I was getting this earlier on and then I had a crash so I bumped the voltage up slightly and it hasn't happened in the last couple of hours that I was playing Skyrim, although of course I'll need to keep it under load much longer to see if it is still an issue.
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How to overclock a 7850 past 1050MHz?
- Thread starter 555BUK
- Start date
I was getting this earlier on and then I had a crash so I bumped the voltage up slightly and it hasn't happened in the last couple of hours that I was playing Skyrim, although of course I'll need to keep it under load much longer to see if it is still an issue.
Soldato
My latest attempt guys, this one got a little toastie as you can see from the temps, will try and take the voltage back a bit as I just had an educated guess.
Just kept the above settings except bumped up the core to 1250, think the temps stayed the same as before. This card is a little beauty.
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Soldato
Last bench for now, wouldn't do 1300\5800 @1.225v so backed off the memory to 5400 and core to 1280 and got the above. Temp hit 87c which is getting too hot for my liking. Anyone know the thermal limit before the card would shut down, I know I could up the volts a fair bit yet, up to 1.3v I've read is safe but wow, not for me.
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Soldato
cheers mate, really impressed with this. As you know I had bought the 6970 Lightning but due to an 'error' I didn't get it so got the 7850 instead. Cant believe what this card does off one six pin power connector. Well pleased.
Soldato
Never thought about trying CCC but when I did i see I have the option to clock upto 1740mhz on the core?
Associate
Weird, CCC says 1840 here is my max on the GPU
Can't say I've ever used CCC for overclocking this card. Does it actually work now?
Can't say I've ever used CCC for overclocking this card. Does it actually work now?
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I tried that and I always get the same message in DOS.
format: atiflash -p <adapter num> <filename>
Basically since flashing I get what can be best described as juddering/tearing at the top of any web page as I scroll through forums. I am trying to eliminate it and have no idea what could be causing it as my SA700 monitor has the latest drivers as does the Logitech G700 mouse.
Maybe you entered the command incorrectly. Should be as follows:-How do I revert back to my HIS7850 Bios?
When I used the method on Page 43, I did save my rom and atiflash called it "Backup.rom" by default.
But when I run "atiflash -p -f backup.rom" I get an error.
I have renamed "backup.rom" to "his7850.rom" and run "atiflash -p -f his7850.rom" but nothing happens.
I'm afraid that my card may meet an early death like 555BUK's.
atiflash -p -f 0 backup.rom
You missed the "0" (zero) within your post.
My card works again! It is not dead, but something very strange happened to it.
I tested within a friends system, who also owns a 7850. When inserted on it's own, his motherboard will not post (same as mine), but when installed in crossfire as the secondary card it works absolutely fine. Corissfue runs flawlessly with expected fps increases and is reported correctly within CCC. However, when the card is used as the primary adapter (montior cables connected and in PCI-E #1), nothing happens.
Conclusion: ASUS GPU Tweak and GPU-Z somehow combined to corrupt my BIOS in a way that has made the card "half-dead". I now need to order a second 7850 so that I can get full use out of the other within an SLI setup.
Atleast I know the hardware is absolutely fine. It's just that the card does not report itself to PC BIOS correctly upon startup.
I tested within a friends system, who also owns a 7850. When inserted on it's own, his motherboard will not post (same as mine), but when installed in crossfire as the secondary card it works absolutely fine. Corissfue runs flawlessly with expected fps increases and is reported correctly within CCC. However, when the card is used as the primary adapter (montior cables connected and in PCI-E #1), nothing happens.
Conclusion: ASUS GPU Tweak and GPU-Z somehow combined to corrupt my BIOS in a way that has made the card "half-dead". I now need to order a second 7850 so that I can get full use out of the other within an SLI setup.
Atleast I know the hardware is absolutely fine. It's just that the card does not report itself to PC BIOS correctly upon startup.
Soldato
Very strange indeed, i'm sending back the Asus card I have and have ordered the HIS from today only, hopefully that will be quieter than the asus one 
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- 12 May 2012
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I get coil whine for 2-3 sek sometimes when i exit a game. Read some other post on sweclockers that someone there also hade coil whine. Dont know if it was all the time or just short periods
Caporegime
When you had it in xfire did you reflash the BIOS on your powercolor card? That's what you have to do or use two cards/onboard graphics so you can revive a bad BIOS,also fully clear mb cmos as it could have corrupted that too making gpu detection error ect
Caporegime
I tried that and I always get the same message in DOS.
format: atiflash -p <adapter num> <filename>
Basically since flashing I get what can be best described as juddering/tearing at the top of any web page as I scroll through forums. I am trying to eliminate it and have no idea what could be causing it as my SA700 monitor has the latest drivers as does the Logitech G700 mouse.
Tried winflash? I've used it plenty times n its been fine
Do you have Virtu enabled? That caused some weird juddering for me, both with my 7850 and GTX680.I tried that and I always get the same message in DOS.
format: atiflash -p <adapter num> <filename>
Basically since flashing I get what can be best described as juddering/tearing at the top of any web page as I scroll through forums. I am trying to eliminate it and have no idea what could be causing it as my SA700 monitor has the latest drivers as does the Logitech G700 mouse.
"atiflash -p -f 0 backup.rom" should definately work. What error message do you get?
I didn't try to reflash whilst in crossfire, but I have flashed the card back and forth many times, trying many BIOS's. I have now ordered another 7850 to play with. Perhaps I can fully revive my old card, but if not I will just use it as a secondary card within a crossfire setup. I personally think that some non-writable area of BIOS or firmware has been corrupted and that is why 4 different mobo's will not recognise it in standalone mode. All mobos simply do not see it at startup, but it can be seen once within Windows or from DOS.
Very, very strange.
I've RMA'd my PSU (AX850] due to coil whine and thought I'd try out my old 850w Antec. Before I struggled to over clock my 7850 past 1150mhz at max voltage (1225mV). With my old Antec I was able to get 1200mhz easily at 1190mV. I guess there was more that was wrong with the AX850 than just the coil whine?