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pushing Sapphire radeon hd 6850 to the max

post #1 of 8
Thread Starter 
the stock core was 775 mem core was 1000 and voltage was 1.150
Capture

i used msi kombuster to check stability for lack of something better here are the scores i got. not sure how good these scores are because i don't have anything to compare too

Capture stock

and here are the new o/c setting

Capture 2

and the new kombuster scores like i said i have no reference so any input would be appreciated

nmghm:thumb:
post #2 of 8
Here is what im rocking at this moment on stock voltage.
78q.png

My cards are water cooled tho have a look here.
http://www.overclock.net/t/1203636/amd-ati-gpu-mod-club-aka-the-red-mod
Can get 1055mhz Core with 1.249V
post #3 of 8
Thread Starter 
what temps do u get
post #4 of 8
You guys are putting me to shame. I'm at 980, 1.28v and still getting errors using OCCT. frown.gif
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My gaming desk
(14 items)
 
Miner
(15 items)
 
 
CPUMotherboardGraphicsRAM
AMD FX-8350 ASUS Sabertooth 990FX Sapphire 290x Patriot Viper Extreme Division 4 
Hard DriveHard DriveCoolingCooling
OCZ Vertex 460 WD 1TB Blue Koolance 380A EK-FC R9-290X 
OSMonitorKeyboardPower
Windows 8.1 64-bit Monoprice 27" IPS-Glass Pro Panel DUCKY! Antec HCP 850W 
CaseMouse
Hand built wooden desk Logitech G700S 
CPUMotherboardGraphicsGraphics
AMD A10 7850K ASUS A88X-Pro Sapphire 280x Sapphire 280x 
RAMHard DriveHard DriveCooling
Patriot Viper Xtreme Div4 1866mhz 60GB Vertex2 WD Caviar 500AAKS XSPC Rasa 
OSPowerCase
Windows 7 64 bit EVGA 1000W G2 Thermaltake Level 10 GTS 
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post #5 of 8
Quote:
Originally Posted by Paulstin1 View Post

what temps do u get

Idle 25-28C
Full load 42-46C
Quote:
Originally Posted by Krusher33 View Post

You guys are putting me to shame. I'm at 980, 1.28v and still getting errors using OCCT. frown.gif

Here is a tip, These cards like running cool.
They hit a stability wall at 60C then another one at 75C
If you can keep it under 75C you should be able to do 980mhz stock voltage, If you keep it under 60C you should be able to do 1000mhz stock voltage.

More voltage raises the temp walls and cores overclock head room but it also raises the temp quite a bit so that might be where your problem is.
post #6 of 8
Quote:
Originally Posted by bmgjet View Post


Here is a tip, These cards like running cool.
They hit a stability wall at 60C then another one at 75C
If you can keep it under 75C you should be able to do 980mhz stock voltage, If you keep it under 60C you should be able to do 1000mhz stock voltage.
More voltage raises the temp walls and cores overclock head room but it also raises the temp quite a bit so that might be where your problem is.

My temps are high. I don't have much money and all I got is an Accelero S1 v2. I could slap a couple a fans on it. Think that would make much of a difference?
My gaming desk
(14 items)
 
Miner
(15 items)
 
 
CPUMotherboardGraphicsRAM
AMD FX-8350 ASUS Sabertooth 990FX Sapphire 290x Patriot Viper Extreme Division 4 
Hard DriveHard DriveCoolingCooling
OCZ Vertex 460 WD 1TB Blue Koolance 380A EK-FC R9-290X 
OSMonitorKeyboardPower
Windows 8.1 64-bit Monoprice 27" IPS-Glass Pro Panel DUCKY! Antec HCP 850W 
CaseMouse
Hand built wooden desk Logitech G700S 
CPUMotherboardGraphicsGraphics
AMD A10 7850K ASUS A88X-Pro Sapphire 280x Sapphire 280x 
RAMHard DriveHard DriveCooling
Patriot Viper Xtreme Div4 1866mhz 60GB Vertex2 WD Caviar 500AAKS XSPC Rasa 
OSPowerCase
Windows 7 64 bit EVGA 1000W G2 Thermaltake Level 10 GTS 
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My gaming desk
(14 items)
 
Miner
(15 items)
 
 
CPUMotherboardGraphicsRAM
AMD FX-8350 ASUS Sabertooth 990FX Sapphire 290x Patriot Viper Extreme Division 4 
Hard DriveHard DriveCoolingCooling
OCZ Vertex 460 WD 1TB Blue Koolance 380A EK-FC R9-290X 
OSMonitorKeyboardPower
Windows 8.1 64-bit Monoprice 27" IPS-Glass Pro Panel DUCKY! Antec HCP 850W 
CaseMouse
Hand built wooden desk Logitech G700S 
CPUMotherboardGraphicsGraphics
AMD A10 7850K ASUS A88X-Pro Sapphire 280x Sapphire 280x 
RAMHard DriveHard DriveCooling
Patriot Viper Xtreme Div4 1866mhz 60GB Vertex2 WD Caviar 500AAKS XSPC Rasa 
OSPowerCase
Windows 7 64 bit EVGA 1000W G2 Thermaltake Level 10 GTS 
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post #7 of 8
I should study this. My Sapphire 6850 is still at stock, are these things meant to be overclocked? 750 to 1000, damn
post #8 of 8
Quote:
Originally Posted by Krusher33 View Post

My temps are high. I don't have much money and all I got is an Accelero S1 v2. I could slap a couple a fans on it. Think that would make much of a difference?


Get as many fans as you can on it. The Accelero S1 v2 isnt really any better then stock since it uses only 4 heat pipes like stock but it does have a size advantage.
Quote:
Originally Posted by NuclearSlurpee View Post

I should study this. My Sapphire 6850 is still at stock, are these things meant to be overclocked? 750 to 1000, damn

Seems like they are made for it and the only reason ATI/AMD used lower clocks is to lower there power usage and fill a gap in the performance.
Once you get around 1ghz on the core they are comparable to the 6870 in anisotropic filtering. And slightly better then a 6970 at anti-aliasing.
But being overclocked that much your using as much power as a 6950.

My 2 of them handle BF3 ultra with 4X AA at 1080 no problem. At stock clocks tho I have to turn off the AA.
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