![]() ![]() RivaTuner will ask you to reboot in order to detect the graphics card clocks. Start RivaTuner and display frequencies and temperature monitoring: ![]() Press I key to hide text on the 3D window (that will speed up a tad the rendering). Start FurMark in stability test mode, in a 512×512 window with no AA, and check Xtreme Burning Mode: ![]() At this point, drop the clocks until you don’t see artifacts anymore. I bet you will see artifacts on FurMark because all values to the max will produce more heat. 4/ Once you have found the max clocks, set them all to their max values.At this moment drop speed by 5MHz until you don’t see artifacts anymore. Repeat this step until you see artifacts or notice a FurMark freeze. 3/ do overclocking: increase one clock (GPU, shader or memory) by 5 or 10MHz while keeping the two others to their default values.Now we can begin the graphics card overclocking. You can use RivaTuner for that, but GPU-Z gives you these values faster:Īnd before starting the overclocking, let’s have a look at the FurMark’s score (1280×1024, fullscreen, no AA, 60 sec): Before starting the overclocking, we have to know the graphics card default clocks. FurMark: will allow you to burn the graphics card to check stability.Ī GeForce has three different clocks we’re going to change: GPU clock, Shader clock and Memory clock.RivaTuner: RivaTuner will allow you to changes graphics card clocks.To find these max clocks, you need two utilities: By stable I mean no freeze nor artefacts. Basically, overclocking a graphics card is an easy operation: find the max graphics card’s clocks that keep the video card stable. Okay, now that the hardware side is in place, let’s see the software one. This cooler is really efficient and is very quiet! So first thing I did was to replace this cooler with a better one: the Scythe’s Musashi: This GeForce, from Twintech, was equiped with a really noisy cooler (and not efficient): Why I need to overclock my graphics card? Overclocking your graphics card will allow you to get the most out of your card for free! You can expect a gain up to 10%! Today, a small hardware tutorial: how to overclock a GeForce GTS 250 (1Gb GDDR3). CAUTION: Overclocking can damage your graphics card (not covered by your warranty) so use the information of this post at your own risk. ![]()
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