Intel 313 Series Hawley Creek SSDMAEXC020G301 mSATA 20GB SATA II SLC Internal Solid State Drive (SSD)

Pros: This is a single layer drive! And it's under 100 bucks! It won't suffer the dismally short lifetime of the Multi-layer solid state drives, it has much faster read times than all but the top notch MLC drives out right now.

This would be a perfect second drive to run a couple applications or modern games from. Since it would last for many many years, you'd be able to carry it over with upgraded machines for the foreseeable future.

Cons: It has lower data density and slightly lower write times but this is the trade-off of Single Layer design.
The longevity and higher read speeds than most MLCs more than make up for these shortcomings in many users applications.

Other Thoughts: This drive is suited to a different market than the MLC drives. If you're looking for the speed of a SDD, with the longevity of a mechanical drive, the SLC type drives are for you. If you are after ultra-high write speed and higher capacity and don't mind skimping on the read speed a little, and don't mind a shorter life drive, go for MLC. Please don't down-rate this drive without researching a little on the technology. Google "MLC vs SLC" to do some more in-depth reading on the subject.

Pros: Fits mother board mSATA slots.

Cons: Very slow reads and writes. Expensive on a per Gb basis.

Other Thoughts: If you plan to use this as a cache on your motherboard save your money and just buy a good SSD. This is a slow card and you won't gain much.