When push came to shove, the ENGT430 was able overclock and saw an increase of 166MHz or close to 24% in core clock speed while the memory fared a bit worse at 900Mhz or around 12.5%. These increases were stable and allowed the gaming performance of this card to be increased across the board and this allowed it to be extremely competitive with the HD 55XX series from ATI.



Link: Overclockersclub