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GPU Comparison
NVIDIA Tesla C870 vs NVIDIA Tesla K20s
NVIDIA Tesla C870 vs NVIDIA Tesla K20s
VS
NVIDIA Tesla C870
NVIDIA Tesla K20s
We compared two Professional market GPUs: 1536MB VRAM Tesla C870 and 5GB VRAM Tesla K20s to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla C870 's Advantages
Lower TDP (171W vs 225W)
NVIDIA Tesla K20s 's Advantages
Released 5 years and 9 months late
More VRAM (5GB vs 1GB)
Larger VRAM bandwidth (208.0GB/s vs 76.80GB/s)
2368 additional rendering cores
Score
Benchmark
FP32 (float)
Tesla C870
0.346 TFLOPS
Tesla K20s
+729%
2.87 TFLOPS
Tesla C870
VS
Tesla K20s
Graphics Card
May 2007
Release Date
Feb 2013
Tesla
Generation
Tesla
Professional
Type
Professional
PCIe 1.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
800 MHz
Memory Clock
1300 MHz
Memory
1536MB
Memory Size
5GB
GDDR3
Memory Type
GDDR5
384bit
Memory Bus
320bit
76.80GB/s
Bandwidth
208.0GB/s
Render Config
16
SM Count
-
-
Compute Units
-
128
Shading Units
2496
32
TMUs
208
24
ROPs
40
-
Tensor Cores
-
-
RT Cores
-
-
L1 Cache
16 KB (per SMX)
96 KB
L2 Cache
1280 KB
Theoretical Performance
14.40 GPixel/s
Pixel Rate
29.90 GPixel/s
38.40 GTexel/s
Texture Rate
119.6 GTexel/s
-
FP16 (half)
-
345.6 GFLOPS
FP32 (float)
2.870 TFLOPS
-
FP64 (double)
956.8 GFLOPS
Graphics Processor
G80
GPU Name
GK110
-
GPU Variant
-
Tesla
Architecture
Kepler
TSMC
Foundry
TSMC
90 nm
Process Size
28 nm
0.681 billion
Transistors
7.08 billion
484 mm²
Die Size
561 mm²
Board Design
171W
TDP
225W
450 W
Suggested PSU
550 W
No outputs
Outputs
No outputs
2x 6-pin
Power Connectors
-
Graphics Features
11.1 (10_0)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1 (1.0)
OpenCL
3.0
N/A
Vulkan
1.1
1.0
CUDA
3.5
4.0
Shader Model
5.1
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