Feeds

Micron preps fat DDR3 server memory

New technology memory gadgetry for servers

3 Big data security analytics techniques

Memory maker Micron Technology says that it has cooked up the first DDR3 main memory modules for servers to make use of a new technology, called load-reduced dual-inline memory module (LRDIMM) packaging. The new packaging will not only allow server makers to put fatter memory sticks into their boxes, but more of them than they otherwise would be able to.

Servers that employ Intel's current quad-core "Nehalem EP" Xeon 5500s for two-socket servers (launched in March) and future eight-core "Nehalem EX" Xeon 7500s for four-socket and larger servers (due at the end of the year for shipments in early 2010 inside servers) use DDR3 registered DIMM (RDIMM) memory. It is expected that Advanced Micro Devices' future twelve-core "Magny-Cours" and six-core "Lisbon" Opterons, IBM's eight-core Power7 chips, and Fujitsu's eight-core "Venus" Sparc64-VIII chips will also support DDR3 RDIMMs.

Micron, working with speciality chip maker Inphi, which sells a line of DDR2 and DDR3 main memory interface chips called ExacTik, says it can create fat memory modules with a low power profile. This is thanks to its 50 nanometer memory chips and a new load reducing memory interface.

The 16 GB memory modules that Micron has designed for servers use the company's 2 gigabit DDR3 memory chips, which run at 1.35 volts. The chip is currently being qualified with customers and is ramping up to volume production.

Micron is mixing these chips with Inphi's isolation memory buffer (iMB), which replaces the register on the DIMMs and can substantially cut down on the memory bus load between the memory modules and the processor sockets. This resulting LRDIMM chip can cut the memory bus load by 50 per cent on dual-rank modules and by 75 per cent on quad-rank modules compared to DDR3 RDIMM memory sticks being made today. Cutting down the load on the memory bus means that servers using this LRDIMM memory will, in theory, be able to run memory at faster speeds and boost the number of memory sticks they can put into a box.

Micron says that a typical server today (by which it has to mean a Nehalem EP box, since no other production server is supporting DDR3 memory yet) peters out at three quad-rank 16 GB RDIMMs per processor socket, or 48 GB. But using the LRDIMM approach being put forth by Micron, that same server could support nine quad-rank 16 GB modules, boosting capacity to 144 GB per socket. Right now, that is the maximum capacity of a Nehalem EP server using 8 GB RDIMMs, which are too expensive for anyone to contemplate anyway.

Micron says that its LRDIMMs have 57 per cent more bandwidth compared to RDIMMs, too, so there are performance as well as capacity benefits to the main memory.

Micron is sampling 8 GB LRDIMM modules with selected server makers, and expected to be pumping out 16 GB LRDIMM memory starting next year. No word on pricing yet. ®

SANS - Survey on application security programs

More from The Register

next story
This time it's 'Personal': new Office 365 sub covers just two devices
Redmond also brings Office into Google's back yard
Kingston DataTraveler MicroDuo: Turn your phone into a 72GB beast
USB-usiness in the front, micro-USB party in the back
Dropbox defends fantastically badly timed Condoleezza Rice appointment
'Nothing is going to change with Dr. Rice's appointment,' file sharer promises
BOFH: Oh DO tell us what you think. *CLICK*
$%%&amp Oh dear, we've been cut *CLICK* Well hello *CLICK* You're breaking up...
Bored with trading oil and gold? Why not flog some CLOUD servers?
Chicago Mercantile Exchange plans cloud spot exchange
Just what could be inside Dropbox's new 'Home For Life'?
Biz apps, messaging, photos, email, more storage – sorry, did you think there would be cake?
IT bods: How long does it take YOU to train up on new tech?
I'll leave my arrays to do the hard work, if you don't mind
prev story

Whitepapers

Designing a defence for mobile apps
In this whitepaper learn the various considerations for defending mobile applications; from the mobile application architecture itself to the myriad testing technologies needed to properly assess mobile applications risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.