As on yesterday i posted a thread regarding post your GPU-Z Screen shot and alot of members PM'd me asking how to OC a VGA so i'm going to explain it all 
So here we go
Isselama me Files deka Download karaganna-
EVGA Precision Setup-
http://www.mediafire.com/?be4duz2hel9dfl1
ATITool 0.26 -
http://www.mediafire.com/?vqa5htrlqec9tb5
So For those of you who don't know, artifacts occur when your GPU is overclocked too high and/or your temperatures are too high (but not high enough for a shut down). If you get artifacting right out of the box with good temperatures and you did the proper method of installing new (and different) NVIDIA WHQL drivers, I suggest you RMA your GPU. Make sure your temperatures stay below 105 degrees Celsius, that is the max most cards can handle. It is best to stay below 90 degrees Celsius, artifacts can occur before 105.
For this guide I'll be using my primary video card for example, an EVGA GTX 260 CORE 216 (55nm). This is the vanilla (default) version which came at the factory clocks.
Now onto the overclocking. I open up EVGA Precision, and ATItool 0.26. So lets say My core clock is 576 mhz, shader clock is 1242 mhz, memory clock is 999 mhz just as it should be. Core/shaders are linked and fan speed is auto, or 40%. Notice with EVGA Precision 1.6.1 you can select other video cards to overclock separately. The monitoring graph can be removed from the box and expanded to show additional information. Very useful. Do not enable Apply at startup until you've ensured stability! !!!
So this should help you ppl out if you need extra help ask any on the Thread please don't Pm me

So here we go
Isselama me Files deka Download karaganna-
EVGA Precision Setup-
http://www.mediafire.com/?be4duz2hel9dfl1
ATITool 0.26 -
http://www.mediafire.com/?vqa5htrlqec9tb5
So For those of you who don't know, artifacts occur when your GPU is overclocked too high and/or your temperatures are too high (but not high enough for a shut down). If you get artifacting right out of the box with good temperatures and you did the proper method of installing new (and different) NVIDIA WHQL drivers, I suggest you RMA your GPU. Make sure your temperatures stay below 105 degrees Celsius, that is the max most cards can handle. It is best to stay below 90 degrees Celsius, artifacts can occur before 105.
For this guide I'll be using my primary video card for example, an EVGA GTX 260 CORE 216 (55nm). This is the vanilla (default) version which came at the factory clocks.
Now onto the overclocking. I open up EVGA Precision, and ATItool 0.26. So lets say My core clock is 576 mhz, shader clock is 1242 mhz, memory clock is 999 mhz just as it should be. Core/shaders are linked and fan speed is auto, or 40%. Notice with EVGA Precision 1.6.1 you can select other video cards to overclock separately. The monitoring graph can be removed from the box and expanded to show additional information. Very useful. Do not enable Apply at startup until you've ensured stability! !!!

So this should help you ppl out if you need extra help ask any on the Thread please don't Pm me
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But downloading 3DMark Vantage a 500MB file and MSI after burn doesn't support Voltage option to all cards only the latest Cards, and most of us have Old one so this is the best way 