Thats actully quite a rare Card, Dont see or hear much of them, If im not mistaken it was actully built by MSI For a geman Company "Medion",. But yeah just overclock the same as any other.
Get ATI Tool http://www.techpowerup.com/atitool/ and up the core and mem gradully and run 3dmark03 a couple of times to make sure its stable
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