SSD Confusion

Hi, I'm fairly competant when it comes to computers and understand most things but whilst looking at the SSD for a few laptops I was looking into purchasing I am confused what all this extra information means. The sections in bold are the parts I'm confused about. Also before people start flaming me I looked through the OP on 'The New SSD thread' and didn't find the answers i'm looking for, thanks in advance for any help you lot can offer.

160GB Intel SATA2 Solid State Disk Drive
60GB OCZ Vertex Solid State Disk Drive
128GB Corsair Solid State Disk Drive

 

*Intel is the manufacturer of the SSD drive. SATA 2 is the capable speeds at which the drive can hit or max out at.

*OCZ is the manufacturer; Vertex is the brand/ model name.

*Corsair is the manufacturer;

 

Thank You. One more question is SATA 2 a high speed for the drive to hit?

 

SATA2 or more correctly, SATA/300, is the max bandwidth that a drive connected to it can have. What this means is that 300MB/s is the max any drive can reach (in theory), but in real life, there is overhead and losses, which reduce this to around 250-270MB/s. No HDD can effectively utilize this speed but a lot of SSDs can reach into this and even nearly max it out. One thing to note is that speeds listed for those drives don't necessarily correlate to speed since those are sequential speeds and more often than not, are hardly ever reached. Read reviews to find out the useful info such as random R/W (or 4K small R/W), access time, power consumption, etc.

 

The intel and vertex are very solid drives. The corsair may or may not be depending on the exact model (some corsairs have samsung controller which is good, other corsair models have jmicron controllers which are crap).