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Best Overclock - HD6850

post #1 of 9
Thread Starter 
Hey guys! Wasn't sure where to ask this so I decided to make a new thread. So as the topic says, what was the maximum OC you could get on this card?

Core: 950
Memory: 1150
Voltage: 1.150 (Stock)
Temperature: 79° (Full load)
Fan speed: 51% (Full load)

is what I managed to achieve on my ASUS EAH6850 with stock voltage. I am sure this is not the limit. I just like the round numbers tongue.gif By the way, is 79° acceptable temp or should I bother trying to cool it with extra fans or increse the GPU fan speed?

gpuoc.png
Edited by XSCounter - 4/12/11 at 9:29pm
post #2 of 9
I'm running my Sapphire HD6850 at 950/1220 on stock voltage. 79c is perfectly fine, mine tops 85c at furmark with the fan spinning ~1600rpm. I think comparing RPMs and especially percents is pointless though, because the fans and the percent/RPM-ratio vary a lot. In my case, the fan @ 1600rpm makes roughly as much noise as a Gentle Typhoon at 1200rpm.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II B55 M4A785TD-V Evo Sapphire HD6850 A-Data 2x2GB 
Hard DriveMonitorKeyboardPower
Samsung HD502HJ Samsung 226BW Sidewinder X4 Corsair VX550 
Case
Antec 300 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II B55 M4A785TD-V Evo Sapphire HD6850 A-Data 2x2GB 
Hard DriveMonitorKeyboardPower
Samsung HD502HJ Samsung 226BW Sidewinder X4 Corsair VX550 
Case
Antec 300 
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Reply
post #3 of 9
Hi, I also have Sapphire HD6850, can you tell me how did you menage to get 950/1220 on stock gpu?? drool.gif
And pls, explain in detal (what programe and what to do), cause I'm kinda new at this biggrin.gif
post #4 of 9
Welcome to the forums!
First off, you are usually unlikely to get a reply when you post on an old thread like this, but no worries smile.gif

Maximum overclocks will be different for every card, it is just luck of the draw how far you are able to overclock your card. That being said the HD 6850 usually has a massive amount of overclocking headroom, I have one that will do 935/1150 on stock voltages, and I'd say most should get to 900mhz quite easily.

As far as the process, check out the AMD GPU Overclock Guide here (I reccomend running a few passes of 3DMark 06 to stress test as well as GPUTool, as GPUTool isn't too great at finding stability on cards past the HD4k series). If you have any questions, I'll do my best to answer them.
post #5 of 9
Ty coffeejunky, I'll read and try it... And post replay on how i did smile.gif
post #6 of 9
Please follow the method described in this thread in order to check if your OC is error free. 6850's overclock very nicely, you have a great budget card in hands.
Black Box
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500 GA-H67MA-USB3-B3 MSI Cyclone 6850 OC 1GB 16 GB Corsair Value DDR3/1333 
Hard DriveOptical DriveOSMonitor
3 TB Seagate Sata 2 Asus DVDR/CDR Windows 7x64 Samsung 932BW 
KeyboardPowerCaseMouse
Microsoft XFX Easy Rail 550W Antec Gamer 300 Microsoft 
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Black Box
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500 GA-H67MA-USB3-B3 MSI Cyclone 6850 OC 1GB 16 GB Corsair Value DDR3/1333 
Hard DriveOptical DriveOSMonitor
3 TB Seagate Sata 2 Asus DVDR/CDR Windows 7x64 Samsung 932BW 
KeyboardPowerCaseMouse
Microsoft XFX Easy Rail 550W Antec Gamer 300 Microsoft 
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post #7 of 9
Hmmm... I already did everything from this thread: http://www.overclock.net/t/633816/how-to-overclock-your-amd-ati-gpu
But, I got a problem... System is stable on: Core 975 / Memory 1130, under GPU Stress, Furmark and MSI Kombustor... Also I played COD Modern Warfare 3, no problems...
But, when I restart my computer, vga stats fall to: 600/1000...
I checked "apply overclocing on system startup, start with windows and start minimized", but it just doesn't...
What to do?? confused.giffrown.gif
post #8 of 9
Quote:
Originally Posted by JA90 View Post

Hmmm... I already did everything from this thread: http://www.overclock.net/t/633816/how-to-overclock-your-amd-ati-gpu
But, I got a problem... System is stable on: Core 975 / Memory 1130, under GPU Stress, Furmark and MSI Kombustor... Also I played COD Modern Warfare 3, no problems...
But, when I restart my computer, vga stats fall to: 600/1000...
I checked "apply overclocing on system startup, start with windows and start minimized", but it just doesn't...
What to do?? confused.giffrown.gif

Do they go up when in-game? You can check with GPU-z. It could just be powerplay (a power saving feature).
post #9 of 9
I checked with GPU-Z.0.5.5 when I started system... Tried it 3-4 times... and he always lowers it...
Where can I disable that function if it's on??
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