Simviation Forum

Apr 4^th, 2009 at 10:39pm

macca22au Offline
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Now that I have had my first success overclocking the i7 940 I'm feeling a little cocky.

Is it possible to tweak the GTX 280 to add to its performance?

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Reply #1 - Apr 5^th, 2009 at 3:11am

Wingo Offline
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It is quite possible. You need two programs, RivaTuner and Furmark. RivaTuner does the OCing and Furmark stresses your card to test the OC. The method is to open RivaTuner, go into the customize button of the driver settings and select System Settings. Open the fan tab and change to direct control. Set the fan to 85%. Move back to the overclocking tab Tick the "Link clocks" button and start SLOWLY moving the top two bars (Core Clock and Shader Clock) to the right (they will move together). Raise about 5mhz at a time and test with Furmark for each one. When it becomes unstable knock it back to the stable setting. Next move the Memory Clock to the right at about 10mhz at a time until it becomes unstable and move back to a stable setting. When you have found what works, set your settings and tick the "Apply overclocking at Windows start" and set the fan back to auto control. The point behind setting the fan at 85% is if it is stable with the fan locked at 85 it will be stable during games when the fan goes up to 100% and it will give you a little breathing room in the temperatures.

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Reply #2 - Apr 5^th, 2009 at 8:43pm

dvpro Offline
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How would this method fair up on the 285 Super Clocked edition?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130446

I messed with the standard EVGA Precision tuner program that comes with the card and I found that even if I tweeked the sliders up a little bit the system became unstable. So I have just left it as is out of the box with the latest drivers. I would however like to get more out of the card if possible. I also noted when I did raise the sliders there was no noticeable difference...that I could see at least. What do ya think?

Wingo wrote on Apr 5^th, 2009 at 3:11am:

It is quite possible. You need two programs, RivaTuner and Furmark. RivaTuner does the OCing and Furmark stresses your card to test the OC. The method is to open RivaTuner, go into the customize button of the driver settings and select System Settings. Open the fan tab and change to direct control. Set the fan to 85%. Move back to the overclocking tab Tick the "Link clocks" button and start SLOWLY moving the top two bars (Core Clock and Shader Clock) to the right (they will move together). Raise about 5mhz at a time and test with Furmark for each one. When it becomes unstable knock it back to the stable setting. Next move the Memory Clock to the right at about 10mhz at a time until it becomes unstable and move back to a stable setting. When you have found what works, set your settings and tick the "Apply overclocking at Windows start" and set the fan back to auto control. The point behind setting the fan at 85% is if it is stable with the fan locked at 85 it will be stable during games when the fan goes up to 100% and it will give you a little breathing room in the temperatures.

Asus P6t Deluxe&&Core i7 940&&6GB Corsair Dominator DDR3 @ 1600MHz&&EVGA GTX 285 SC Edition &&PC Power & Cooling 750&&2) Samsung 22" monitors&&Antec 1200&&Thermalright 120&&Dominator memory fan kit&&Vista Ultimate 64&&Partridge&&Peartree

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Reply #3 - Apr 5^th, 2009 at 9:07pm

jwenham Offline
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dvpro wrote on Apr 5^th, 2009 at 8:43pm:

How would this method fair up on the 285 Super Clocked edition?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130446

I messed with the standard EVGA Precision tuner program that comes with the card and I found that even if I tweeked the sliders up a little bit the system became unstable. So I have just left it as is out of the box with the latest drivers. I would however like to get more out of the card if possible. I also noted when I did raise the sliders there was no noticeable difference...that I could see at least. What do ya think?

Wingo wrote on Apr 5^th, 2009 at 3:11am:

It is quite possible. You need two programs, RivaTuner and Furmark. RivaTuner does the OCing and Furmark stresses your card to test the OC. The method is to open RivaTuner, go into the customize button of the driver settings and select System Settings. Open the fan tab and change to direct control. Set the fan to 85%. Move back to the overclocking tab Tick the "Link clocks" button and start SLOWLY moving the top two bars (Core Clock and Shader Clock) to the right (they will move together). Raise about 5mhz at a time and test with Furmark for each one. When it becomes unstable knock it back to the stable setting. Next move the Memory Clock to the right at about 10mhz at a time until it becomes unstable and move back to a stable setting. When you have found what works, set your settings and tick the "Apply overclocking at Windows start" and set the fan back to auto control. The point behind setting the fan at 85% is if it is stable with the fan locked at 85 it will be stable during games when the fan goes up to 100% and it will give you a little breathing room in the temperatures.

Well... That card is already OC at the factory! Any extra you get out of it will be luck of the draw.

Intel i7 940 2.93 clocked to 4.0ghz Asus P6T Deluxe 6gb OCZ 1600 8-8-8-24 EVGA GTX 260 Superclocked Edition Thermalright 120 CPU Cooler Power PC & Cooling 750w PSU 1 tb Seagate Barracuda HD 500 gb Seagate Barracude HD 22" Viewsonic Widescreen Track IR 4 XP Pro x64 www.fairtax.org

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Reply #4 - Apr 6^th, 2009 at 1:55am

macca22au Offline
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thanks Wingo: I can't try it until the weekend. I will report back then.

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Reply #5 - Apr 6^th, 2009 at 3:26am

Wingo Offline
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Your marmalade is no match
for my VEGEMITE!!
YSBK. Back where I belong.

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Posts: 1322

dvpro wrote on Apr 5^th, 2009 at 8:43pm:

How would this method fair up on the 285 Super Clocked edition?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130446

I messed with the standard EVGA Precision tuner program that comes with the card and I found that even if I tweeked the sliders up a little bit the system became unstable. So I have just left it as is out of the box with the latest drivers. I would however like to get more out of the card if possible. I also noted when I did raise the sliders there was no noticeable difference...that I could see at least. What do ya think?

Wingo wrote on Apr 5^th, 2009 at 3:11am:

It is quite possible. You need two programs, RivaTuner and Furmark. RivaTuner does the OCing and Furmark stresses your card to test the OC. The method is to open RivaTuner, go into the customize button of the driver settings and select System Settings. Open the fan tab and change to direct control. Set the fan to 85%. Move back to the overclocking tab Tick the "Link clocks" button and start SLOWLY moving the top two bars (Core Clock and Shader Clock) to the right (they will move together). Raise about 5mhz at a time and test with Furmark for each one. When it becomes unstable knock it back to the stable setting. Next move the Memory Clock to the right at about 10mhz at a time until it becomes unstable and move back to a stable setting. When you have found what works, set your settings and tick the "Apply overclocking at Windows start" and set the fan back to auto control. The point behind setting the fan at 85% is if it is stable with the fan locked at 85 it will be stable during games when the fan goes up to 100% and it will give you a little breathing room in the temperatures.

Due to your car already being OC'ed it is unlikely you will get anything out of it. I have an OC GTX280 and squeezed an extra 15mhz out of it, but as J said it is all luck. My GTX280 actually runs around the same speeds as a lot of the OC'ed GTX285s so I think I'm quite lucky.

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