Feeds

Crucial releases really skewed cheap flash drive

64GB RealSSD

Protecting against web application threats using SSL

Lexar has announced a 64GB version of its Crucial RealSSD flash drive with enormously skewed read and write rates.

The 2.5-inch format product is a dwarf compared to its 128GB and 256GB counterparts, and a comparative sluggard at writing.

The 64GB version uses the same multi-level cell flash from Micron as the other two but there is obviously much less of it, so the scope for parallelism is reduced. It has the same fantastic 355MB/sec sequential read rate and a 50,000 random read IOPS rating, with 4K blocks, equal to the 128GB unit, but its sequential write rate is a derisory 70MB/sec, and its random write IOPS rating is 15,000. The 128GB product's is 30,000 and the 256GB product's is 45,000.

The sequential write bandwidth for the 128GB and 256GB products are 140MB/sec and 215MB/sec respectively. According to Micron SSD spokesman Ben Thiel, quoted in a Micron blog, the reason for the skewed read and write performance on the 64GB product is "parallelism".

Thiel went on to say: "As we add more NAND die to the C300 platform, the drive can perform more parallel transactions, which increases write performance.

"The other capacity-specific difference is the amount of over-provisioning that is available. Over-provisioning essentially refers to 'spare area' that is reserved for background operations that are fundamental to the drive’s performance. NAND natively has around 6 percent over-provisioning built in, so as SSD capacity goes up so does the corresponding percentage of over-provisioning. This increase in 'spare area' results in greater performance in the larger capacity drives."

The 64GB product is comparatively cheap at $149.99 (about £121.00), and is intended as a boot drive and application loader, not a general read/write device, for consumer notebooks. It also has a 6Gbit/s SATA interface, and the sequential read rate drops to 265MB/sec with SATA II and its 3Gbit/s, which is what the majority of notebooks use. Still, that's not exactly slow compared to a hard disk drive. ®

Choosing a cloud hosting partner with confidence

More from The Register

next story
Wanna keep your data for 1,000 YEARS? No? Hard luck, HDS wants you to anyway
Combine Blu-ray and M-DISC and you get this monster
US boffins demo 'twisted radio' mux
OAM takes wireless signals to 32 Gbps
Google+ GOING, GOING ... ? Newbie Gmailers no longer forced into mandatory ID slurp
Mountain View distances itself from lame 'network thingy'
Apple flops out 2FA for iCloud in bid to stop future nude selfie leaks
Millions of 4chan users howl with laughter as Cupertino slams stable door
Students playing with impressive racks? Yes, it's cluster comp time
The most comprehensive coverage the world has ever seen. Ever
Run little spreadsheet, run! IBM's Watson is coming to gobble you up
Big Blue's big super's big appetite for big data in big clouds for big analytics
Seagate's triple-headed Cerberus could SAVE the DISK WORLD
... and possibly bring us even more HAMR time. Yay!
prev story

Whitepapers

Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.
WIN a very cool portable ZX Spectrum
Win a one-off portable Spectrum built by legendary hardware hacker Ben Heck
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
The next step in data security
With recent increased privacy concerns and computers becoming more powerful, the chance of hackers being able to crack smaller-sized RSA keys increases.