4 KB Random Write
The performance hit finally becomes apparent when we start ripping off 4 KB random writes. Samsung's 120 GB 840 EVO trails the rest of the crew, but then again it's only expected to hit 35,000 IOPS with a boost from Turbo Write. The 250 GB model plateaus with four outstanding commands. It does hit Samsung's specified target though, settling around 66,000 IOPS. Neither the 500 GB nor the 1 TB versions quite make it to 90,000 IOPS, though the largest configuration nearly gets there at a queue depth of eight.

Without question, random write performance is extremely important. Early SSDs didn't do well in this discipline, seizing up even in lightweight workloads. Newer drives proffer more than 100x the performance of solid-state storage from 2007. However, we also see a point of diminishing returns on the desktop.

It'd be easy to single out the 120 GB 840 EVO as the family's misfit. Just remember that it's only slow by comparison. In absolute terms, it still blows away the responsiveness of a mechanical disk.
- The Evolution Of Samsung As An SSD Giant
- The 840 EVO's Bag Of New Tricks
- Inside Samsung's 840 EVO
- Test Setup And Benchmarks
- Results: 128 KB Sequential Reads
- Results: 128 KB Sequential Writes
- Results: 4 KB Random Reads
- Results: 4 KB Random Writes
- Results: Tom's Hardware Storage Bench v1.0
- Results: Tom's Hardware Storage Bench, Continued
- Results: PCMark 7 And PCMark Vantage
- Results: Robocopy File Copy Performance
- Results: Power Consumption
- A Look At Samsung Magician's RAPID Feature
- Samsung's 840 Was Good; The 840 EVO Is Better

While the 1TB drive coming down to ~65c/GB is nice, seeing the 120 GB drives get near there would be nice. Especially since this is meant to be the value king.
I got them on a sale on Newegg for around $500 for both of them.
A 1TB would be cool if I find it on sale....
or maybe I should try out writing a letter to someone fat in some weird red costume...
Samsung: I need this drive with 2 SATA connectors so it makes possible to create a virtual RAID, and squeeze the drive performance.
Is clear that newer drivers are bottlenecked by the fastest SATA, so out of PCIE drives, virtual RAIDS are necessary.
Regards,
C. Ryan