How can I overclock it ? What speed?
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How can I overclock it ? What speed?
;) You have to find what your particular card can do. There are a few types of 4200 which generally have clocks set to 250/444 or 250/500 by default (core/RAM). You should find you get around 300/500 or 300/550 o/c'ing depending on your stock clocks, that's faster than a real 4400 or 4800SE BTW.
:cool: To o/c simply raise the RAM speed 10mhz at a time and test to see when artifacts appear, then ideally drop it back 10-20mhz for a stable long term o/c. Leave the RAM o/c'ed and the repeat for the core, crashes and lockups are more common than artifacts there, just ensure you test thoroughly and don't leave things too near the ragged edge.
:D There are loads of tools which allow you to o/c, COOLBITS is the simplest which adds an otherwise hidden setting to your drivers panel (Display Properties -> Advanced).