I have a Dell XPS One 2710 Touch which comes with Ivy Bridge 3rd Gen. Intel Core i7-3770S processor, maxed out 16GB RAM (2x 8GB), 1 SATA HDD 2GB Seagate (1TB/platter) and an empty mSATA III SSD slot. Just a day ago, I've added a 240GB mSATA III SSD (Edge Memory - Sandforce SF-2281) and configured Intel SRT/RST to 'Accelerate - Maximized' all allowable 64GB leaving the balance of 170GB partitioned separate from the cache partition. This balance 170GB can be used as a normal drive if I format it. Question is, can I configure 32GB from this space for ReadyBoost to run concurrently with a cached partition on the same mSATA SSD drive? if so, any real benefits having both+ ReadyBoost?
There is no point in having both. The SSD cache is to speed up reads when you have a mechanical hard disk, and is could be considered a "poor man's" SSD. If you have an SSD in place of a hard disk you get zero benefit from the SSD cache, it might even hurt performance having an SSD cache with an SSD disk.