Dell EMC PowerEdge R750xs Service Manual

Figure 62. Memory socket location
Table 26. Supported memory matrix
DIMM type Rank Capacity DIMM rated voltage and speed Operating speed for
DIMMs per Channel
(DPC)
RDIMM 1R 8 GB DDR4 (1.2V), 3200 MT/s 3200 MT/s
2R 16 GB / 32 GB / 64 GB DDR4 (1.2V), 3200 MT/s 3200 MT/s
General memory module installation guidelines
To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory.
If your system's memory configurations fail to observe these guidelines, your system might not boot, stop responding during
memory configuration, or operate with reduced memory.
The memory bus may operate at speeds of 3200 MT/s, 2933 MT/s depending on the following factors:
● System profile selected (for example, Performance Optimized, or Custom [can be run at high speed or lower])
● Maximum supported DIMM speed of the processors
● Maximum supported speed of the DIMMs
NOTE: MT/s indicates DIMM speed in MegaTransfers per second.
The system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset
architectural configuration. The following are the recommended guidelines for installing memory modules:
● All DIMMs must be DDR4.
● x4 and x8 DRAM based memory modules can be mixed.
● If memory modules with different speeds are installed, they operate at the speed of the slowest installed memory module(s).
● Populate memory module sockets only if a processor is installed.
Installing and removing system components
69

Dell EMC PowerEdge R750xs Specifications

General

Management	iDRAC9 with Lifecycle Controller
Processor	Up to two 3rd Generation Intel Xeon Scalable processors, with up to 32 cores per processor
Memory	Up to 1TB DDR4 at 3200MT/s; 16 DIMM slots
Storage	Up to 12 x 3.5" drives (SAS/SATA/NVMe)
RAID Support	H355
Power Supply	800W, 1100W, 1400W Platinum
Network	OCP 3.0 Network Daughter Card options, up to 2x 25GbE
Form Factor	2U rack
Dimensions	Height: 86.8 mm (3.41 inches), Width: 482.0 mm (18.98 inches)
Expansion Slots	Up to 5 PCIe Gen4 slots
GPU Support	Supports up to 2 single-width GPUs
Operating System Support	Canonical Ubuntu Server LTS, Red Hat Enterprise Linux, SUSE Linux Enterprise Server