Seem like a trend now, some of graphic card manufacturer ship their graphic card with factory overclocked card. We notice it from GeForce 260, GeForce 460, and now from NVIDIA 500 series. Before this we have blog about ENGTX570 that overclocked to 10MHz than stock performance.
Another card from ASUS is ENGTX580/2DI/1536MD5. The card was overclocked to 782MHz. The stock clock are 772MHz.
ASUS GeForce® GTX 580 graphics cards broke world performance records in conjunction with the ROG Rampage III Extreme motherboard. This configuration achieved the incredible 3DMark03 score of 217252 marks.