits maximum voltage to prevent damage to the GPU

VRel/VOp are set in the BIOS. Dump your BIOS and load it into Kepler BIOS Tweaker and you'll see various settings there.

Clock speed offset:
This doesn't just boost the clock speed - it offsets the clock table against the voltage table. It works in increments of ~13MHz. Look at the post I made earlier containing power calculation maths. There you will see that the power usage and heat output (the two are essentially the same) go up linearly with clock speed but exponentially with voltage. Therefore you are upping the clock speed but reducing the power which helps you get more clock speed without hitting the voltage, thermal and power limits.
post #9318 of 16504


I think AB would allow you to monitor the GPU power as Precision X does (they're based on the same interface). If you're finding it hitting 100% you need to increase the power target as the card will throttle otherwise. To increase power target beyond 106% you need a custom bios

EDIT: don't know if AB calls power target the same... but this is what I'm on about....

Edited by pharcycle - 3/27/14 at 1:12pm
 
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OCZ Vertex 3 Samsung 2.5" notebook drive Samsung DVD-R drive Noctua 120 
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Noctua 120 Noctua 140 Noctua 140 Win7 x64 pro 
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post #9319 of 16504
Need more volts, still not bad for reference

post #9320 of 16504
Quote:
Originally Posted by gordan View Post

VRel/VOp are set in the BIOS. Dump your BIOS and load it into Kepler BIOS Tweaker and you'll see various settings there.


can you tell me what changes i should make in kepler bios? is there any screenshots of others who've made the same changes to theirs so i can apply to mine?
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