Businesses today are demanding faster insights that analyze more data in new ways. They need to implement applications in days versus months, and they need to achieve all these goals while reducing IT costs. Cloud computing is quickly becoming both the delivery and consumption model for IT services, creating new demands on IT infrastructures and requiring new levels of performance and flexibility to respond to new business opportunities.

The IBM® Power® E850C system offers a unique blend of enterprise-class capabilities in a reliable, space-efficient 4-socket 4U form factor that delivers exceptional performance at an affordable price. With two to four IBM POWER8® processors at 3.65 GHz, 3.95 GHz or 4.22 GHz, up to 4 TB of DDR4 memory, built-in PowerVM virtualization and Capacity on Demand (CoD), no other 4-socket system in the industry delivers this combination of per-core performance, efficiency and business agility. The Power E850C is an ideal platform for medium-size businesses and as a departmental server or data center building block for large enterprise private cloud deployment.


  • Secure, reliable performance in a compact, 4-socket system
  • Built-in PowerVM® virtualization
  • Capacity on Demand for processor and memory
  • OpenStack based private cloud management
  • Cloud-based system inventory and performance monitoring


System configurations Model 8408-44E
Processor and Memory
Processors cores 48 at 3.65 GHz POWER8
40 at 3.95 GHz POWER8
32 at 4.22 GHz POWER8
Sockets 2 - 4
Level 2 (L3) cache per core 512 KB
Level 3 (L3) cache per core 8 MB eDRAM shared L3
Level 4 (L4) cache Up to 128 MB eDRAM L4 (off-chip) per socket
Enterprise Memory Up to 32 CDIMMs
128 GB to 4 TB
Processor-to-memory bandwidth 192 GBps per socket
Storage and IO
Integrated PCIe adapter slots Up to 11 hot-swap PCIe Gen3 slots
x16: 4 - 8 (2 per socket)
x8: 3 (one defaults to 2 x 10 Gb LAN)
Integrated SAS Controllers

Two in storage backplane, supporting standard RAID 0,5,6,10, 5T2, 6T2 and 10T2

  • Dual SAS Controller Backplane, with 7.2 GB write cache
  • Dual SAS Controller Backplane, without write cache
  • Split Disk Backplane (two single SAS controllers), without write cache
Integrated SAS bays for solid-state drives (SSD) or hard-disk drives 8 hot-swap SFF SAS drive bays (2.5″) + 4 SSD bays (1.8″)
Expansion features (optional – operating system dependencies)
DVD bay One
Max PCIe Gen3 I/O Drawers (12 PCIe Gen3 slots each) 4
Max DASD/SSD I/O Drawers (24 SFF bays each) 64 EXP24S I/O drawers
Standard features
Flexible Service Processor 1
IBM POWER Hypervisor™ LPAR, Dynamic LPAR; Virtual LAN (Memory to memory inter-partition communication)
PowerVM Enterprise Edition (Optional) 20 Micro-Partitions per processor; Multiple Shared Processor Pools; Virtual I/O Server; Shared Dedicated Capacity; Live Partition Mobility (LPM) and Active Memory Sharing* (AMS)
RAS features Processor Instruction Retry
Alternate Processor Recovery
Selective dynamic firmware updates
Chipkill memory
Memory DRAM sparing
Dynamic L3 cache column repair
Dynamic Processor de-allocation
Phase redundant, integrated sparing voltage regulator modules for processors, memory and I/O
Second generation service processor
Hot swappable Time-of-Day battery
Redundant, hot swappable power supplies
Redundant fans for SAS controllers and drive bays
Redundant, hot swappable fans for processor, memory and PCIe slots
Hot-swappable SAS bays
Hot-swappable PCIe slots
Dynamic de-allocation of logical partitions and PCIe bus slots
Extended error handling on PCIe slots
Active Memory Mirroring for Hypervisor (optional)
Capacity on Demand features (optional) Processor and/or Memory Capacity Upgrade on Demand (CUoD)
Elastic Processor and/or Memory Capacity on Demand (CoD)
Trial Processor and/or Memory CoD
Utility CoD
Cloud Management and Deployment features IBM Cloud PowerVC Manager
HMC Apps as a Service
IBM API Connect and WebSphere Connect
Open source cloud automation and configuration tooling for AIX
Power to Cloud Rewards – 5,000 points
IBM Cloud Starter Pack†
Operating systems AIX and Linux‡
High availability Power HA Editions
Power requirements Operating voltage: 200 to 240 V AC
System dimensions Four EIA (4U) space in a 19-inch rack
Width: 449 mm (17.6 in.)
Depth: 776 mm (30.6 in.)
Height: 175 mm (6.9 in.)

Performance data

Power Systems: open innovation to put data to work. The benchmark and performance data below demonstrate how IBM solutions can be optimized for a wide variety of workloads, each one providing you with performance you can count on.

Multiuser performance
Technology Sockets Cores Threads GHz rPerf*
POWER8 4 32 256 4.22 652.7
POWER8 4 40 320 3.95 766.5
POWER8 4 48 384 3.65 853.9

Product pricing


Call for price*

AIX, IBM i or Linux operating system

32-core 4.22 GHz POWER8 processor

512 GB DDR4


Call for price*

AIX, IBM i or Linux operating system

40-core 3.95 GHz POWER8 processor



Call for price*

AIX, IBM i or Linux operating system

48-core 3.5 GHz POWER8 processor


Additional models

Power System E850C models can be built to your specifications.
Please contact us for a customized quote. Call 1-866-872-3902 and mention priority code Power.


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Data sheet

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Power to Cloud Rewards Program

Helping you build and deliver private and hybrid cloud platforms on IBM Power Systems servers

IBM Redbooks

This paper introduces the IBM Power System S850 offerings and their relevant functions


Read the side-by-side comparisons, benchmark results, and comparisons of basic features of Power Systems


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