Difference between revisions of "POWER8E"

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'''POWER8E''', '''POWER8 with NVLink''', or '''8335-GTB POWER8''' processors have a different socket than standard POWER8 chips.
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'''POWER8E''' (also known as '''POWER8 with NVLink''', '''8335-GTB POWER8''', or '''POWER8+''') processors have a different socket than standard POWER8 chips.
  
Compared to standard POWER8, the POWER8 with NVLink modifies:
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Compared to a standard POWER8 Single Chip Module (SCM), the POWER8 with NVLink modifies:
  
 
* 2<sup>nd</sup> CAPP unit added, X2 removed
 
* 2<sup>nd</sup> CAPP unit added, X2 removed

Revision as of 17:49, 3 January 2018

Processor Information
POWER8E
POWER ISA 2.07
Process node 22nm
Maximum slices 12
Maximum cores 12 SMT8
L2 cache / slice 512kB
L3 cache / slice 8MB
Production availability 2016
Production stepping(s) DD2.1
← POWER8 POWER9 →

POWER8E (also known as POWER8 with NVLink, 8335-GTB POWER8, or POWER8+) processors have a different socket than standard POWER8 chips.

Compared to a standard POWER8 Single Chip Module (SCM), the POWER8 with NVLink modifies:

  • 2nd CAPP unit added, X2 removed
  • x8 PHB
  • x8 IOP
  • A-bus removed, NVLink added
  • NVLink support added in extended ES
  • Chip height: 2 C4 rows added

Without A-bus or SMP over PCIe, the processors in a multisocket configuration instead use X-Bus for SMP. The chip size is 659 mm2, rather than 649 mm2 for POWER8, and only available for the S822LC for HPC, specifically the 8335-GTB model. [1][2]

External Links

References

  1. Caldeira, Alexandre Bicas; Haug, Volker. IBM Power System S822LC for High Performance Computing Introduction and Technical Overview (PDF). IBM Redpaper. ISBN 9780738455617.
  2. Gupta, Sumit. IBM & NVIDIA present the NVLink server you’ve been waiting for (HTML). 2016-09-08. IBM IT Infrastructure Blog.