Overclocking 7770 GHz Edition.

[Digimortal]

Hello there.

I'm kind of a newb to overclocking (started late) and some months ago at last I got a new rig.

So I wanted to overclock my Sapphire 7770 GHz edition a bit.
(don't want to burn it cause I'll be left with a gigabyte 6670 for many months xD)

I came here to ask for help so I won't mess everything up on my own.

Thanks in advance.

 

[Josh Weston]

Use software such as MSI Afterburner. Slowly raise the clocks by, say, 50MHz and use Unigine: Heaven to test for stability. Repeat until you find instability, then return to your previous clock.
Core clock is far more important than memory clock.
Keep an eye on the card's temperatures (Afterburner has this built in), and don't let the card get too hot.
If you do want to play around with the volts, do so slowly. I wouldn't advise going too far over 1.2v.

 

[Digimortal]

Thank you for the fast reply.

I would try to do that slowly cause I also believe it's the best and safest way to overclock anything.

I understand Unigine is a benchmark tool but how should I know that the gpu is unstable?
Will the benchmark crush or anything?

 

[FTR.4500MHz]

When your overclock isnt stable the benchmark will crash or freeze in most cases.

 

[Digimortal]

Thanks for determining that cause I was hesitant about it.

Also Josh said to use afterburner.
My gpu is sapphire and they have the trixx tool.
Is the afterburner better from trixx?

I'm asking too many questions to be sure.

 

[FTR.4500MHz]

AB monitors your temps and Trixx does not iirc.

 

[SirDeltaRick]

I have the Sapphire Vapor-X GHZ 7770 GHz Edition. For some reason, i can't overvolt in msi-afterburner.

 

[Josh Weston]

I have the Sapphire Vapor-X GHZ 7770 GHz Edition. For some reason, i can't overvolt in msi-afterburner.

I take it you've gone into the settings and enabled voltage control?
If not:
Right click the AB icon on your desktop and open file location. There's a CFG file near the top called MSIAfterburner. Click it, and it will open Notepad. Scroll down until you reach

UnofficialOverclockingEULA =
UnofficialOverclockingMode = 0

And replace it with

UnofficialOverclockingEULA = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode = 1

Close (and save) the document, then go back into AB. With any luck, this should have unlocked the voltages.

 

[Lystfiskern]

Josh Weston has already covered almost all.
Be sure to use the lates drivers for your card. AMD has the official 13,1 out and there is also a 13,2 beta 5 out.

I see in other tests they have managed to go from the "stock oc" at 1100MHz/1300MHz to clocks at 1200/1475.
Other ones also suggest that Sapphire has managed to find a very good oc for 24/7-use!
Follow Westons instructions and U could maybe use the 1200/1475 as a "close-to-goal-point" and then try to tweak just a lille bit further (increments of 5)..... Tho I dont think there will be anything significant more to gain...
Try to keep the voltage down as this in most cases does very little for performance in comparason to the increased temps on the card. Id say dont go over 1,2.

The brand new 3DMark is another test-suite u should take a look at, and of course the old trusty Prime95 for general overclocking & stability.

Edited.

 

[Josh Weston]

I see in other tests they have gone from the "stock oc" at 1100MHz/1300MHz and used clocks at 1200/1475.
U could use this as a referencepoint and then try to tweak them just a lille bit further (increments of 5)..... Tho I dont think there will be anything significant more to gain...

The brand new 3DMark is another test-suite u should take a look at, and of course the old trusty Prime95 for general overclocking & stability-test for both gpu,cpu and mem.

Prime 95 for GPU stability?

 

[Lystfiskern]

Prime 95 for GPU stability?

eeeh...ok u got me there

 

[Digimortal]

Another question I'd like to make (a bit off-topic) is about CPU overcloking.
My MB is Gigabyte z77x-d3h and I have the easyTune6. Tried to auto oc the cpu to 4.3GHz but then I think it was unstable.
When I turnt on or restarted my pc it turnt on for 2 secs then shut off and then again started and everything seemed to be normal.

I got the factory settings back and now it's ok.
I think it wasn't normal to do that when it turnt on but wanted to ask here too to be sure.
Also what is the best way to oc the cpu and how to test the stability.