g.m.waters (red ranger3) wrote:
should be no difference at all, the drive cant use all of the bandwidth that is available on sata2 let alone on sata3.
Maybe mechanical HDDs and older SSDs can't use all the bandwidth of SATA2, but even Indilinx Barefoot-based SSDs are bottlenecked by SATA2 on sequential transfers. Sandforce-based and Crucial SSDs are restricted even further.
Highly parallel SSDs like some FusionIO products or those with onboard RAID-0 like OCZ Revodrives require more bandwidth than even SATA3 can provide, so they're forced to use PCIe or HSDL.
After a quarter century of relative obscurity, SSD technology has exploded in the last five years or so (perhaps the watershed SSD was the first Memoright to surpass HDDs in performance) to the point that most motherboard makers were caught by surprise. They looked upon PCIe as "videocard slots" and you were lucky to get even two.
I ran into my first SSD bottleneck over two years ago when I found my array of four Vertex1 SSDs limited to 650MB/s by the ICH9R southbridge on my Maximus Formula. As a result, last year I sacrificed one of my videocards to free up a PCIe slot for my RevoX2 and this year I chose a Big Bang Marshal with its 8 16xPCIe slots for my new Sandybridge build.
Indeed the OP should see no difference but not because it can't use the bandwidth. It's because it's already bottlenecked by its own SATA2 internally.