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GPU Comparison
NVIDIA Tesla K20m vs NVIDIA Tesla S870
NVIDIA Tesla K20m vs NVIDIA Tesla S870
VS
NVIDIA Tesla K20m
NVIDIA Tesla S870
We compared two Professional market GPUs: 5GB VRAM Tesla K20m and 1536MB VRAM Tesla S870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla K20m 's Advantages
Released 5 years and 8 months late
More VRAM (5GB vs 1GB)
Larger VRAM bandwidth (208.0GB/s vs 76.80GB/s)
2368 additional rendering cores
Lower TDP (225W vs 800W)
Score
Benchmark
FP32 (float)
Tesla K20m
+918%
3.524 TFLOPS
Tesla S870
0.346 TFLOPS
Tesla K20m
VS
Tesla S870
Graphics Card
Jan 2013
Release Date
May 2007
Tesla
Generation
Tesla
Professional
Type
Professional
PCIe 2.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1300 MHz
Memory Clock
800 MHz
Memory
5GB
Memory Size
1536MB
GDDR5
Memory Type
GDDR3
320bit
Memory Bus
384bit
208.0GB/s
Bandwidth
76.80GB/s
Render Config
-
SM Count
16
-
Compute Units
-
2496
Shading Units
128
208
TMUs
32
40
ROPs
24
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
-
1280 KB
L2 Cache
96 KB
Theoretical Performance
36.71 GPixel/s
Pixel Rate
14.40 GPixel/s
146.8 GTexel/s
Texture Rate
38.40 GTexel/s
-
FP16 (half)
-
3.524 TFLOPS
FP32 (float)
345.6 GFLOPS
1175 GFLOPS
FP64 (double)
-
Graphics Processor
GK110
GPU Name
G80
-
GPU Variant
-
Kepler
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
90 nm
7.08 billion
Transistors
0.681 billion
561 mm²
Die Size
484 mm²
Board Design
225W
TDP
800W
550 W
Suggested PSU
1200 W
No outputs
Outputs
No outputs
1x 6-pin + 1x 8-pin
Power Connectors
-
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
3.0
OpenCL
1.1 (1.0)
1.1
Vulkan
N/A
3.5
CUDA
1.0
5.1
Shader Model
4.0
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