ThinkSystem SR850 Rack Type Lenovo Server 4 Sockets

Machine types

7X19 - 3 year warranty

Processor

Up to four second-generation Intel Xeon Processor Scalable Family of processors, either Gold or Platinum level processors
(formerly codename "Cascade Lake"). Supports processors up to 28 cores, core speeds up to 3.8 GHz, and TDP ratings up to 205W. Two
processor sockets on the system board and two processors on the Processor and Memory Expansion Tray (standard on most models). Two
Intel Ultra Path Interconnect (UPI) links at 10.4 GT/s each. Four processors are connected in a ring topology.

Memory

Up to 48 DIMM slots (12 DIMMs per processor). Each processor has 6 memory channels, with 2 DIMMs per channel. Lenovo TruDDR4
RDIMMs, LRDIMMs and 3DS RDIMMs are supported. There are 24 DIMM sockets on the system board, and an additional 24 DIMM sockets on
the processor and memory expansion tray (standard on most models).
DIMM slots are shared between standard system memory and persistent memory. DIMMs are available in three speeds: 2666 MHz, 2933
MHz and Performance+ 2933 MHz. Performance+ DIMMs support 2993 MHz with two DIMMs installed per channel (2DPC), whereas 2933 MHz
DIMMs support 2933 MHz with only 1 DIMM per channel (1DPC).

Drive Bays

Up to 16 2.5-inch hot-swap SAS/SATA bays.

Power Supply

Up to two hot-swap redundant AC power supplies (all 80 PLUS Platinum certification): 750 W, 1100 W and 1600 W AC options,
supporting 220 V AC. 750 W and 1100 W options also support 110V input supply. In China only, all power supply options support 240
V DC. Second power supply requires either Processor and Memory Expansion Tray or a power interposer card.