NVIDIA Tesla K20Xm vs NVIDIA Quadro P400

VS

NVIDIA Tesla K20Xm

NVIDIA Quadro P400

We compared two Professional market GPUs: 6GB VRAM Tesla K20Xm and 2GB VRAM Quadro P400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Tesla K20Xm 's Advantages

More VRAM (6GB vs 2GB)

Larger VRAM bandwidth (249.6GB/s vs 32.06GB/s)

2432 additional rendering cores

NVIDIA Quadro P400 's Advantages

Released 4 years and 3 months late

Boost Clock1252MHz

Lower TDP (30W vs 235W)

Score

Benchmark

FP32 (float)

Tesla K20Xm +513%

3.935 TFLOPS

Quadro P400

0.641 TFLOPS

OctaneBench

Tesla K20Xm +600%

63

Quadro P400

9

Tesla K20Xm

VS

Quadro P400

Graphics Card

Nov 2012

Release Date

Feb 2017

Tesla

Generation

Quadro

Professional

Type

Professional

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1228 MHz

-

Boost Clock

1252 MHz

1300 MHz

Memory Clock

1002 MHz

Memory

6GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

64bit

249.6GB/s

Bandwidth

32.06GB/s

Render Config

-

SM Count

2

2688

Shading Units

256

224

TMUs

16

48

ROPs

16

-

16 KB (per SMX)

L1 Cache

48 KB (per SM)

1536 KB

L2 Cache

512 KB

-

Theoretical Performance

40.99 GPixel/s

Pixel Rate

20.03 GPixel/s

164.0 GTexel/s

Texture Rate

20.03 GTexel/s

-

FP16 (half)

10.02 GFLOPS

3.935 TFLOPS

FP32 (float)

641.0 GFLOPS

1312 GFLOPS

FP64 (double)

20.03 GFLOPS

Board Design

235W

TDP

30W

550 W

Suggested PSU

200 W

No outputs

Outputs

3x mini-DisplayPort 1.4a

-

Power Connectors

None

Graphics Processor

GK110

GPU Name

GP107

-

GPU Variant

GP107-825-KA-A1

Kepler

Architecture

Pascal

TSMC

Foundry

Samsung

28 nm

Process Size

14 nm

7.08 billion

Transistors

3.3 billion

561 mm²

Die Size

132 mm²

Graphics Features

12 (11_0)

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

6.4

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