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OC' my 2 GTX 480's under water.

post #1 of 22
Thread Starter 
So as i said i want to get some help OC'ing my 480's under water.


This is what im on currently. Stock voltage with 850/1700, i havent touched the memory yet and i dont know where to start. i can game for hours on these clocks but have not done any tests yet.



can i get a hand?

Edit: those temps are with a 26c ambient.
Edited by ThaJoker - 3/26/11 at 9:27pm
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post #2 of 22
What kind of rad do you have them puppies on? Also, if you have EVGA download OC Scannner to test with unlock power draw for at least 10 minutes, if not EVGA, download OCCT and use the GPU scanner on complexity level 6 I believe is the highest.
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post #3 of 22
Thread Starter 
Quote:
Originally Posted by Tom1121 View Post
What kind of rad do you have them puppies on? Also, if you have EVGA download OC Scannner to test with unlock power draw for at least 10 minutes, if not EVGA, download OCCT and use the GPU scanner on complexity level 6 I believe is the highest.
i have em on an RX480 and RX240. Theyre gigabyte graphics cards, but i'll do the occt.
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post #4 of 22
When I had 1 under water it did 920/2100 without trouble. On air it only goes to 800/2000.
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post #5 of 22
Thread Starter 
Quote:
Originally Posted by robbo2 View Post
When I had 1 under water it did 920/2100 without trouble. On air it only goes to 800/2000.
what voltage?
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post #6 of 22
It was close to the max allowed in afterburner I believe. Temps were still great so I ran it 900/2050 24/7. But I can't remember the voltage sorry.
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post #7 of 22
Thread Starter 
Someone help me . !! How do I start prodding? Do I pick a setting say 900/ core and test and then up the voltage ? What about memory and stuff ? What's the process of overclocking this thing .
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post #8 of 22
Quote:
Originally Posted by ThaJoker View Post
Someone help me . !! How do I start prodding? Do I pick a setting say 900/ core and test and then up the voltage ? What about memory and stuff ? What's the process of overclocking this thing .
Set memory to 2050MHz in Afterburner as going higher would cause artifacts (maybe you can go to 2100MHz)..

Then set 900MHz core and set voltage to 1.088V and test it with Heaven benchmark, 3DMark 11 (use demo loop for testing) and Crysis (or Warhead) benchmark loop..

If you pass all of those then you're OK,if not then upp Vcore to 1.100V and test again..

If you're not using full cover block for GTX480 then you'll have trouble with VRM (Voltage Regulator Modules) overheating when pushing voltages..

My stock cooled Zotac GTX480 does 850/1025MHz rock solid with 1075mV but if I push voltage higher my VRM's overheat and card crashes regardless of the fact that my GPU is capable of higher speeds and temps are 85C max in games/3DMark11/Heaven etc..

CHEERS..
     
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post #9 of 22
If you run OCCT you won't be able to do it with SLI enabled, the best way to do it would be to plug one monitor into each card and turn off SLI and run OCCT with complexity of 2-4 (not 8, trust me 2-4 will error a card that passes with complexity 8) and move it to the monitor corresponding to each card and test them individually.
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post #10 of 22
Thread Starter 
Quote:
Originally Posted by KingT View Post
Set memory to 2050MHz in Afterburner as going higher would cause artifacts (maybe you can go to 2100MHz)..

Then set 900MHz core and set voltage to 1.088V and test it with Heaven benchmark, 3DMark 11 (use demo loop for testing) and Crysis (or Warhead) benchmark loop..

If you pass all of those then you're OK,if not then upp Vcore to 1.100V and test again..

If you're not using full cover block for GTX480 then you'll have trouble with VRM (Voltage Regulator Modules) overheating when pushing voltages..

My stock cooled Zotac GTX480 does 850/1025MHz rock solid with 1075mV but if I push voltage higher my VRM's overheat and card crashes regardless of the fact that my GPU is capable of higher speeds and temps are 85C max in games/3DMark11/Heaven etc..

CHEERS..


will do. ill report back when i get home from work.
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Hard DriveOptical DriveOSMonitor
128G SSD + F3 1Tb LG BluRay Windows 7 Pro x64 Acer 24inch Led 16:9 
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