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How to overclock a 7850 past 1050MHz?
- Thread starter 555BUK
- Start date
Fresh install of Windows 8 on my spanking new SSD. 
Cat 12.3 drivers in, with the corresponding CAP 1.
Sliders to 1050 / 5600 on stock volts for now.
Heaven is on a loop now and all seems well. ~97% GPU usage and the fan is at 51% / 68oC.
The old Q6600 doesn't seem to be holding it back, at least in Heaven anyway. Obviously games may be a different story!
Cat 12.3 drivers in, with the corresponding CAP 1.
Sliders to 1050 / 5600 on stock volts for now.
Heaven is on a loop now and all seems well. ~97% GPU usage and the fan is at 51% / 68oC.
The old Q6600 doesn't seem to be holding it back, at least in Heaven anyway. Obviously games may be a different story!
Soldato
Fresh install of Windows 8 on my spanking new SSD.
Cat 12.3 drivers in, with the corresponding CAP 1.
Sliders to 1050 / 5600 on stock volts for now.
Heaven is on a loop now and all seems well. ~97% GPU usage and the fan is at 51% / 68oC.
The old Q6600 doesn't seem to be holding it back, at least in Heaven anyway. Obviously games may be a different story!
Bah! ALmost done reinstalling, SC2 takes an age to update! Shall retry my efforts then!
Soldato
- Joined
- 30 Sep 2005
- Posts
- 16,688
That's better
Let heaven loop a couple of times on the demo before benchmarking
FPS: 55.1
Scores: 1388
Min: 37.7
Max: 113.3
Eat that 580 owners
1150
5800
1.215v
Let heaven loop a couple of times on the demo before benchmarking
FPS: 55.1
Scores: 1388
Min: 37.7
Max: 113.3
Eat that 580 owners
1150
5800
1.215v
Soldato
I have never oc a gpu before in my life....
I always just leave them as I am scared to screw things up.
Is it really easy to overclock these cards?
I remember once I tried with my 3870x2, using the ccc to overclock, but somehow managed to screw something up to the point where the refresh rate was stuck at 59hz.... that scared the **** out of me, and so I vowed never to attempt to overclock again.
However with these cards quite cheap and if they overclock well then it may be worth saving money and getting one of these over a 7870 or a 7950....
Thing is at these kind of overclokcs 24/7 are they stable? Can you just set the clocks and be done with it, or do you always have to set the clocks whilst running programs....
All I want is to overclokc it and thenforget.. dont want programs running at boot up etc..
I always just leave them as I am scared to screw things up.
Is it really easy to overclock these cards?
I remember once I tried with my 3870x2, using the ccc to overclock, but somehow managed to screw something up to the point where the refresh rate was stuck at 59hz.... that scared the **** out of me, and so I vowed never to attempt to overclock again.
However with these cards quite cheap and if they overclock well then it may be worth saving money and getting one of these over a 7870 or a 7950....
Thing is at these kind of overclokcs 24/7 are they stable? Can you just set the clocks and be done with it, or do you always have to set the clocks whilst running programs....
All I want is to overclokc it and thenforget.. dont want programs running at boot up etc..
Soldato
When you right click on the ccc in the task centre is it normal to see your card listed 5 times?
Soldato
Yup, it's the different outputs on the back.
My CCC always seemed to detect one more card than I actually had.. never found out why. Uninstalled CCC now though, kept causing my whole system to freeze then restart.
Soldato
- Joined
- 30 Sep 2005
- Posts
- 16,688
You can run the core up to 1050 using the standard AMD Catalyst drivers. Usually you leave it on 24/7, unless you can be bothered to go in and change it each time before a game.
If you want the best out of the card you have to use the ASUS GPU Tweak. Luckily it runs at startup on default settings. Prior to playing a game all you have to do is click on it and select your saved profile. When you have finished, just click the default button.
This is best as you don't really want an OC when idle in windows
Soldato
This is driving me spare. Can't see what is going wrong here. At this rate I'll be back to my 570
Soldato
- Joined
- 30 Sep 2005
- Posts
- 16,688
what problems are you having?
Soldato
Well beyond the initial not being able to clock it, starcraft 2 is incredibly choppy and keeps recommending 'medium' settings. This should handle ultra. My old 570 did and performance wise they should be par for par! Just tried the beta drivers, no change.
1275MHz was only stable with fan on 80% and 1.2v. Temps and noise are far too hot on the reference cooler to keep it that high. It was completely stable (survived looped Heaven and BF3), but the cost to my ears and risk of a quick death were far too high.
24/7 clocks of 1200MHz requires 1.150v. My card does 1125MHz on stock volts of 1.075v. Perhaps I got a good one that makes several other rubbish cards in the past.
Soldato
The plot thickens, taken from toms hardware:
Unfortunately, our in-depth evaluations in two different labs at opposite ends of the world turned up a handful of unexpected issues, too. Igor Wallsosek in our German office reports back with a lot of Radeon HD 7850-related issues: NewTek’s LightWave crashes with 4x AA or higher, Autodesk’s 3ds Max crashes in DirectX mode, and the card is incapable of running StarCraft II at its stock clocks
Oh dear. WHy did I not see this before? I wonder if this is a driver issue?
Unfortunately, our in-depth evaluations in two different labs at opposite ends of the world turned up a handful of unexpected issues, too. Igor Wallsosek in our German office reports back with a lot of Radeon HD 7850-related issues: NewTek’s LightWave crashes with 4x AA or higher, Autodesk’s 3ds Max crashes in DirectX mode, and the card is incapable of running StarCraft II at its stock clocks
Oh dear. WHy did I not see this before? I wonder if this is a driver issue?
Just as well I didn't use NewTek’s LightWave, Autodesk’s 3ds Max, or play Starcraft at STOCK setting's then
.I have read plenty of 7850 reviews and very few complain of any problems. Probably just more AMD launch driver glitches. Duff cards don't take 8xAA to show up hardware issues. The fact all is fine before adding 4xAA+ definately looks like beta a driver pronlem.
Soldato
Yup, I've started running those settings for 24/7 myself.
1290 is totally stable at 1.225V but the voltage increase to go from 1200 -> 1290 isn't worth the extra heat and noise for me.
Running 1200 @ 1.15V I get 67C max and 49% fan, which is lovely.
@welshdragon - Yup that just sounds like driver teething issues to me.
Soldato
- Joined
- 30 Sep 2005
- Posts
- 16,688
mmmmm, I'm getting 65c / 49% fan on 1.225v? Perhaps that's due to the twin fans on the sapphire?
oh, I also have CCC installed. Should I un-install it?
I'm having to go to 1.15V just to get 1100.
I don't know if it's a bad clocker or just bad airflow through my case.
61% fan and 80oC after a couple of runs through heaven at these settings seems a bit high. Has to be my case if you lot are getting much cooler temps at similar settings?
Soldato
My MSI has twin fans.
But different fans run different speeds at different fan %'s.
Just done some testing and my card can actually do 1225MHz @ 1.15V, which is nice, so it seems it needs a pretty big jump in voltage to get from 1225->1290.
That gives me 68C @ 50% fan.
Time to give 1250 a go
(I just went straight from 1050 to 1290 when I got ASUS tweak fired up ^_^ )