Specifications

Dell
PowerEdge R715 Technical Guide 29
DIMM slots have the following characteristics:
 The first DIMM slot in each channel is color-coded with white ejection tabs for ease of
installation.
 The DIMM sockets are placed 440 mils (11.12 mm) apart, center-to-center in order to provide
enough space for sufficient airflow to cool stacked DIMMs.
 Each memory channel carries 64 data and 8 ECC bits.
For more information on memory, see the System Memory section in the Installing System
Components chapter in the PowerEdge R715 Hardware Owner’s Manual on Support.Dell.com.
6.4 Speed
Each processor has 4 DDR3 channels capable of supporting speeds up to 1333 MHz.
Single-, dual-, and mixed- (single and dual) rank DIMM types can support speeds up to 1333 MHz.
Quad-rank DIMMs can support speeds up to 1066 MHz.
6.5 Sparing
Memory sparing is supported. Sparing requires a fully populated memory configuration (16 DIMMs).
See the Supported Configurations table below.
6.6 Mirroring
No mirroring support.
6.7 Memory Scrubbing
The R715 memory interface supports memory scrubbing (sequential or redirection) and patrol
scrubbing, single-bit correction and multi-bit error detection. The failure of an x4 DRAM device
results in errors to one ECC symbol and can be corrected (chipkill). The failure of an x8 DRAM device
results in errors to two ECC symbols, and can be detected but cannot be corrected.
6.8 RAID
No RAID memory support.
6.9 Supported Configurations
Table 10. Supported Configurations
DIMM Type 1
DIMM Type 2
System
Capacity
# of
CPUs
DIMM
Type
DIMM
Capacity
# of
DIMMs
DIMM
Capacity
# of
DIMMs
1Gb or
2Gb
based
Data
width
4 GB
2
RDIMM
1
4
—
—
1
x8
8 GB
2
RDIMM
1
8
—
—
1
x8
16 GB
2
UDIMM
2
8
—
—
1
x8
16 GB
2
RDIMM
2
8
—
—
1
x8
32 GB
2
UDIMM
2
16
—
—
1
x8