NVIDIA has managed to optimize its Fermi architecture well and with the GF110 circuit it opened up another 32 CUDA cores without overclocking potential taking any real harm. ASUS' tailored GeForce GTX 580 DirectCU II has now been pushed to mighty 1519 MHz on the GPU.
ಠ_ಠ That is a godlike overclock from the 782/1564/1250 that this card already comes with and 772/1544/1000 vanilla 580 clocks. Good thing it has the cooling capabilites to deal with the amount of heat.