NVIDIA got it right once again. There is a perfect balance of price, performance-level, and power-draw, it all fell in the right place. The GTX 570 is giving you performance level on-par with the GeForce GTX 480, but at a very reasonable price, and at surprisingly good power draw, heat, and noise levels. In essence NVIDIA conquered the need to wait for and move to a new manufacturing process by simply working hard on whatever technology is available. In most of the latest DirectX 10 and DirectX 11 games, the GTX 570 will provide you comfortable gameplay with quite some eye-candy enabled, at 1920 x 1200 resolutions. It will also make gaming at 2560 x 1600 possible with some loss of detail.
Palit's card is a decent non-reference implementation of the GF100 board. A lot of care was taken to ensure electrical stability, with plenty of voltage phases. The overclocking capability is good, but is limited whenever voltage-based tuning is needed. The cooler, which looks very Quadro-ish, provides fairly good cooling, it's not much noisier than the reference design blower, despite its double-fan design. In all, Palit's GTX 570 Sonic is worth considering if you're planning to buy a GTX 570.