The RealSSD C300 is also backwards-compatible with the SATA 3Gb/s interface that most consumers are using today, where it supports maximum read and write speeds of 265MB/s and 215MB/s, respectively. The drives use high-speed synchronous MLC NAND flash memory, and will come in 1.8" and 2.5" form factors -- both of which will be available in 128GB and 256GB capacities.
Crucial is quoting a 1,000,000 hour MTBF rate for the drives and is backing them with a 3-year warranty. The only sticking point is the price, unsurprisingly. At either $799 for the 256GB version or $499 for 128GB, these aren't exactly a cheap upgrade, but if it's raw performance you are after then the Crucial RealSSD C300 will certainly deliver.