Pros: Very fast. Samsung makes all components. Looks nice. Comes with mount, software, and free game.
Cons: A bit expensive considering it only nudges out the Vertex 3 by a little.
It's a revision of their 470 series. With the 830 you get a single 250MB DDR2-800 DRAM chip (K4T2G314QF-MCF7) for caching, compared to the two 125MB chips in the 470. The 830 also has a 6GB/s throughput for SATA.
Samsung's 2x-nm Toggle-mode DDR NAND is similar to that of Intel and Crucial (ONFi 2.x NAND) and the benchmarks back that up.
The memory controller is Samsung's 3-core ARM chip (S4LJ204X01-Y040).
With this series Samsung claims a MTBF of 1.5 million hours, and comes with a 3 year warranty. Nothing special there. What is special is their claimed usage of 0.078 watts in idle and 0.127 watts active, while most other SSDs use around 2 to 4 watts. I don't have the ability to verify this though.
Specific to the 128GB model, you get 320MB/s, while the 512/256GB models will give you 400MB/s. Writing speeds decrease with capacity, which is normal.
In AS SSD, my numbers were close to spec:
Same with ATTO:
One thing that I really liked was how the drive looked. Not that anyone would really see it, but Samsung took the time to give it a dark brushed metal exterior Even the packaging was nice. It won't be permanent, but mine came with a code for Batman Arkham City ($50 game) in addition to the most likely permanent additions such as Norton Ghost, Samsung's SSD Magician software (which you can use to update firmware) a 2.5" to 3.5" mounting bracket with screws, a molex to SATA power adapter, and a locking SATA cable.
From a cold boot it takes about 9-10 seconds to boot to my OS screen, and everything loads immediately, which I love, not that it's specific to this SSD. If it hadn't been for the game coupon, I may have gone with the Crucial M4, but with Samsung making every component, the low power usage, and Samsung's track record, I went with the Samsung 830 and don't regret it. The price seems a bit high though, if you aren't interested in the game. If the price drops to being even with the Vertex 3/Crucial M4 I can't see a reason to not go with the Samsung 830 drive. I took off half a flame for the price.