IBM NeXtScale System User Manual

Chapter 4. IBM NeXtScale nx360 M4 compute node 95
Table 4-22 Comparison of NVIDIA GPUs
Use Case
High Performance Computing Virtual Graphics
Technical
Specifications
Tesla K40 Tesla K20X Tesla K20 Tesla K10 Grid K2 Grid K1
Peak
double-precision
FP performance
(board)
1.43
Tflops
1.31
Tflops
1.17
Tflops
0.19
Tflops
N/A N/A
Peak
single-precision FP
performance
(board)
4.29
Tflops
3.95
Tflops
3.52
Tflops
4.58
Tflops
4.30 Tflops
(2 x 2.15
Tflops)
N/A
Number of physical
GPUs
1x GK110B 1x GK110 1x GK110 2x GK104 4x GK107
Number of CUDA
cores
2,880 2,688 2,496 3,072 (2 x 1,536) 768
(4 x 192)
Memory size per
board
12 GB 6 GB 5 GB 8 GB (2 x 4 GB) 16 GB
(4 x 4 GB)
Memory bandwidth
per board
288 Gb/s 250 Gb/s 208 Gb/s 320 Gb/s 116 Gb/s
Memory I/O 384-bit GDDR5 320-bit GDDR5 256-bit GDDR5 128-bit DDR3
Max Power 235W 225W 130W
Aux Power 1 x 8-pin and 1 x 6-pin 1 x 6-pin
PCI Interface Gen 3 x16 Gen 2 x16 Gen3 x16
Physical display
connectors
None
Cooling Passive, Active Passive Passive, Active Passive
Memory Clock 3.0 GHz 2.6 GHz 2.5 GHz 891 MHz
NVIDIA GPU Boost Yes No
Base Core Clock 745 MHz 732MHz 706MHz 745 MHz 850 MHz
Boost Clocks 810 MHz
875 MHz
Not applicable
Memory Error
Protection
Yes Enabled (External & Internal) Yes (External Only) No

IBM NeXtScale System Specifications

General

Brand	IBM
Model	NeXtScale System
Category	Server
Language	English