NVIDIA Tesla K40d vs NVIDIA Tesla P40

VS

NVIDIA Tesla K40d

NVIDIA Tesla P40

We compared two Professional market GPUs: 12GB VRAM Tesla K40d and 24GB VRAM Tesla P40 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Tesla K40d 's Advantages

Lower TDP (245W vs 250W)

NVIDIA Tesla P40 's Advantages

Released 2 years and 10 months late

Boost Clock has increased by 75% (1531MHz vs 876MHz)

More VRAM (24GB vs 12GB)

Larger VRAM bandwidth (347.1GB/s vs 288.4GB/s)

960 additional rendering cores

Score

Benchmark

FP32 (float)

Tesla K40d

5.046 TFLOPS

Tesla P40 +133%

11.76 TFLOPS

Tesla K40d

VS

Tesla P40

Graphics Card

Nov 2013

Release Date

Sep 2016

Tesla

Generation

Tesla Pascal

Professional

Type

Professional

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

745 MHz

Base Clock

1303 MHz

876 MHz

Boost Clock

1531 MHz

1502 MHz

Memory Clock

1808 MHz

Memory

12GB

Memory Size

24GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

384bit

288.4GB/s

Bandwidth

347.1GB/s

Render Config

-

SM Count

30

2880

Shading Units

3840

240

TMUs

240

48

ROPs

96

-

16 KB (per SMX)

L1 Cache

48 KB (per SM)

1536 KB

L2 Cache

3 MB

-

Theoretical Performance

52.56 GPixel/s

Pixel Rate

147.0 GPixel/s

210.2 GTexel/s

Texture Rate

367.4 GTexel/s

-

FP16 (half)

183.7 GFLOPS

5.046 TFLOPS

FP32 (float)

11.76 TFLOPS

1.682 TFLOPS

FP64 (double)

367.4 GFLOPS

Board Design

245W

TDP

250W

550 W

Suggested PSU

600 W

No outputs

Outputs

No outputs

-

Power Connectors

8-pin EPS

Graphics Processor

GK110B

GPU Name

GP102

-

Kepler

Architecture

Pascal

TSMC

Foundry

TSMC

28 nm

Process Size

16 nm

7.08 billion

Transistors

11.8 billion

561 mm²

Die Size

471 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.5

CUDA

6.1

5.1

Shader Model

6.7

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