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Stock 6950 MAX OC ??

post #1 of 4
Thread Starter 
Hi every one,

I have a stock XFX 6950 2G video card, I'm not increasing volts by applying a BIOS update, I just want to OC the cards GPU and memory at stock voltage, however I'm not sure where the limit is?

I read a few gusy posting at 900Mhz CPU and 1400Mhz memory, but is this really the limit or should I aim lower\\higher?

I'm also wondering how I should test stability.... can I use Prime95, same as my CPU OC? or is there another peace of software I can use?

Thanks!
Edited by thestef - 5/14/11 at 12:45pm
My AMD/ATI build
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My AMD/ATI build
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OCZ Vertex 2 Windows 7 Home 42 Inch Panasonic 1080p Plasma Antec Truepower 750W 
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post #2 of 4
Can't help with the OC side as I have never owned that card let alone OC'd one, but I can help with the benching.

Try downloading Furmark.

You can also use MSI Afterburner but I do not personally rate this.

For monitoring card sensors use GPU-Z.

SiSoft Sandra is also another very powerful all-round benchmarking tool which is very good which I would suggest using, here.
 
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OCZ Fatal1ty 750w Silverstone Raven RV-02-W 
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E8400 E0 Gigabyte G31M ES-2L HD 5670 4 GB generic value RAM 
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post #3 of 4
I was able to get to 920 on core. I did not try more than 1400 on memory. So I would say mine reached 920/1400 on stock. The reason I did not go any higher on memory is because determining instability on memory is a bit tricky. You will not get any artifacts as the GPU will try to correct those by re-rendering the image. I just stuck with 1400 because a 50Mhz more did not net me any performance increase and beyond that my frame rate actually dropped.
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Crucial SSD for OS Samsung Spinpoint F3 Asus XSPC water block, 360 radiator, and 720 reservo... 
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GPU cooling - XSPC Razer full GPU blocks Win 7 Home Premium Asus PB278Q 2560 X 1440p ISP Logitech G15 
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post #4 of 4
Thread Starter 
Quote:
Originally Posted by Awaz View Post
I was able to get to 920 on core. I did not try more than 1400 on memory. So I would say mine reached 920/1400 on stock. The reason I did not go any higher on memory is because determining instability on memory is a bit tricky. You will not get any artifacts as the GPU will try to correct those by re-rendering the image. I just stuck with 1400 because a 50Mhz more did not net me any performance increase and beyond that my frame rate actually dropped.
ah... thats good to know, I was able to hit 940Mhz on the core with a core voltage of 1.25v, however I was all th way up to 1540Mhz on memory without any artifacts, but I didn't realize the GPU would re-render the image in order to correct the artifacts.

I'm using MSI afterburner to OC as well as increase the GPU core voltage, but I'm using ATI tool to test for artifacts.

Is there another type of software that would be reliable in order to test for memory OC \\ artifacts?
My AMD/ATI build
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 (4..60Ghz) Gigabyte 990FXA-UD5 XFX R9-290 G.SKILL 8GB DDR3-1600Mhz 7-8-7-24 
Hard DriveOSMonitorPower
OCZ Vertex 2 Windows 7 Home 42 Inch Panasonic 1080p Plasma Antec Truepower 750W 
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My AMD/ATI build
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD FX-8350 (4..60Ghz) Gigabyte 990FXA-UD5 XFX R9-290 G.SKILL 8GB DDR3-1600Mhz 7-8-7-24 
Hard DriveOSMonitorPower
OCZ Vertex 2 Windows 7 Home 42 Inch Panasonic 1080p Plasma Antec Truepower 750W 
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