Tag Archives: Texas Instruments

Financial institutions retreat from Romley LRDIMM story

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Why are LRDIMMs single-sourced by Inphi ?

Inphi as a single point of failure

UPDATE: added 06/21/2012: added info on Montage
UPDATE: 07/06/2012 – now a Montage 1333MHz version like Inphi

The top 3 buffer chipset makers are Inphi, IDTI and Texas Instruments.

However Inphi is the only supplier of “iMB” LRDIMM buffer chipsets for Romley.

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Patent trolls at the JEDEC gate ?

How Netlist differs from Rambus

UPDATE: added 06/22/2012: Analyst on Inphi IPO potential

Rambus was guilty of taking information FROM JEDEC to inform it’s patenting activity, and thus “front-running” the JEDEC activities.

Netlist, in contrast, was an inventor of a technology that it revealed to a JEDEC member under NDA (Non-Disclosure Agreement), which was alleged to have been leaked by that JEDEC member (see below).

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Second take

UPDATE: added 06/24/2012: Invensas on LRDIMM design inferiority vs. HyperCloud

Basically LRDIMMs and DDR4 are both going to be using NLST IP.

This article gives a good introduction:

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First the short take

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

The new Intel Romley virtualization/data center servers from IBM and HP 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.

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HyperCloud, LRDIMMs and DDR4 and the future of server memory

I will try to examine some of the issues related to intellectual property and the constraints that are influencing DDR4 and the direction it will take.

Also an examination of LRDIMMs and their relevance.

And HyperCloud memory from Netlist (NLST).

The other players who may make an appearance:

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