To overclock this card, I used the Catalyst Control Center. I was able to push this card from the stock core clock of 670MHz to 715MHz. The memory was overclocked from the stock 830MHz to 945MHz. Not a bad overclock at all if you ask me. This was especially surprising considering that this card has no fan on it. Also, the card was idling at 21C while overclocked! That's just amazing!