Caporegime
depends on each gpu,some use more some use less,mine is 1.135v stock v
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How to overclock a 7850 past 1050MHz?
- Thread starter 555BUK
- Start date
depends on each gpu,some use more some use less,mine is 1.135v stock v
That seems very high for a stock voltage !
What's your ASIC ?
For reference, my stock voltage is 1038 with an ASIC of 86%
I'm pretty sure GPU tweak doesn't read the voltage correctly on MSI cards. I have an MSI TF IV and whatever I set the voltage to in Afterburner, GPU tweak and Trixx show 1210 as the voltage. I know that the voltage adjustments in Afterburner are working due to increased OC stability and temperature. Afterburner should have the correct reading.
I tried that and was greeted by my screens turning weird colours with lines running across. Would you recommend I try upping the core bit by bit instead?
My Afterburner says i'm at 1210 aswell. Is this quite high? What is the highest and lowest you would recommend?
Thanks
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Yeah start at stock again and up it bit by bit to see what ends up being stable.
Every card is different so it's a matter of trial and error.
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Umm, at 1210/5500/1180 I get a lower heaven score than 1220/5500/1205, why is that? 1444 vs 1425
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is that an average score or just one heaven run on different voltages?
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Been having a play with my Sapphire HD 7850 OC Edition using Trixx and I've hit the wall at 1250/5800 which is up from stock 920/5000.
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In CCC Overdrive, do i just slide the sliders up yo the max that they can go?
Soldato
Seem to have hit the wall at 1210/5800 at 1.225V. Tempted to go for the Asus rom purely for more voltage. Maximum temps at a chilly 48C with an ACTTII 
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It seems like going past 1220/5500 to 1230/5500 and 1235/5500 brings heaven benchies down from 1466 to 1325, I wonder why, will post more screenies soon
Permabanned
Because of memory correction. Big overclocks and willy waving scores mean nothing if you end up loosing performance. Each card has different limits that is why some members have said in the thread do the overclock properly and then you can see when memory correction kicks in.
1240/5460
http://img502.imageshack.us/img502/4996/heaven2012070421140980.jpg
Please keep images within 1024px
http://img502.imageshack.us/img502/4996/heaven2012070421140980.jpg
Please keep images within 1024px
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Can't say I have, may need to be RMA'd but wait for other guys on here to voice their opinions too just in case I'm jumping the gun.
Going to have to RMA mine too, I get a black screen when I try to log-in unless I leave the PC alone for at least 10 seconds on the log-in screen which doesn't seem quite right, tried various drivers and it keeps happening.
Tried other GPUs too in the machine and it only happens with the 7850.
Soldato
I had this for a while in the top left corner, changed to the 12.7 betas and it seemed to disappear.
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Just bought a Asus 7850 directcu2 (dc2-2gd5).
I've installed asus gpu tweak (latest version) and noticed that the default voltage is quite high, namely 1.21 volts.
I've read here that this is the case for some cards, but is there any way to get it any lower?
Asic quality is 68,7
Did run the above settings for 15 minutes on furmark and 2,5 hours on 2dmark2011 without errors!
Temps don't go over 60 degrees celcius and fan speed is around 50%,
I've installed asus gpu tweak (latest version) and noticed that the default voltage is quite high, namely 1.21 volts.
I've read here that this is the case for some cards, but is there any way to get it any lower?
Asic quality is 68,7
Did run the above settings for 15 minutes on furmark and 2,5 hours on 2dmark2011 without errors!
Temps don't go over 60 degrees celcius and fan speed is around 50%,
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I've been tinkering with mine for the past few days. I first tried bringing the voltage down a notch to see if it could cope with lower volts but anything below stock (1210) and my card threw a wobbler! So on stock volts I gradually went up to 1100 clock using Trixx (only program that let me do this)which seemed fine and stable until I booted yesterday and got a boot failure message. Upping the memory causes screen flickers and general instability and so now it seems i'm stuck to 1050 clock and stock memory. Guess I got a poor clocker Still it's a good card and better than my 560ti!
Still it's a good card and better than my 560ti!
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I got the Powercolor 7850 pcs+ yesterday (This week only) and have only been testing with 3dmark11 at the moment (so not really stress tested). 1200/1400 seems to be the sweet spot at the moment as I havent played with any voltage adjutments. At 1210 I get random driver recovered messages. Any higher then 1400 on the memory and the scores start to go down.
Asic Quality 81%
EDIT: I set Powertune +20% and now I can hit 1500 on the memory and boosts 3dm11 score quite abit. 1210 on the core, but didnt effect score much. Will move on to other benchmarks/games soon but presently im well chuffed withthis card. Runs very quiet and cool.
Asic Quality 81%
EDIT: I set Powertune +20% and now I can hit 1500 on the memory and boosts 3dm11 score quite abit. 1210 on the core, but didnt effect score much. Will move on to other benchmarks/games soon but presently im well chuffed withthis card. Runs very quiet and cool.
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