The OCZ Synapse Cache works with the Dataplex-software to make use of the caching-functionality. The smart-software should categorize the files and software that not commonly used to the slowest driver and that will your current HDD. The SSD’s work in conjunction with your current HDD’s the same features were used with the Intel Z68 chipset.
 
The official press release “OCZ Synapse”:

New Synapse Cache 2.5” SATA 6 GB/s SSDs Leverage Dataplex™ Software to Deliver Superior Performance and Increase System Responsiveness
SAN JOSE, CA—Sept 20, 2011—OCZ Technology Group, Inc. (Nasdaq:OCZ), a leading provider of high-performance solid-state drives (SSDs) for computing devices and systems, today launched its Synapse Cache Series 2.5” SSDs. The new Synapse SSDs are optimized for caching applications and leverages Dataplex™ cache software to dynamically manage the Synapse SSD in conjunction with standard hard disk drives (HDDs), to provide users with SSD-level performance across the entire capacity of the HDD.
 
“The industry has shown that it craves the performance advantages that SSDs provide, however, many users still value the high capacities associated with HDDs,” said Tobias Brinkmann, Director of Product Management, OCZ Technology Group. “We see the Synapse Cache SSDs integrated with Dataplex™ software as a big win for a large number of customers who value SSD performance but still require HDD capacity. We are proud to be the first to offer this no-compromise approach to enabling high-performance and high-capacity storage for virtually any PC platform.”
 
This comprehensive caching solution prioritizes the most frequently/recently used “hot” data on the Synapse Cache SSD, while “cold,” less frequently used data is stored on the larger capacity HDD. The OCZ Synapse series features the latest and most advanced hardware and software technology to deliver superior storage performance without sacrificing HDD capacity.
 
OCZ Synapse Cache SSDs are available now in 2.5” SATA III 64GB and 128GB configurations throughout the company’s global channel.

And the product info page description of the product:

SATA III Solid State Drive / Caching Solutions / 80,000 IOPS / 64GB-128GB
 
The OCZ Synapse Series is optimized for caching applications to dynamically manage the Synapse SSD in conjunction with standard hard disk drives (HDDs), to provide users with SSD-level performance across the entire capacity of the HDD. The OCZ Synapse Series leverages the latest and most advanced hardware and software technology to deliver superior storage performance without sacrificing HDD capacity. For users craving the performance advantages of SSDs combined with the high capacities associated with HDDs, OCZ offers the first no-compromise approach to enabling high-performance and high-capacity storage for virtually any PC platform.
 
The OCZ Synapse Series integrates Dataplex™ caching software to dynamically manage the use of both SSD and HDD for superior overall storage performance. This combination creates an environment where the most frequently used “hot” data stays on the ultra-fast SSD, while the “cold” data remains on the larger capacity HDD (sold separately). Advanced caching algorithms learn user behavior and adapt storage policies to ensure optimal performance for each individual user, maximizing productivity for the most demanded programs and applications:

 
Synapse Series integrates seamlessly within any modern PC platform, ensuring optimal compatibility along with performance gains and comes backed by a 3-year warranty.