techspot Zen 4 Epyc will support 12-channel DDR5 RAM

[UltraMega]

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The latest Linux Error Detection And Correction driver for Epyc processors adds support for AMD’s 19h, 10h-1Fh, and A0h-AFh models, as well as Registered DDR5 (RDDR) and Load-Reduced DDR5 (LRDDR) memory. AMD’s current Epyc CPUs only support DDR4 RAM, and we already know Zen 4 will work with DDR5.

 

RDDR and LRDDR are types of memory used for servers. Compared to typical DDR, the former offers them higher bandwidth and scalability, while the latter supports higher-density memory.

 

While the current Epycs are limited to eight memory controllers per socket, the patch confirms Zen 4 will have 12. It’s unclear how much of this information could apply to Zen 4 desktop CPUs.

 

AMD patch confirms Zen 4 Epyc will support 12-channel DDR5 RAM

WWW.TECHSPOT.COM

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The latest Linux Error Detection And Correction driver for Epyc processors adds support for AMD’s 19h...

12 channels seems like a lot... What does this mean for memory bandwidth?

 

 

Edited December 9, 2021 by UltraMega

[J7SC_Orion]

19 hours ago, UltraMega said:

AMD patch confirms Zen 4 Epyc will support 12-channel DDR5 RAM

WWW.TECHSPOT.COM

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The latest Linux Error Detection And Correction driver for Epyc processors adds support for AMD’s 19h...

12 channels seems like a lot... What does this mean for memory bandwidth? 

 

 

  

...a heck of a lot ! Alder Lake DDR5 w/ their'quad channel'  DDR5 config hit between 80 and 110 G/s on AIDA reads, depending on RAM specs.