IBM Power 740

IBM Power System S824

Processor

POWER7+

POWER8

Sockets

1 (upgradeable) / 2

1 (upgradeable) / 2

Max Cores

8 / 16

8 / 24

Maximum Memory

512GB / 1TB @ 1066 MHz

512GB / 1TB @ 1600 MHz

Memory Cache

No

Yes

Memory Bandwidth

136 GB/sec

384 GB/sec

Memory DRAM Spare

No

Yes

System unit PCIe slots

6 PCIe Gen2 FH
Opt 4 PCIe Gen2 LP

7 / 11 PCIe Gen3  FH

CAPI (Capable slots)

N / A

Two

PCIe Hot Plug Support

No

Yes

IO bandwidth

60 GB/sec

192 GB/sec

Ethernet ports

Quad 1 Gbt (x4 slot)

Quad 1 Gbt  (x8 Slot)

SAS  bays in system unit

6 or 8 SFF-1

12 SFF-3 bays
Or 18 SFF-3 + 8 SSD bays

Integrated write cache

Optional 175 MB

Optional effectively 7GB

Easy Tier Support

No

Yes

Integrated split backplane

Yes  ( 3 + 3 )

Yes ( 6 + 6 )

Service Processor

Generation 1

Generation 2