NVIDIA Quadro K420 vs NVIDIA Quadro P400

VS

NVIDIA Quadro K420

NVIDIA Quadro P400

We compared two Professional market GPUs: 1024MB VRAM Quadro K420 and 2GB VRAM Quadro P400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Quadro P400 's Advantages

Released 2 years and 7 months late

Boost Clock1252MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (32.06GB/s vs 28.51GB/s)

64 additional rendering cores

Lower TDP (30W vs 41W)

Score

Benchmark

FP32 (float)

Quadro K420

0.336 TFLOPS

Quadro P400 +90%

0.641 TFLOPS

Quadro K420

VS

Quadro P400

Graphics Card

Jul 2014

Release Date

Feb 2017

Quadro

Generation

Quadro

Professional

Type

Professional

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1228 MHz

-

Boost Clock

1252 MHz

891 MHz

Memory Clock

1002 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

64bit

28.51GB/s

Bandwidth

32.06GB/s

Render Config

-

SM Count

2

192

Shading Units

256

16

TMUs

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

48 KB (per SM)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

3.504 GPixel/s

Pixel Rate

20.03 GPixel/s

14.02 GTexel/s

Texture Rate

20.03 GTexel/s

-

FP16 (half)

10.02 GFLOPS

336.4 GFLOPS

FP32 (float)

641.0 GFLOPS

14.02 GFLOPS

FP64 (double)

20.03 GFLOPS

Board Design

41W

TDP

30W

200 W

Suggested PSU

200 W

1x DVI 1x DisplayPort 1.2

Outputs

3x mini-DisplayPort 1.4a

None

Power Connectors

None

Graphics Processor

GK107

GPU Name

GP107

GK107-301-A2

GPU Variant

GP107-825-KA-A1

Kepler

Architecture

Pascal

TSMC

Foundry

Samsung

28 nm

Process Size

14 nm

1.27 billion

Transistors

3.3 billion

118 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

3.0

CUDA

6.1

5.1

Shader Model

6.4

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