Thoughts on DDR4 Memory due next year ?

[matt2155]

Thoughts on DDR4 Ram due to come on the market in 2013.

Most computers bought will have the new DDR4 Memory by 2015.
DDR4 is also giving us much better bandwidth compared to DDR3


DDR4: 2133 MT/s to 4266 MT/s
DDR3: 800 MT/s to 2133 MT/s

Also saying DDR4 having lower voltage & power consumption.

Read more here: http://www.tomshardware.com/news/DDR4-ISSCC-Elpida-Micron-Nanya,14813.html

 

[WR2]

DDR4 is also giving us much better [strike]speeds[/strike] bandwidth compared to DDR3l

 

[DDR4standard]

LRDIMMs at end-of-life and DDR4 copying NLST IP

IBM and the HP Gen8 DL360p and DL380p have support for Netlist (NLST) HyperCloud memory.

This is the memory DDR4 is going to copy (license).

LRDIMMs are already copying it - but have implemented it with asymmetrical lines - leading to latency issues - and inability to deliver 1333MHz at 3 DPC.

With HP Smart Memory HyperCloud - you can get 1333MHz at 3 DPC at 24DIMMs on the 2-processor DL360p and DL380p servers.


LRDIMM buffer chipsets are only made by Inphi (IDTI and Texas Instruments have delayed and backed off respectively). Inphi was the most aggressive against Netlist (NLST) - however they have recently failed in their challenge of NLST IP in patent reexaminations at the USPTO - NLST IP '537 and '274 have been reaffirmed by the USPTO with ALL claims intact - which reflects poorly on Inphi in NLST vs. Inphi.

LRDIMMs thus face legal risk (of possible recall ?).

DDR4 also copies NLST IP - but have chosen to also copy the symmetrical lines and distributed buffer approach.

JEDEC should eventually license NLST IP for DDR4 prior to finalization.

 

[DDR4standard]

Some comments regarding finalization of DDR4 standard and how server memory is moving to DDR4:

http://ddr3memory.wordpress.com/20 [...] imm-burns/
JEDEC fiddles with DDR4 while LRDIMM burns
June 7, 2012