NVIDIA Tesla K20m vs NVIDIA Tesla T40 24 GB

VS

NVIDIA Tesla K20m

NVIDIA Tesla T40 24 GB

We compared two Professional market GPUs: 5GB VRAM Tesla K20m and 24GB VRAM Tesla T40 24 GB to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Tesla K20m 's Advantages

Lower TDP (225W vs 260W)

NVIDIA Tesla T40 24 GB 's Advantages

Boost Clock1560MHz

More VRAM (24GB vs 5GB)

Larger VRAM bandwidth (624.0GB/s vs 208.0GB/s)

2112 additional rendering cores

Score

Benchmark

FP32 (float)

Tesla K20m

3.524 TFLOPS

Tesla T40 24 GB +308%

14.38 TFLOPS

Tesla K20m

VS

Tesla T40 24 GB

Graphics Card

Jan 2013

Release Date

Unknown

Tesla

Generation

Tesla Turing

Professional

Type

Professional

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1305 MHz

-

Boost Clock

1560 MHz

1300 MHz

Memory Clock

1625 MHz

Memory

5GB

Memory Size

24GB

GDDR5

Memory Type

GDDR6

320bit

Memory Bus

384bit

208.0GB/s

Bandwidth

624.0GB/s

Render Config

-

SM Count

72

2496

Shading Units

4608

208

TMUs

288

40

ROPs

96

-

Tensor Cores

576

-

RT Cores

72

16 KB (per SMX)

L1 Cache

64 KB (per SM)

1280 KB

L2 Cache

6 MB

-

Theoretical Performance

36.71 GPixel/s

Pixel Rate

149.8 GPixel/s

146.8 GTexel/s

Texture Rate

449.3 GTexel/s

-

FP16 (half)

28.75 TFLOPS

3.524 TFLOPS

FP32 (float)

14.38 TFLOPS

1175 GFLOPS

FP64 (double)

449.3 GFLOPS

Board Design

225W

TDP

260W

550 W

Suggested PSU

600 W

No outputs

Outputs

No outputs

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GK110

GPU Name

TU102

-

Kepler

Architecture

Turing

TSMC

Foundry

TSMC

28 nm

Process Size

12 nm

7.08 billion

Transistors

18.6 billion

561 mm²

Die Size

754 mm²

Graphics Features

12 (11_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.5

CUDA

7.5

5.1

Shader Model

6.7

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