NVIDIA Tesla K20s vs NVIDIA Tesla K80

VS

We compared two Professional market GPUs: 5GB VRAM Tesla K20s and 12GB VRAM Tesla K80 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Tesla K20s 's Advantages

Lower TDP (225W vs 300W)

NVIDIA Tesla K80 's Advantages

Released 1 years and 9 months late

Boost Clock824MHz

More VRAM (12GB vs 5GB)

Larger VRAM bandwidth (240.6GB/s vs 208.0GB/s)

Score

Benchmark

FP32 (float)

Tesla K20s

2.87 TFLOPS

Tesla K80 +43%

4.113 TFLOPS

Tesla K20s

VS

Tesla K80

Graphics Card

Feb 2013

Release Date

Nov 2014

Tesla

Generation

Tesla

Professional

Type

Professional

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

562 MHz

-

Boost Clock

824 MHz

1300 MHz

Memory Clock

1253 MHz

Memory

5GB

Memory Size

12GB

GDDR5

Memory Type

GDDR5

320bit

Memory Bus

384bit

208.0GB/s

Bandwidth

240.6GB/s

Render Config

-

SM Count

-

Compute Units

-

2496

Shading Units

2496

208

TMUs

208

40

ROPs

48

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

1280 KB

L2 Cache

1536 KB

Theoretical Performance

29.90 GPixel/s

Pixel Rate

42.85 GPixel/s

119.6 GTexel/s

Texture Rate

171.4 GTexel/s

-

FP16 (half)

-

2.870 TFLOPS

FP32 (float)

4.113 TFLOPS

956.8 GFLOPS

FP64 (double)

1371 GFLOPS

Graphics Processor

GK110

GPU Name

GK210

-

GPU Variant

GK210-885-A1

Kepler

Architecture

Kepler 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

7.08 billion

Transistors

7.1 billion

561 mm²

Die Size

561 mm²

Board Design

225W

TDP

300W

550 W

Suggested PSU

700 W

No outputs

Outputs

No outputs

-

Power Connectors

1x 8-pin

Graphics Features

12 (11_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.5

CUDA

3.7

5.1

Shader Model

5.1

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