Tag Archives: MetaRAM

Is Montage another MetaRAM ?

Intel Capital invests again

UPDATE: 07/06/2012 – non-viability of LRDIMMs
UPDATE: 07/06/2012 – now a Montage 1333MHz version like Inphi

One memory module maker makes a departure from usual practice (a memory module maker usually picks ONE of the buffer chipset suppliers in order to minimize SKUs) by producing LRDIMMs based on BOTH an Inphi LRDIMM buffer chipset, as well as one from Montage.

This might be indicative of a perception at the memory module markers of higher risk associated with LRDIMMs/Inphi.

The Montage-based LRDIMMs however seem to underperform even the Inphi-based LRDIMMs.

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LRDIMMs similarities with MetaRAM

Patent reexamination as a double-edged sword

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

Some years ago MetaRAM arrived on the scene. It had the support of Intel (see link below) and some significant venture backing (Intel VC, Khosla Ventures).

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LRDIMM buffer chipset makers

Who makes LRDIMM buffer chipsets ?

UPDATE: 06/15/2012 – added Inphi comments on competitors
UPDATE: 06/15/2012 – added IDTI comments on Inphi/JEDEC
UPDATE: 06/29/2012 – institutional interest declines
UPDATE: 07/06/2012 – non-viability of LRDIMMs

The same players who make RDIMM buffer chipsets (that are used by memory module makers to make RDIMM memory modules).

LRDIMM buffer chipsets are currently only made by Inphi.

IDTI has prudently (after what you read below) postponed LRDIMMs to end of 2012 (i.e. skipping Romley and targeting the Ivy Bridge series according to their conference call).

Texas Instruments has not been interested in LRDIMMs – possibly related to settlement in Netlist vs. Texas Instruments a couple of years ago.

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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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