SanDisk $50 Cache SSD
"SanDisk enters the caching solution market with the SanDisk ReadyCache 32GB SSD. This SSD provides instant acceleration to users' computers through intelligent software provided by Condusiv Technologies and hardware from SanDisk. By adding two tiers of data storage, both SSD and RAM, this solution looks promising."
"The SanDisk ReadyCache SSD marks the first large OEM making its way into the consumer SSD caching market. Caching holds such a promising future simply because it dramatically speeds up the user's computer without expensive and time consuming upgrades.
Typically moving to SSD storage drives expose users to large loss of storage capacity due to the higher cost of SSDs per gigabyte. Even with SSDs under a dollar per gigabyte, these can hardly compete with spinning disk drives which hover around pennies per gigabyte. By dynamically taking the most frequently accessed "hot" data and placing it on a small SSD, users can accelerate their large HDD, and in this case multiple HDDs, without the loss of any capacity. Not bothering with re-installation of the operating system is also a huge plus, making the process relatively pain-free."
Read the full review at [H]ard|OCP.
Only for Windows 7 and of course you'd have to run their management software. But based on the review it looks like it might help with gaming.