AMD's Radeon RAMDisk software, launched along with its desktop A-Series "Trinity" APUs, is being pitched to consumers as a trial software. A combination of A-Series "Trinity" APUs and AMD-certified memory lets you use the software to create a RAMDisk which works in conjuction with the primary HDD/SSD much in the same way as Intel Smart Response tech or NVELO Dataplex, it's just that the cache SSD is replaced by the system memory, an infinitely faster and more durable caching medium. The software juggles data from the primary drive to the RAMDisk based on its heat (frequency of access). Used with DDR3-1600 MHz memory, users could see data access speeds of up to 25.6 GB/s (gigabytes per second), a 1,700-times speedup over conventional HDD. When off the trial, a license to use the software can be bought for $19.
Source: Techpowerup

I have downloaded the trial. Its limited to 4gig because I have Corsair not the rebranded OCZ. Ram usage is currently 86% while cores are stable 1-3%. I'm going to stick with the trial and use it for a week before I commit 20 bucks.