Need to know how I can make sure that my new gtx550 ti 2gb card is optimized in my CPU.  Every time I try and speed up the processor clock and memory clock to max my screen goes black.  Upgraded to this card from a gtx 9800.  Playing WOW and SWTOR and want the best graphics and game play Ican get without the video lag.

You should list all the specs for your system if you want the best advice.

I assume you're using Precision or Afterburner to OC your card?
You can't just slide the settings all the way to max. You have to start small and work your way up until its no longer stable. Search the forum to see what clock speeds others have been getting with that card and start from there. If its stable you raise the clock 10MHz and test again. I run Unigine Heaven for at least an hour to test my OC's.