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GPU Comparison
NVIDIA Tesla K40m vs NVIDIA Tesla K20Xm
NVIDIA Tesla K40m vs NVIDIA Tesla K20Xm
VS
NVIDIA Tesla K40m
NVIDIA Tesla K20Xm
We compared two Professional market GPUs: 12GB VRAM Tesla K40m and 6GB VRAM Tesla K20Xm to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla K40m 's Advantages
Released 1 years late
Boost Clock876MHz
More VRAM (12GB vs 6GB)
Larger VRAM bandwidth (288.4GB/s vs 249.6GB/s)
192 additional rendering cores
NVIDIA Tesla K20Xm 's Advantages
Lower TDP (235W vs 245W)
Score
Benchmark
FP32 (float)
Tesla K40m
+28%
5.046 TFLOPS
Tesla K20Xm
3.935 TFLOPS
OctaneBench
Tesla K40m
+7%
68
Tesla K20Xm
63
Tesla K40m
VS
Tesla K20Xm
Graphics Card
Nov 2013
Release Date
Nov 2012
Tesla
Generation
Tesla
Professional
Type
Professional
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
745 MHz
Base Clock
-
876 MHz
Boost Clock
-
1502 MHz
Memory Clock
1300 MHz
Memory
12GB
Memory Size
6GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
384bit
288.4GB/s
Bandwidth
249.6GB/s
Render Config
-
SM Count
-
-
Compute Units
-
2880
Shading Units
2688
240
TMUs
224
48
ROPs
48
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
16 KB (per SMX)
1536 KB
L2 Cache
1536 KB
Theoretical Performance
52.56 GPixel/s
Pixel Rate
40.99 GPixel/s
210.2 GTexel/s
Texture Rate
164.0 GTexel/s
-
FP16 (half)
-
5.046 TFLOPS
FP32 (float)
3.935 TFLOPS
1.682 TFLOPS
FP64 (double)
1312 GFLOPS
Graphics Processor
GK110B
GPU Name
GK110
-
GPU Variant
-
Kepler
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
7.08 billion
Transistors
7.08 billion
561 mm²
Die Size
561 mm²
Board Design
245W
TDP
235W
550 W
Suggested PSU
550 W
No outputs
Outputs
No outputs
-
Power Connectors
-
Graphics Features
12 (11_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.1
3.5
CUDA
3.5
5.1
Shader Model
5.1
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