Originally Posted by lugal
It is ramcache and its basically just good marketing stunt. Btw some ramcache utilities will inflate read/write performance "of your ssd" (
) to few thousand mb/s.
it's not just benches. AS-SSD copy is still putting it ahead by ~200MB/s
--- I know about the GB/s transfer speeds, I've used Linux in "Live" mode before : DSL, Puppy Linux, Slax, etc.
If you use RAPID make sure you have a Uninterruptible power supply , data loss may occur if enabled and you lose power.
Edited by AlphaC - 12/10/13 at 7:07am
In addition to accelerating read performance, RAPID mode offers "write optimization." Caching writes in DRAM before moving them to the 840 EVO's flash-based TurboWrite cache helps maintain performance at high queue depths, according to Samsung. This approach evidently conveys other benefits, too, but Samsung isn't talking specifics. It's possible RAPID mode collates incoming data and writes it to the flash in larger blocks to make more efficient use of the NAND's limited endurance.
Of course, caching writes in volatile DRAM introduces the potential for data loss due to an unexpected power failure. RAPID mode transfers the contents of its write cache to the SSD every time the Windows write cache is flushed, so it doesn't hang on to the data for too long. There's still some risk attached, which is probably why RAPID mode is disabled by default.
Between reboots, Samsung's software automatically copies the contents of the RAPID cache to main storage. This seamless step preserves the contents of the cache, but it'll cost you a gig of SSD capacity.