Features and specificationsThe following information is a summary of the features and specifications of theserver. Depending on the model, some features might not be available, or somespecifications might not apply.Table 1. Features and specificationsMicroprocessor:v Supports up to two Intel Xeon ™multi-core microprocessors (oneinstalled)v Level-3 cachev QuickPath Interconnect (QPI) linksspeed up to 6.4 GT per secondNote:v Use the Setup utility program todetermine the type and speed of themicroprocessors.v For a list of supported microprocessors,see http://www.ibm.com/servers/eserver/serverproven/compat/us/.Memory:v Minimum: 1 GBv Maximum: 128 GBv Type: PC3-10600R-999 (single-rank ordual-rank), 800, 1067, and 1333 MHz,ECC, DDR3 registered SDRAM DIMMsonlyv Slots: 16 dual inlinev Supports 1 GB, 2 GB, 4 GB, and 8 GBDIMMsSATA optical drives:v CD-RW/DVD-ROM combo (optional)v DVD-ROM (optional)v Multi-burner (optional)Hot-swap fans:The server comes standard with sixdual-motor hot-swap fans.Hard disk drive expansion bays(depending on the model):v Six 2.5-inch hot-swap SAS orhot-swap SATA hard disk drive baysv Four 2.5-inch simple-swap, solid stateSATA hard disk drive baysPCI expansion slots:Supports two PCI riser slots:v Slot 1 supports low-profile cards (PCIExpress Gen2 x16 or PCI-X 1.0a64-bit/133 MHz ).v Slot 2 supports half-length, full-heightcards (PCI Express Gen2 x16 orPCI-X 1.0a 64-bit/133 MHz).Video controller (integrated into IMM):v Matrox G200eV (two analog ports -one front and one rear that can beconnected at the same time)Note: The maximum video resolutionis 1600 x 1200 at 75 Hz.– SVGA compatible video controller– DDR2 250 MHz SDRAM videomemory controller– Avocent Digital Video Compression– 16 MB of video memory (notexpandable)Power supply: Maximum of two hot-swappower supplies for redundancy supportv 675-watt ac (110 or 220 V acauto-sensing)v 675-watt dc (-48 V or -60 V dc)Environment:v Air temperature:– Server on: 10°C to 35°C (50°F to95°F); altitude: 0 to 914.4 m (3000 ft),decrease system temperature by1.0°C for every 1000-foot increase inaltitude– Server off: 5°C to 45°C (41°F to113°F); maximum altitude: 3048 m(10000 ft)– Shipment: -40°C to 60°C(-40°F to 140°F); maximum altitude:3048 m (10000 ft)v Humidity:– Server on: 8% to 80%– Server off: 8% to 80%v Particulate contamination:Attention: Airborne particulates andreactive gases acting alone or incombination with other environmentalfactors such as humidity or temperaturemight pose a risk to the server. Forinformation about the limits forparticulates and gases, see “Particulatecontamination” on page 113.Heat output:Approximate heat output:v Minimum configuration: 662 Btu per hour(194 watts)v Maximum configuration: 2302 Btu perhour (675 watts)6 IBM System x3550 M2 Types 4198 and 7946: Installation and User’s Guide