Hi guys i just want to tell u a way to overclock your graphics card.First of all you need to know that overclocking your graphics card does reduce the life of your graphics card however this all depends on the model you are using this is because some manufactuers overclock their cards allready,so further increase in the core clock would be obviously dangerous
however most cards are easily over clocked by at least 10%(20% maximum),
and a excellent utility(especially for nvidia based cards)is "n-tune"


This utility allows you to increase the core clock and memory clock speeds using a slider and then saving the settings as a "profile" which is then loaded every time windows starts up
also for nvidia cards the registry tweak "coolbits"is also a capable program,you can download the cool bits registry fix from

http://downloads.guru3d.com/download.php?det=815 change the registry keys yourself

follow this:
1.) Click on ‘Start’ and then click on ‘Run’.
2.) Type “regedit” (without the quotation marks) and click ‘OK’.
3.) Begin navigating to “HKEY_LOCAL_MACHINE/SOFTWARE/NVIDIA Corporation/Global/NVTweak“. To do so, expand the following directories in the same order: HKEY_LOCAL_MACHINE > SOFTWARE > NVIDIA Corporation > Global > NVTweak
4.) Under the column titled ‘Name’, right-click and select ‘New DWORD Value’.
5.) Replace the name ‘New Value #1′ with “Coolbits” (without the quotations).
6.) Right-click on Coolbits and select ‘Modify’. Under ‘Value Data:’, type:
1A - to unlock SLI AA options, advanced features, and overclocking abilities (or)
18 - to enable the SLI AA options and advanced features only
7.) Click ‘OK’ and exit the Registry Editor.


For A.T.I cards there are also utilitys for overclocking including the "a.t.i tool" http://www.techpowerup.com/atitool/ is a very good utility and very stable to use
NOTE: all these utilitys can be used with any brand of graphic card,although they are specifically written for each card they can be safely used with any card,infact a few years ago i used the ati tool to overclock a geforce 4ti also when considering overclocking your graphic card look at replacing the stock cooler for a more efficent gpu cooler,for example the Arctic Cooling Accelero Xtreme 8800 VGA Cooler http://www.overclockers.co.uk/ a excellent replacement gpu cooler and with 3x 80mm PWM Fans,5 Heatpipes and 107 Fins this is sure to keep your gpu cool even under overclocking scenariospersonally i have never been a overclocker,however i may later in the year when i water cool my system,which is also another very good way of keeping the graphic card(and your cpu) under overclocking proceduresany probs let me know.Good luck


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