My specs: GA-EX58-UD4P, i7-920, Radeon HD4850X2, 1GB x 3 Kingston HyperX, Windows 7 64bit Ultimate, Adata 64GB SSD (upgraded from S596 to S599)
I decided to upgrade my Adata S596 to an S599(w/Sandforce cntr), and use my S596(w/Jmicron cntr) in another machine. So I did a disk image with Acronis True Image 2010. And restored that image to the new S599. To my surprise it took about a minute longer to boot-up, and after I was booted the S599 drive was noticably slower. There is a fair amount of "lag" when I launch an application that was not there with my S596. So I wiped both drives right down to unallocated space. Re-initialized & formatted both drives using Acronis Disk Director 2011. Then restored the same image to both drives. Same story. The S599 with the Sandforce controller was slower to boot by about a minute. And I had a fair amount of lag when launching applications. But the S596 was just as fast as it has always been. It boots fast and executes my large apps fast.
Now, this is where it gets weird. When I benchmark the drives using Passmark 7 64bit version, the S599 is about 42% faster than the S596 which is what you'd expect.
So why does my new drive (the S599) take so much longer to boot-up, and have so much lag when executing applications, yet it finishes 42% faster than the S596 in the Benchmark?
I've played with the write cache settings, and nothing seems to change substantially.
UPDATE 19 Nov 2010: HD Tune Pro 4.6 reports 416 damaged sectors on the S599. I am also experiencing inconsistent behavior along with minor data errors. So the drive has been returned for replacement. You should probably ignore all of my comments about the Adata 64GB S599 as these were based on what appears to be a defective drive.
UPDATE 30 Nov 2010: Just received my replacement S599. Same results as listed by me in this thread previously. Draw your own conclusions.