Pros: It's a SSD. Reads and writes are off the charts but I never noticed a significant boot time difference between this and my 10000 RPM raptor.
Cons: Like previous owners stated, my mobo will simply choose not to see it on boot-ups. Not only that but coming out of Sleeps can be touchy. I've had multiple BSODs because this thing doesn't want to play nice when waking up. Lastly, you'll fill it up faster than you think. Its been over a year and a half since I bought it and despite my best efforts to only use it for Windows (I keep all my other programs on a TB HDD) it's filled up to the point that I can't use it anymo...
Summary: Even with the horrendous reboot issue, I'm still probably going to keep it. It is installed in a laptop so I can't always use "sleep", but as long as I use "sleep" as much as possible instead of a full power-down, the problem doesn't bother me too much. I've contacted support, but based on what I'm seeing on the message boards, this is a design flaw rather than a bad unit. ADATA should be ashamed of themselves for putting out this product. Or maybe sandforce.
Pros: Very fast when it works. Around 200 read and 200 write based on ATTO large files. Upgraded from a 5400rpm laptop drive and the difference is night and day- browser opens instantly, and even microsoft word is instant (that used to take at least 5-8 seconds!)
Cons: Disappears from bios EVERY reboot. Sometimes it takes 3 reboots to get it recognized, and sometimes it takes 10. My record is 24 reboots until my computer could actually boot. I've updated the firmware to the most recent version and it has not helped one bit.
Cons: I bought this SSD in March. Lately from time to time Windows reboots and when the system restarts it cannot detect the drive. I need to try a few times until it finally works. I will be contacting tech support now so hopefully I can get a new one.
Summary: I bought this SSD drive because of [...] reviews. However, this SSD drive released a firmware update on 1/4/2011 that very few consumers can install. ADATA omitted a number of key settings that are required before an update can be done. After following those changes, the firmware update failed repeatedly. My cumputer would often freeze-up. After making repeated calls to ADATA about this problem, they wanted me to ship the drive to them.
Summary: I purchased my ADATA S599 drive in late October and had it running in my Windows 7 x64 system until yesterday. While it was operational I noticed faster transfer speeds and better Windows Experience Index for my system. I was happy with the drive's performance. Problems began when I tried to upgrade the drive to a newer firmware just released. The drive just wouldn't upgrade.