Overclock the GTX 780

[Denoxx]

Hey guys

 

Today I received finally my GTX 780 but one thing I havent understood yet, is how to overclock. I know the tool EVGA Precision X but do I have to start this every time when I start up my PC to have the features of GPU Boost 2.0? I dont really get how to change the temperature target which the cards is aiming at.

 

I thank you for all your answers

[Jake Dalay]

I too have the GTX 780.

 

To overclock with Precision X, it's pretty simple. You can use the power/temp target sliders to define what temperature you are comfortable with. Then you can use the GPU clock offset slider to ADD that number of MHz to your base clock. The memory clock slider works the same way, ADDing to the memory clock. Keep in mind that you may have to adjust your voltages (overvolt) to achieve your desired overclock. However, it should be noted that with GPU Boost 2.0, your GTX 780 can "overclock" itself somewhat if it has enough thermal headroom.

 

I hope you have a very satisfying experience with your GTX 780 and overclocking, and good luck.

 

You should know in advance that I am not an expert overclocker, and may not be the best person to trey and help you, but I do own the card and thought I'd try to help.

 

Good luck!

[mybeat]

In precision X slight first two bars to the max, key in desired core and ram mhz, then do stability test with Valley and FarCry3 and watch out for those temps.

[Denoxx]

I too have the GTX 780.

 

To overclock with Precision X, it's pretty simple. You can use the power/temp target sliders to define what temperature you are comfortable with. Then you can use the GPU clock offset slider to ADD that number of MHz to your base clock. The memory clock slider works the same way, ADDing to the memory clock. Keep in mind that you may have to adjust your voltages (overvolt) to achieve your desired overclock. However, it should be noted that with GPU Boost 2.0, your GTX 780 can "overclock" itself somewhat if it has enough thermal headroom.

 

I hope you have a very satisfying experience with your GTX 780 and overclocking, and good luck.

 

You should know in advance that I am not an expert overclocker, and may not be the best person to trey and help you, but I do own the card and thought I'd try to help.

 

Good luck!

 

In precision X slight first two bars to the max, key in desired core and ram mhz, then do stability test with Valley and FarCry3 and watch out for those temps.

 

First of all thank you guys for your answers. Im sorry that I havent wrote back, but I wasnt able to read your posts before today

 

I have now a GPU clock offset of +140MHZ and a MEM clock offset of +300MHZ. Under load my voltage goes up to 1175mV but I remarked something strange:

 

When I start a benchmark ( I used FurMark) at the beginning when the load jumps up to around 100% my GPU Clock is around 1110MHZ but as the benchmark keeps going the clock goes down to around 1071. Is my overclock wrong? I dont really understand what clock I should get with those offsets, but I wondered whether this is just normal or if I have to lower my offsets.

[mybeat]

First of all thank you guys for your answers. Im sorry that I havent wrote back, but I wasnt able to read your posts before today

 

I have now a GPU clock offset of +140MHZ and a MEM clock offset of +300MHZ. Under load my voltage goes up to 1175mV but I remarked something strange:

 

When I start a benchmark ( I used FurMark) at the beginning when the load jumps up to around 100% my GPU Clock is around 1110MHZ but as the benchmark keeps going the clock goes down to around 1071. Is my overclock wrong? I dont really understand what clock I should get with those offsets, but I wondered whether this is just normal or if I have to lower my offsets.

What are your temps?

[Denoxx]

around 78 degrees celcius. my temp target is at 80 degrees. I've read that FurMark on MaxSettings tests the card under unnatural circumstances so I changed to Unigine Heaven 4.0 and I saw that my clock is stable. I think the card clocked itself down due to the short distance to the temperature target. I now run an 1.2GhZ overclock on my GPU and a 7GHZ oc ond the ram, so I raised the clock offset to +175 and lowered the Memclock offset to +248 which times 4 gets me exactly to the 1GHZ effectively on the VRam. I now keep experimenting with my offsets until i hit the point where the clock starts to lower itself again.

[ariceneo]

it is the deal how to over clock u must fine the sweet spot. as u are seeing right now it down clocking becasue one u are to hot. but at 78 u should be fine. or 2 need more voltage.
un evga click the voltage tab and set as u want  +13  +25 or +38 up to u but not always more = better. but right now it sounds like u are runnning in to the TDP or your card at your settings.

number one  set power target to max
number two  unlink the power and temp
number three set the temp to what u fell save at  87 is a ok number if u dont mind the fans.
number four up the voltage to what u feel safe at
now run a stress test see what is self overclocks to. should be about 1000 - 1020 or so with the voltage u picked.
now finde your max memory overclock safe
now find max core overclock with memory at stock
now take your  max memory and then core and  take about 3% off core and 1.5% off memory and see how it  runs should be stable if u did alright testing. and should be running every good

+ note if u have evey good cooler  that keeps the memory cool  overclock the memory more then the core , u see much more out the card.  my safe settings is  148 core and  425 memory  note under watercooling.
on stock it was 90 core 310 memory