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TanjB
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Re: Intel's eDRAM
TanjB   8/8/2014 1:42:32 AM
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Refresh seems to consume about 0.5W.  The L4 latency is about half that of DDR channels, and the bandwidth about the same as 4 DDR4.  Typical hit rate 95% (that would be remarkably good in general, but maybe the gamer market is what they aim at where locality might be better).

Not clear this is better than a Memory Cube.  But probably much cheaper.

xys
User Rank
Rookie
Re: Intel's eDRAM
xys   8/8/2014 12:09:49 AM
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What is differenceof performance between Intel's L4 cache with eDRAM and regular DDR SDRAM on motherboard?

--

xys

resistion
User Rank
CEO
Re: Intel's eDRAM
resistion   8/7/2014 8:05:34 PM
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The DRAM will leak charge without a refresh, which requires power frequently every second. SRAM doesn't. Maybe SRAM doesn't sleep well enough anymore to conserve standby continuous power? What happened to near-threshold operation?

Susan Rambo
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Blogger
Re: Intel's eDRAM
Susan Rambo   8/7/2014 7:34:27 PM
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Interesting. The article only mentions "The eDRAM also required 1/5 of the keep-alive power compared with an SRAM device." Could you explain more about eDRAM's constant refresh and is that something that would be fixed someday, do you think?

resistion
User Rank
CEO
Re: Intel's eDRAM
resistion   8/7/2014 6:43:41 PM
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Power saving is limited by constant refresh of eDRAM.

Susan Rambo
User Rank
Blogger
Intel's eDRAM
Susan Rambo   8/7/2014 6:32:48 PM
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I'm curious to know what engineers' opinions are of the eDRAM. Techinsights has an interesting analysis of the technology here.

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