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How to overclock a 7850 past 1050MHz?

Guys I'm trying to get my 7850 past 1050 using Asus GPU tweak and it's just not having it. I've ticked overclock range enhancement and advanced settings on the main panel etc and tried about 4 different versions of the program all to no avail.

I do have CCC installed but overdrive unticked so can anyone give me a version of asus that works for definite on windows 7 64 or explain what I'm doing wrong?
 
Release said:
Guys I'm trying to get my 7850 past 1050 using Asus GPU tweak and it's just not having it. I've ticked overclock range enhancement and advanced settings on the main panel etc and tried about 4 different versions of the program all to no avail.

I do have CCC installed but overdrive unticked so can anyone give me a version of asus that works for definite on windows 7 64 or explain what I'm doing wrong?
Click to expand...

Sounds silly, but you are pressing 'apply' after ticking the box? Sometimes I've had to untick it, press apply, then re-tick it, press apply to get it to come up.

I've done a fresh install lately and just grabbed the latest GPU tweek and it worked fine.
 
Release said:
Guys I'm trying to get my 7850 past 1050 using Asus GPU tweak and it's just not having it. I've ticked overclock range enhancement and advanced settings on the main panel etc and tried about 4 different versions of the program all to no avail.

I do have CCC installed but overdrive unticked so can anyone give me a version of asus that works for definite on windows 7 64 or explain what I'm doing wrong?
Click to expand...

ive found the only way i could get it to work was using version 2.0.8.3 (you can google it and find a download link)

i uninstalled any version i previously had.

restarted

installed 2.0.8.3

restarted

clicked the overclocking range enhancements and volt thing.

disabled amd overdrive

restart

then you should be all hunky dory.

(make sure no other OC programs are running the in the background)

i had gigabyte OC running in the background (didnt show in the right hand corner only in the processes thing)
 
TheLegendOfMart said:
Was running my crossfire pair at 1200/1500 1.21V but was getting minor corruption, backed them off to 1175/1475 and seems fine.

Guess that's what I get for using crap brands (Powercolor).
Click to expand...

i have the gigabyte wind force 2 OC edition (which when i bought i was told was one of the best ones to get)

at 1.21V the max i can get is 1100/1400 so i think yours is pretty good.

you could always up the volts a bit more (this thread has led me to believe up to 1.3 is all good)
 
Release said:
Guys I'm trying to get my 7850 past 1050 using Asus GPU tweak and it's just not having it. I've ticked overclock range enhancement and advanced settings on the main panel etc and tried about 4 different versions of the program all to no avail.

I do have CCC installed but overdrive unticked so can anyone give me a version of asus that works for definite on windows 7 64 or explain what I'm doing wrong?
Click to expand...

I'm having the same problem. It lets me up the voltage to 1225mV, but the GPU clock goes up to 1050Mhz max.
 
Managed to get mine to 1125/1400 1.225v stable.

I must just have a bad overclockable card. As others seem to be able to get much higher than that. Would my mobo have anything to do with it? Only have a B75
 
Guys I can't change the voltage on my cards through GPU tweak anymore. I have a Sapphire 7850 that I OC'd no prob about a year ago and recently picked up a HIS 7850 to crossfire. The problem is when i crossfired I lost the original OC.

Now the GPR clock maxes out at 1050mhz on the sapphire but on 1720mhz on the HIS. I have "overclocking range enhancement" selected in settings. And also the "core voltage" slider is gone and replaced by "power target(%)" ..... what's tat about?! Running GPU tweak ver:2.4.9.2


:EDIT: I've uninstalled the current version and installed ver:2.0.8.3 ... still the same.
 
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I'm still having difficulty OCing my cards. When OCing crossfire are you better syncing the cards so you overclock them simultaneously or doing them individually? Do the clocks have to match?

The prob was I could not unlock the voltage on either and could not unlock the core passed 1050mhz on the Sapphire. The slider will go up to 1720mhz on the HIS, obviously haven't tried setting it that high though!

I managed to get some access to voltages through Afterburner when I synced the cards but still couldn't move the core passed 1050. So I used GPU Tweak to set the clocks to 1100mhz on both cards, GPU-Z comfirmed and I launched Valley to test. Screen started flickering shortly there after and then system froze. Rebooted but screen kept flickering and got random blue screen. In the end had to boot in safe mode and uninstall afterburner. Haven't had a chance to do anything since. Voltage was at 1140v I think from memory.

Is it worth reinstalling Afterburner and trying again with higher voltage do you think? Surely there must be an easier way to do it rather than volts in afterburner and clocks in gpu tweak?!

My cards are HIS HD 7850 IceQ and Sapphire HD7850
 
No crossfirex here so maybe not helpful, but from my experience with the same HIS 7850 IceQ...

I can only adjust the voltage in the iTurbo software - did afterburner definitely increase the voltage on it? If not maybe it's crashing due to not enough volts? I had to check every time as sometimes they just didn't change.

Also I always use +20% power target as cooling isn't really an issue - otherwise it was a stuttery mess :(
 
I've had the most success using Sapphire Trixx to unlock the voltages. I can get my MSI 7850 to 1100 core at 1.180V, memory is a bit of a dud though only goes up to 1250 before it crashes Heaven.
 
Brian18741 said:
I'm still having difficulty OCing my cards. When OCing crossfire are you better syncing the cards so you overclock them simultaneously or doing them individually? Do the clocks have to match?

The prob was I could not unlock the voltage on either and could not unlock the core passed 1050mhz on the Sapphire. The slider will go up to 1720mhz on the HIS, obviously haven't tried setting it that high though!

I managed to get some access to voltages through Afterburner when I synced the cards but still couldn't move the core passed 1050. So I used GPU Tweak to set the clocks to 1100mhz on both cards, GPU-Z comfirmed and I launched Valley to test. Screen started flickering shortly there after and then system froze. Rebooted but screen kept flickering and got random blue screen. In the end had to boot in safe mode and uninstall afterburner. Haven't had a chance to do anything since. Voltage was at 1140v I think from memory.

Is it worth reinstalling Afterburner and trying again with higher voltage do you think? Surely there must be an easier way to do it rather than volts in afterburner and clocks in gpu tweak?!

My cards are HIS HD 7850 IceQ and Sapphire HD7850
Click to expand...
OC'ing cards within Xfire can be tricky, and cards never overclock as well as they would individually (at least not in my experience). In regards to your other questions, always run both cards in sync and disable ULPS if possible. You can also test the cards individually using Afterburner, Trixx, GPUTweak etc to confirm that they both have unlockable voltage, and how far they overclock. It may be that one card is voltage locked or overclocks poorly, or that each card uses different voltage controllers which confuse the overclocking software and result in no control. 1050MHz is pretty good for a dual card setup on stock volts, so don't be upset.
 
Looks like the HIS is voltage locked. Or at least it won't register anything above 1.181v on GPU-Z no matter what program I use. The HIS iTurbo software has given me the best results so far. I've settled with 1100mhz on the core at 1.181v. Had it up to 1175mhz but kept crashing.

1100mhz seemed stable last night, was able to bench Heaven and Valley a few times each, (will post results later when home if anyone is interested) but the real test comes tonight, I'll do a bit of gaming a see how far I get!
 
RIP 7850

For a time I had the fastest air-cooled 7800 in the world, benchable @ 1400MHz core. Today I found it lying wet and rusted within a pile of soaked boxes in my garage.

Best card I ever owned, and much more fun than anything currently available. 1300-1400MHz on air was pretty rare two-and-a-half years ago.
 
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