My 64MB GeForce2 MX 200 set the clock frequency to 220Mhz(Max), default at 175Mhz. Memory clock at 180Mhz, default at 143Mhz....Is it harm to the graphics card? I have adding a 4cm*4cm fan on the haetsink.

*Note:my Geforce2mx card doesn't come with a fan...