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[Official] NVIDIA GTX 780 Owner's Club - Page 1725

post #17241 of 24915
I have EVGA 780 SuperClocked with reference air cooler. I have an 80% asic quality. I put power target at 106, temp target at 84. And I got my i7 4770k at 4Ghz. No modded bios yet as I can't even figure out what I'm doing with stock.

Right now both gpu and mem are +100, giving me 1214Mhz. I think I can go a little higher (my mem was at +300 for quite a while and +200 clock crashed benchmarks but not games), but no matter how I overclock, my benchmarks don't seem to go up. In fact it seems they are going lower when I get seemingly better overclocks. frown.gif

I know there is some throttling involved at high temps, but my GPU isn't breaking a sweat. Under 50C during Cinebench so it shouldn't be throttling for that. And CPU hovers around 60C.

I don't really care about the benchmarks but I'm not sure this is helping me in games. Really frustrated with this process, I've read dozens of guides and still feel like I have no idea what I'm doing.
Edited by TelFiRE - 2/1/14 at 10:33am
    
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post #17242 of 24915
I didn't have much of a reason to overclock my 3 GTX 780's until recently I've started mining cryptography on my reference 780's. The reference OC bios posted on the front page does wonders for my mining. I'm able to hold a 1293 steady on all three GPUs. Not too shabby for several 1st week release reference GTX 780's.

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post #17243 of 24915
Syan48306. What do result in 3DM 2011 and 2013, 3-Way SLI?
post #17244 of 24915
Quote:
Originally Posted by TelFiRE View Post

I have EVGA 780 SuperClocked with reference air cooler. I have an 80% asic quality. I put power target at 106, temp target at 84. And I got my i7 4770k at 4Ghz. No modded bios yet as I can't even figure out what I'm doing with stock.

Right now both gpu and mem are +100, giving me 1214Mhz. I think I can go a little higher (my mem was at +300 for quite a while and +200 clock crashed benchmarks but not games), but no matter how I overclock, my benchmarks don't seem to go up. In fact it seems they are going lower when I get seemingly better overclocks. frown.gif

I know there is some throttling involved at high temps, but my GPU isn't breaking a sweat. Under 50C during Cinebench so it shouldn't be throttling for that. And CPU hovers around 60C.

I don't really care about the benchmarks but I'm not sure this is helping me in games. Really frustrated with this process, I've read dozens of guides and still feel like I have no idea what I'm doing.

The reason is somewhat obscure! GK110 has a "special"undervoltage protection that reverts to a low logical state every time the voltage is not enough to get the attainable clocks you set but not low enough to compromise the "normal" GPU operation, what happens is it reverts to low power output lowering the internal clocks but not showing on the OSD or any monitor, you only notice it when you see low benchmark values with a high OC! Meaning its a failed OC! when it happens you should increase voltage or lower the clocks or remove/lower memory OC! thumb.gif

Quote:
Originally Posted by Syan48306 View Post

I didn't have much of a reason to overclock my 3 GTX 780's until recently I've started mining cryptography on my reference 780's. The reference OC bios posted on the front page does wonders for my mining. I'm able to hold a 1293 steady on all three GPUs. Not too shabby for several 1st week release reference GTX 780's.


Its not advised to mine or folder for long periods of time with any OC at all!
Several titans/780/780ti burned with OC and some with even stock voltages!
Just my 2 cents!

Cheers

Ed

(Team skyn3t)
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post #17245 of 24915
How do I know when to raise my power target vs voltage?
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post #17246 of 24915
Quote:
Originally Posted by woomdawg View Post

How do I know when to raise my power target vs voltage?

One of my articles about TDP:


"The PT is the increase of TDP (thermal design power) which is determined by the chips maker (GK110 =250W) but this is not a fixed value, refers to the maximum amount of power the cooling system, in this case a chip, is required to dissipate. The TDP is typically not the most power the chip could ever draw, but the maximum power that it would draw when running "real applications". This ensures the chip will be able to handle essentially all applications without exceeding its thermal envelope, or requiring a cooling system for the maximum theoretical power.
"TDP is meant to be the wattage of the processor at load. I say "wattage" because it is unclear if this is meant to correspond most immediately to how much power is consumed in watts, or how much heat is produced in watts, but as near as I can tell the TDP is pretty much meant to indicate both" GL



(where C is capacitance, f is frequency and V is voltage)

Now, you dont have to make complicated calculus or anything like that because you have this chip here:



It monitors real-time voltage and power draw and its where AB gets its reading from the VRM´s! wink.gif

Stock bios come with 250W TDP (AKA PT) so when its at 100% you will have 250W of power draw, if you increase it to the max stock 106% youll get: 250x106%=265W
The same is with modded 300/400/500W bios what you see in AB or precisionX is the percentage above what you set!
Ex: with a 500W bios (Slider set to maximum of course) you see 60% usage, this equals to: 500x60%=300W
YOU CAN DIRECTLY CONTROL TDP WITH THE SLIDER! thumb.gif

Now, why has AB a 300% slider while PrecisionX uses 200% for the same bios with the same PT?
Well, AB and precision have different interfaces so the readings are different for the same thing, just keep in mind the base TDP value and make your calculations from there
It doesnt matter what the % slider is in any program, just increase it if you having stutters or frame drops and when making calculations always make them from the base TDP:

aW x b% = cW (a= bios base TDP, b= OSD TDP, c= aproximate power draw)"



Cheers

Ed

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post #17247 of 24915
How are my scores?





devil.gif
post #17248 of 24915
Quote:
Originally Posted by worms14 View Post

Syan48306. What do result in 3DM 2011 and 2013, 3-Way SLI?

I'll download 3Dmark 2013 and try to see how that goes.

Quote:
Originally Posted by OccamRazor View Post


Its not advised to mine or folder for long periods of time with any OC at all!
Several titans/780/780ti burned with OC and some with even stock voltages!
Just my 2 cents!

Cheers

Ed

(Team skyn3t)

I'm sure I'm killing my cards prematurely but honestly, I don't really care if the cards give out on me. They're going to be swapped out once the GTX 880 comes out anyway. That said, the core is getting proper cooling and it tops out at only 50 °C ish. If the VRM were to give out...whelp. rolleyes.gif

That's what the 3 year EVGA warranty is for right? biggrin.gif


If anything, I'm more worried about my PSU. I've got a Seasonic X-1250W and I'm pulling 1280 ish watts from the wall. which puts me close to within 100w of the max output of the PSU. Running 24/7 with a gentle typhoon AP-14 swapped PSU fan for silence biggrin.gif
Edited by Syan48306 - 2/1/14 at 6:06pm
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post #17249 of 24915
Quote:
Originally Posted by Leopard2lx View Post

does anyone else have micro stutters in most games? frame rates don't really drop but just every couple of minutes I get some light stutters which are especially noticeable in FPS games.
i tried messing around with different setting in NV control panel but no result. I also tried forcing triple buffering via D3DOverrider

That's not micro stuttering
post #17250 of 24915
Quote:
Its not advised to mine or folder for long periods of time with any OC at all!
Several titans/780/780ti burned with OC and some with even stock voltages!
Just my 2 cents!

Cheers

Ed

(Team skyn3t)

I have had my 2x 780 rig mining solidly for the past 908 hours (about a month and a half) at 1200MHz GPU @ 68-72 deg C with no issues. Ed, just curious, what components are getting stressed out under these conditions that would shorten card life? Lots of folks running the AMD/ATI cards for this without complaints of failure, and I hear those run much hotter.
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