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GTX 780 Owners Club

Gregster said:
http://forums.overclockers.co.uk/showthread.php?t=18494374

A handy guide for overclocking with Precision X there :p
Click to expand...

Thanks.
A lot to read through but I think I'm getting the hang of it :)

Here's a screen shot of what I'm working with now (stock voltage):

desktop2013060616201223.jpg


Anything I should work on?
 
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Duff-Man said:
If you aren't planning to use a second card, then any decent 600WPSU should be sufficient cor a 780 and a nicely overclocked CPU. For an SLI setup I would go 850W. You can probably get away with 100 or 150W less in each case, but always worth having some headroom ehen it comes to power supply.

As for as the PSU brand, I like the corsair HX and TX series. Solid as a rock. Got an HX1200 myself - overkill yes, but it's a beast.
Click to expand...

Cheers, I had a TX before and it was great. Might stick with them.
 
K1LLER HORNET said:
Thanks.
A lot to read through but I think I'm getting the hang of it :)

Here's a screen shot of what I'm working with now (stock voltage):
desktop2013060616201223.jpg
Anything I should work on?
Click to expand...

Looks good clocks to me. What is stability like on those? I like to run Heaven for a few loops to see and basically play a game for a couple of hours. If it crashes, I knock the clocks back by 20Mhz and give it another go.
 
Just did a Heaven run through. Unstable @ +200MHz :(
Dialed it back down to 180MHz & was able to get a complete run through. Though that seems to be my cards limit as 185MHz also crashed.

Have tried overvolting to +38mv, but it doesn't seem to help much if at all...Weird.
 
K1LLER HORNET said:
Just did a Heaven run through. Unstable @ +200MHz :(
Dialed it back down to 180MHz & was able to get a complete run through. Though that seems to be my cards limit as 185MHz also crashed.

Have tried overvolting to +38mv, but it doesn't seem to help much if at all...Weird.
Click to expand...

Pretty much what both of my cards will do. I did get one of them through a couple of loops of heaven at +200 with the extra 38mv, but it crashed of the third loop.

Still, the +187 setting gives well over 1150Mhz, which is a very nice bump from the rated boost-clock of 902Mhz (almost 30%). They can do this without over-volting.


Has anyone else noticed that sometimes the core clocks will report as 575Mhz, even though they're clearly doing more? I have the core clocks for each GPU (and other info) output to my keyboard screen (G15). Sometimes it will report as 575Mhz, even when the benchmark result implies it must be operating at 1100Mhz+. Checking the graphs in precisionX shows the same (575Mhz flat). Probably just a bug in precisionX, but strange nonetheless.
 
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Not stable at +180 after all. The benchmark completes fine, but manually walking through the world caused a crash...
Enabling overvoltage seems to have remedied that.

Update: 3DMark crashes with those settings.

+160MHz seems stable for now...
A bit of a step down, but oh well.
 
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Duff-Man said:
Has anyone else noticed that sometimes the core clocks will report as 575Mhz, even though they're clearly doing more? I have the core clocks for each GPU (and other info) output to my keyboard screen (G15). Sometimes it will report as 575Mhz, even when the benchmark result implies it must be operating at 1100Mhz+. Checking the graphs in precisionX shows the same (575Mhz flat). Probably just a bug in precisionX, but strange nonetheless.
Click to expand...

Yeah I have seen this on 4.2.0. To get rid of it I uninstalled 4.1 rebooted then installed 4.2.
 
Spikey said:
Thanks I'm only thinking of a single card at the moment. What sort of PSU should I be looking at for these cards? Was thinking of XFX.
Click to expand...

I use the 850W XFX with mine and I would highly recommend one. I've ran 680 SLI and an OC'd 3770k and its been fantastic, so quiet.
They come with a 5 year warranty which should give you some confidence.
 
Just a stock run of my Gigabyte GTX 780 WindForce OC 3GB, everything on auto, fan etc - will overclock tomorrow.

2500k @4.8GHz
ASIC Quality = 74.6%
320.18 drivers
Max Boost = 1097MHz
Max Temp = 71 °C
Room Temp = 25.5 °C

stockclock.gif
gtx780stock.jpg
temps1.jpg
 
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Stock max boost of 1097Mhz?! That's a hell of a lot higher than mine were... They boosted to about ~1030Mhz on a stock run of heaven.
 
+135MHz onto the GPU Clock, I did try +140, but I crashed. I'll mess around with adding some volts to the core tomorrow, plus tru squeeze something out the memory, very happy so far. :)

2500k @4.8GHz
ASIC Quality = 74.6%
320.18 drivers
Max Boost = 1228MHz
Max Temp = 72 °C
Room Temp = 25.5 °C
135clock.gif
gtx780135.jpg
temps2.jpg
 
Duff-Man said:
1228Mhz... On air? Very nice indeed.

Is that the best clocks we've seen so far from an air cooled 780?
Click to expand...
:) I've seen a few higher on the Unigine Heaven 4 thread, hence beating my score - some stating stock settings - bizzare! >> link

I'll apply some volts, and try upping the memory tomorrow, I doubt I've got one of the best cards, but I'm happy.
 
Nice core clock. Only 93% board power too!

I can get mine to peak 106% power on valley with +190 core (1189) and +520 on the memory +7Ghz.

If yours can pull the power limit its going to fly!

Sweet card you have there.
 
I only see one higher 780 clockspeed in the Heaven thread, and I presume that card is under water... either way extremely impressive chip you've got there.
 
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