Front cover IBM Power 750 and 755 Technical Overview and Introduction Features the POWER7 processor providing advanced multi-core technology Discusses Power 755 model for high performance computing Describes leading midrange performance Giuliano Anselmi Bruno Blanchard Younghoon Cho Christopher Hales Marcos Quezada ibm.com/redbooks Redpaper International Technical Support Organization IBM Power 750 and 755 Technical Overview and Introduction March 2010 REDP-4638-00 Note: Before using this information and the product it supports, read the information in “Notices” on page vii. First Edition (March 2010) This edition applies to the IBM Power 750 (8233-E8B) and IBM Power 755 (8236-E8C) Power Systems servers. © Copyright International Business Machines Corporation 2010. All rights reserved. Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Notices . vii Trademarks . viii Preface . ix The team who wrote this paper . ix Now you can become a published author, too! . xi Comments welcome. xi Stay connected to IBM Redbooks . xi Chapter 1. General description . 1 1.1 Overview of systems . 2 1.2 Operating environment . 4 1.3 Physical package . 4 1.4 System features . 6 1.4.1 Power 750 Express system features. 6 1.4.2 Power 755 system features . 7 1.4.3 Minimum features . 8 1.4.4 Power supply features . 10 1.4.5 Processor card features . 10 1.4.6 Memory features . 12 1.5 Disk and media features . 14 1.6 I/O drawers for Power 750 . 15 1.6.1 PCI-DDR 12X Expansion Drawers (#5796) . 15 1.6.2 12X I/O Drawer PCIe (#5802 and #5877). 16 1.6.3 I/O drawers and usable PCI slot . 16 1.7 Comparison between models . 17 1.8 Build to Order . 17 1.9 IBM Editions . 17 1.10 Model upgrades . 18 1.11 Hardware Management Console models . 18 1.12 System racks. 19 1.12.1 IBM 7014 Model T00 rack. 19 1.12.2 IBM 7014 Model T42 rack. 20 1.12.3 IBM 7014 Model S25 rack. 20 1.12.4 Feature number 0555 rack . 20 1.12.5 Feature number 0551 rack . 21 1.12.6 Feature number 0553 rack . 21 1.12.7 The AC power distribution unit and rack content . 21 1.12.8 Rack-mounting rules . 22 1.12.9 Useful rack additions. 22 1.12.10 OEM rack . 23 Chapter 2. Architecture and technical overview . 25 2.1 The IBM POWER7 processor . 27 2.1.1 POWER7 processor overview. 28 2.1.2 POWER7 processor core . 29 2.1.3 Simultaneous multithreading. 30 2.1.4 Memory access. 31 2.1.5 Flexible POWER7 processor packaging and offerings . 31 © Copyright IBM Corp. 2010. All rights reserved. iii 2.1.6 On-chip L3 cache innovation and Intelligent Cache . 32 2.1.7 POWER7 processor and Intelligent Energy . 33 2.1.8 Comparison of the POWER7 and POWER6 processors . 34 2.2 POWER7 processor cards . 34 2.3 Memory subsystem . 36 2.3.1 Registered DIMM . 36 2.3.2 Memory placement rules. 36 2.3.3 Memory throughput. 38 2.4 Capacity on Demand. 39 2.5 Technical comparison of Power 750 and Power 755 . 39 2.6 I/O buses and GX card . 40 2.7 Internal I/O subsystem . 40 2.7.1 Slot configuration . 41 2.7.2 System ports . 41 2.8 Integrated Virtual Ethernet adapter . 42 2.8.1 IVE features . 42 2.8.2 IVE subsystem . 43 2.9 PCI adapters . 43 2.9.1 LAN adapters . 44 2.9.2 Graphics accelerators . 45 2.9.3 SCSI and SAS adapters . 46 2.9.4 iSCSI. 47 2.9.5 Fibre Channel adapter . ..