Published: Thu 27th Aug, 2009 | Author: Parm Mann
Products: Agility EX 64GB
Companies: OCZ (All OCZ content)
Almost a month has passed since OCZ last introduced another range of solid state drives (SSDs), so we're due something new.
Fortunately, the Californian manufacturer's relentless barrage of Flash-based storage solutions continues today in the form of the all-new Agility EX series.

The drive, pictured above, is one of only two OCZ series that utilise SLC (single-level cell) NAND Flash technology, as opposed to the MLC (multi-level cell) architecture found in most other drives. SLC Flash promises "both performance and lifespan advantages", says OCZ, and the Agility EX series hopes to offer those benefits at a "truly affordable" price point.
At launch, the Agility EX will be available as a 64GB model and it'll ship with an MSRP of $399 (roughly £250). Just over $6 per gigabyte isn't exactly what we'd call affordable, but OCZ's pricing is certainly competitive as far as high-performance SLC-based drives are concerned.
Speaking of performance, we're told that the 64GB Agility EX will hit read and write speeds of up to 255MB/s and 195MB/s, respectively. That's quick, on paper at least, and the drive sports Indilinx's popular controller and 64MB of onboard cache.
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I've never really understood the point of SLC over MLC - if you want the speed gains then it's cheaper to put two MLCs in RAID0 and reliability isn't really an issue.
SLC drives are also capable of many more erase cycles than MLC. Typicaly 100k cycles vs 10k cycles.
This is not normally an issue if you are replacing a hard drive for normal desktop OS use because most of the data (OS install files etc) are very rarely changed, so because of the wear leveling, the wear caused by continuously updating a few files gets spread around the whole volume.
This is an issue though if the whole drive is being used for data that going to be continuously updated such as a high performance database server that runs 24/7, or perhaps a big swap volume for some sort of supercomputer.Quote
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