Model
numb
er
OPN
2P/1P
Core
s
Thread
s
Base
freq
(Ghz)
All cores
boost
freq
(Ghz)
Max
boost
freq
(Ghz)
L3
(MB)
DDR
chann
els
Max DDR freq
(1DPC)
PCIe TDP (W)
7281
PS7281BEVGA
AF
2P OR
1P
16
32
2.10
2.70
2.70
32
8
2400/2666
X128 155/170
7251
PS7251BFV8S
AF
2P OR
1P
8
16
2.10
2.90
2.90
32
8
2400
X128 120
7261
PS7261BEV8R
AF
2P OR
1P
8
16
2.50
2.90
2.90
64
8
2400/2666
x128
155/170
NOTE:
For optimal performance, populate one DIMM per channel with DDR4-2666 memory modules on the first slot of each
memory channel. The first slot of each channel can be identified as the DIMM slots with white latches. For example, 64 GB
system memory capacity can be divided into 8 x 8 GB DIMM slots.
Table 40. Supported memory matrix
DIMM type
Rank
Capacity
DIMM rated voltage
and speed
Operating Speed
1 DPC
2 DPC
RDIMM
1R
8GB
DDR4 (1.2V), 2666
MT/s
2666 MT/s
2133 MT/s
RDIMM
2R
16GB , 32GB
DDR4 (1.2V), 2666
MT/s
2400 MT/s
2133 MT/s
LRDIMM
4R or 8R
64 or 128GB*
DDR4 (1.2V), 2666
MT/s
2666MT/s
2133 MT/s
* - Maximum DIMM capacity of 128 GB will be available at a later time.
Installing and removing system components
75
