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[Official] The AMD Radeon 7800 Owners Club - Page 58

post #571 of 4099
Finally got around to overclocking my CFX setup a bit, this is a mild overclock to 1150/1350, perhaps once I get a better CPU I will consider overclocking a bit more, but for now it's more than enough.

345

http://www.techpowerup.com/gpuz/ccwk8/
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post #572 of 4099
Quote:
Originally Posted by Supranium View Post

Take a look what GPU-Z reads as voltage? Also, according to my multimeter readings, the Gpu Tweak voltage set does not set voltage correctly. Cards actual voltages are way bigger than GPU Tweak set.
On my 7850 1225mv set was around 1297mv actual reading. Im sure that its same case here. 1165mv 1330mhz is pretty much utopic.
Another argument is that generally all Pitcairns and Tahitis overclock about same way. 1.1v= 1100mhz, 1.2v=1200mhz and so on. It ofcourse varies depending on GPU leakage (ASIC quality) and cooling efficency, but this math is approximately still solid enough.
The cards i have tested so far:
HD7850 (81% asic) 1225mv (gpu tweak) 1240mhz benchable.
HD7950 (71.5% asic) 1300mv 1275mhz benchable.
HD7970 (77.8% asic) 1300mv 1315mhz benchable.
All cards on stock cooler, around 20C ambient and fans on 100% during benchmarks.

Wow, great info!!

I tested the gpu-volts with GPUz.. here's the screenie. As you can see, the volts in GPU-Tweak are correct.

316
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post #573 of 4099
OK. Looks like GPUz takes its reading from same place then. Great card you have there! 1265mhz benchable is very good for 7850. Lets keep in mind that this card only has one 6pin PCI-e power connector and it can score 7100+ on 3dm11 biggrin.gif
post #574 of 4099
Quote:
Originally Posted by Supranium View Post

OK. Looks like GPUz takes its reading from same place then. Great card you have there! 1265mhz benchable is very good for 7850. Lets keep in mind that this card only has one 6pin PCI-e power connector and it can score 7100+ on 3dm11 biggrin.gif

Indeed, great bang-for-your-buck if every card would clock this well!

Just need to find a way to break through the voltage wall in GPU-Tweak.. I read Anandtech got up to 1.3v on the 7800 series.. wouldn't mind pushing the voltage further than 1165 and seeing if 1400+Mhz is achievable smile.gif
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post #575 of 4099
anyone know if the thermalright shaman cooler would fit on the 7850?

the caps appears it may get in the way of the heatpipes.
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post #576 of 4099
@Dchat, try to test with Vantage and let GPU-Z monitoring in background then after finishing test look at GPU-Z and please give us SS again smile.gif Is it still read correct volt? Dont forget to set Max voltage monitoring in GPU-Z.
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post #577 of 4099
Quote:
Originally Posted by neoroy View Post

@Dchat, try to test with Vantage and let GPU-Z monitoring in background then after finishing test look at GPU-Z and please give us SS again smile.gif Is it still read correct volt? Dont forget to set Max voltage monitoring in GPU-Z.

Sorry, I don't have Vantage. And how do you set Voltage Monitoring to MAX in GPU-Z??

Or do you mean "Show Highest Reading" of VDDC monitoring? If you mean that, even after a 15minute burn-in benchmark from Furmark, the highest reading is still 1.150v.
Edited by DChat - 4/17/12 at 12:41pm
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post #578 of 4099
Quote:
Originally Posted by DEW21689 View Post

56*C isn't high depending on your loads. Also depending on what you have running certain programs will lock your clocks at certain speeds. For example my 5870 would downclock and lock to 400/900 no matter what I did so long as I left say... Youtube open.
Quote:
Originally Posted by DEW21689 View Post

That entirely depends on what the clocks are sitting at.... If they are sitting at fully idle (300/150 for me) then yes they are to high, if the card is being locked at a higher clock speed then no not really. Oh and ambient temps can be a pretty big factor.

Mine does noe downclock. WHatever I do, if it's to open a non-graphically intensive program to just a simple webpage, the clocks spike to the normal clocks, not the 2D clocks.
56*C on "idle" is not good. If it wasn't for my current airflow, I'd have close to 70*C right now. No matter how you slice it and dice it, this is not normal and the card should not be doing this.
I've tried other monitoring programs and even reinstalled the drivers to the same results. As of right now, my card is at 54*C with it mostly being 1000/1200 clocks, when they should be lower while using non-intensive programs.
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post #579 of 4099
Quote:
Originally Posted by AuraNova View Post

Mine does noe downclock. WHatever I do, if it's to open a non-graphically intensive program to just a simple webpage, the clocks spike to the normal clocks, not the 2D clocks.
56*C on "idle" is not good. If it wasn't for my current airflow, I'd have close to 70*C right now. No matter how you slice it and dice it, this is not normal and the card should not be doing this.
I've tried other monitoring programs and even reinstalled the drivers to the same results. As of right now, my card is at 54*C with it mostly being 1000/1200 clocks, when they should be lower while using non-intensive programs.

Ah they are idle temps but your card is "idling" at 1000/1200?... Are you POSITIVE you have nothing running that could lock the clocks higher up? Is it a clean install of windows or did you make positive any previous video card drivers were removed?
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post #580 of 4099
Quote:
Originally Posted by AuraNova View Post

Mine does noe downclock. WHatever I do, if it's to open a non-graphically intensive program to just a simple webpage, the clocks spike to the normal clocks, not the 2D clocks.
56*C on "idle" is not good. If it wasn't for my current airflow, I'd have close to 70*C right now. No matter how you slice it and dice it, this is not normal and the card should not be doing this.
I've tried other monitoring programs and even reinstalled the drivers to the same results. As of right now, my card is at 54*C with it mostly being 1000/1200 clocks, when they should be lower while using non-intensive programs.

Boot up in safe mode and check temps. That way you'll know if is a service or an application that is causing the problems.
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