If that ssd is for performance, you will be very disappointed. MLC units are notorious for long write delays. The cheapest unit that is any good is the intel x25-m at $600+. anandtech had a good article on this.
MLC is a completely different kind of flash memory. I wouldn't buy any MLC based drive right now except the Intel X25-M - most of them tend to have problems, especially with the random writes. If you want fast, but can't afford the $400+ for a good SLC SSD (or the Intel drive), I'd go with a 150GB Velociraptor.
well it's been a long time but ,here goes,sequential read/write,is exactly what it says that the data is written sequentially as in 12345 etc,that is relative to it's offset on the hdd,,[just another way of saying it's address], random read write as in testing a hdd's access speed is usually derived from a "seed" # and the data is written randomly,these functions are used usually to calculate a hdd's access speeds and,may or may not include the hdd's head's latency. .