Feeds
85%
Samsung SSD 840 series

Samsung SSD 840 series storage review

MLC for business and TLC for pleasure

  • alert
  • submit to reddit

Next gen security for virtualised datacentres

When Samsung launched its first true consumer SSD, the 470, it was met with a generally good reception. Yet the timing of its release pretty much coincided with the arrival of drives using the second generation of LSI’s SandForce controller and its 6Gb/s SATA 3 interface. Hence, the 470 having a 3Gb/s SATA 2 interface was no match for this new breed in terms of performance.

Samsung SSD 840 series

Samsung's 840 series – the next generation

Undeterred, Samsung went back to its Korean headquarters and designed a drive that’s since become a classic, the SSD 830 – a 6Gb/s model that combined high performance with a very competitive price tag, even more so recently. And not being a company to rest on its laurels, Samsung's fourth generation of SSD is upon us.

The SSD 840 series has two model lines to choose from. Both are built on a 7mm format with the 840 Pro aimed at high performance/business sector and the 840 intended for consumers. As with the previous generations, the drives are Samsung through and through, with the company producing the controller, NAND, cache chips and writing the firmware. In the world of SSDs, this is a unique position for a manufacturer to be in.

Samsung’s fourth generation controller is the MDX – coded S4LN021X01-8030. Just like the MCX chip in the 830, a three core ARM design is used. In this instance, it's the ARM Cortex–R4 clocked at 300MHz, some 80MHz faster than the MCX ARM 9 chip in the 830. The MDX supports eight channels and up 1TB of NAND with between seven per cent and 24 per cent being set aside for over-provisioning, but by using Samsung’s excellent Magician utility, this can be manually adjusted depending on need.

While the 830 had a cache of 256MB, this has been doubled in the 840 to 512MB in both the 256GB and 512GB units. Also, the DDR type has been changed to low power DDR2-1066 LPDDR2 chips. The MDX supports AES-256 encryption – something that’s normally found in enterprise class drives.

The 830 series uses Samsung’s 27nm Toggle 1.0 NAND, which supports data transfer rates of up to 133Mbps. For the 840 Pro drives, Samsung are using its latest 21nm Toggle 2.0 interfaced two-bit per cell MLC NAND which can manage much faster data transfers – up to 400Mbps.

Samsung SSD 840 series

Secure remote control for conventional and virtual desktops

Next page: Cell division

More from The Register

next story
So, Apple won't sell cheap kit? Prepare the iOS garden wall WRECKING BALL
It can throw the low cost race if it looks to the cloud
End of buttons? Apple looks to patent animating iPhone sidewalls
Filing suggests handset with display strips
Samsung Gear S: Quick, LAUNCH IT – before Apple straps on iWatch
Full specs for wrist-mounted device here ... but who'll buy it?
Apple promises to lift Curse of the Drained iPhone 5 Battery
Have you tried turning it off and...? Never mind, here's a replacement
Now that's FIRE WIRE: HP recalls 6 MILLION burn-risk laptop cables
Right in the middle of Burning Mains Man week
Apple's iWatch? They cannae do it ... they don't have the POWER
Analyst predicts fanbois will have to wait until next year
Reg man looks through a Glass, darkly: Google's toy ploy or killer tech specs?
Tip: Put the shades on and you'll look less of a spanner
HUGE iPAD? Maybe. HUGE ADVERTS? That's for SURE
Noo! Hand not big enough! Don't look at meee!
AMD unveils 'single purpose' graphics card for PC gamers and NO ONE else
Chip maker claims the Radeon R9 285 is 'best in its class'
prev story

Whitepapers

Gartner critical capabilities for enterprise endpoint backup
Learn why inSync received the highest overall rating from Druva and is the top choice for the mobile workforce.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.