NVIDIA Tesla M40 vs NVIDIA Tesla K20c
We compared two Professional market GPUs: 12GB VRAM Tesla M40 and 5GB VRAM Tesla K20c to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla M40 's Advantages
Released 3 years late
Boost Clock1112MHz
More VRAM (12GB vs 5GB)
Larger VRAM bandwidth (288.4GB/s vs 208.0GB/s)
576 additional rendering cores
NVIDIA Tesla K20c 's Advantages
Lower TDP (225W vs 250W)
Score
Benchmark
FP32 (float)
Tesla M40
+93%
6.832 TFLOPS
Tesla K20c
3.524 TFLOPS
OctaneBench
Tesla M40
+123%
123
Tesla K20c
55
Graphics Card
Nov 2015
Release Date
Nov 2012
Tesla Maxwell
Generation
Tesla
Professional
Type
Professional
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
948 MHz
Base Clock
-
1112 MHz
Boost Clock
-
1502 MHz
Memory Clock
1300 MHz
Memory
12GB
Memory Size
5GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
320bit
288.4GB/s
Bandwidth
208.0GB/s
Render Config
-
-
-
-
-
-
3072
Shading Units
2496
192
TMUs
208
96
ROPs
40
-
-
-
-
-
-
48 KB (per SMM)
L1 Cache
16 KB (per SMX)
3 MB
L2 Cache
1280 KB
-
-
-
Theoretical Performance
106.8 GPixel/s
Pixel Rate
36.71 GPixel/s
213.5 GTexel/s
Texture Rate
146.8 GTexel/s
-
-
-
6.832 TFLOPS
FP32 (float)
3.524 TFLOPS
213.5 GFLOPS
FP64 (double)
1175 GFLOPS
Board Design
250W
TDP
225W
600 W
Suggested PSU
550 W
No outputs
Outputs
No outputs
8-pin EPS
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
GM200
GPU Name
GK110
GM200-895-A1
GPU Variant
GK110-885-KA-A1
Maxwell 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
8 billion
Transistors
7.08 billion
601 mm²
Die Size
561 mm²
Graphics Features
12 (12_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
5.2
CUDA
3.5
6.7
Shader Model
5.1
