NVIDIA Tesla P40 vs NVIDIA Tesla K20s

VS

We compared two Professional market GPUs: 24GB VRAM Tesla P40 and 5GB VRAM Tesla K20s to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Tesla P40 's Advantages

Released 3 years and 7 months late

Boost Clock1531MHz

More VRAM (24GB vs 5GB)

Larger VRAM bandwidth (347.1GB/s vs 208.0GB/s)

1344 additional rendering cores

NVIDIA Tesla K20s 's Advantages

Lower TDP (225W vs 250W)

Score

Benchmark

FP32 (float)

Tesla P40 +309%

11.76 TFLOPS

Tesla K20s

2.87 TFLOPS

Tesla P40

VS

Tesla K20s

Graphics Card

Sep 2016

Release Date

Feb 2013

Tesla Pascal

Generation

Tesla

Professional

Type

Professional

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1303 MHz

Base Clock

-

1531 MHz

Boost Clock

-

1808 MHz

Memory Clock

1300 MHz

Memory

24GB

Memory Size

5GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

320bit

347.1GB/s

Bandwidth

208.0GB/s

Render Config

30

SM Count

-

Compute Units

-

3840

Shading Units

2496

240

TMUs

208

96

ROPs

40

-

Tensor Cores

-

RT Cores

-

48 KB (per SM)

L1 Cache

16 KB (per SMX)

3 MB

L2 Cache

1280 KB

Theoretical Performance

147.0 GPixel/s

Pixel Rate

29.90 GPixel/s

367.4 GTexel/s

Texture Rate

119.6 GTexel/s

183.7 GFLOPS

FP16 (half)

-

11.76 TFLOPS

FP32 (float)

2.870 TFLOPS

367.4 GFLOPS

FP64 (double)

956.8 GFLOPS

Graphics Processor

GP102

GPU Name

GK110

-

GPU Variant

-

Pascal

Architecture

Kepler

TSMC

Foundry

TSMC

16 nm

Process Size

28 nm

11.8 billion

Transistors

7.08 billion

471 mm²

Die Size

561 mm²

Board Design

250W

TDP

225W

600 W

Suggested PSU

550 W

No outputs

Outputs

No outputs

8-pin EPS

Power Connectors

-

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

6.1

CUDA

3.5

6.7

Shader Model

5.1

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