Intel Core i5 2557M is a very popular processor for ultrabooks. While its frequency is mere 1.7GHz, it can turbo boost to 2.7GHz which speeds up the performance in a big way. Thanks to hyperthreading, the CPU is able to handle upto 4 threads simultaneously with its 2 cores. Graphics are handled by Intel HD Graphics 3000 that is clocked between 350 and 1200MHz (under turbo boost mode).
Here are its benchmark results (test unit was Toshiba Z830 10E, which has now been superseded by Toshiba Z930):
1) PCMark Vantage – 9231
23 Jul 12
2) 3DMark 06 – 2762
3) 3DMark Vantage – 7260
4) Cinebench R10: Rendering Single CPUs 64Bit – 4204
5) Passmark – 2660