NVIDIA RTX A4000 vs NVIDIA Quadro K420

VS

NVIDIA RTX A4000

NVIDIA Quadro K420

We compared two Professional market GPUs: 16GB VRAM RTX A4000 and 1024MB VRAM Quadro K420 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA RTX A4000 's Advantages

Released 6 years and 9 months late

Boost Clock1560MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (448.0GB/s vs 28.51GB/s)

5952 additional rendering cores

NVIDIA Quadro K420 's Advantages

Lower TDP (41W vs 140W)

Score

Benchmark

FP32 (float)

RTX A4000 +5605%

19.17 TFLOPS

Quadro K420

0.336 TFLOPS

RTX A4000

VS

Quadro K420

Graphics Card

Apr 2021

Release Date

Jul 2014

Quadro Ampere

Generation

Quadro

Professional

Type

Professional

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

735 MHz

Base Clock

-

1560 MHz

Boost Clock

-

1750 MHz

Memory Clock

891 MHz

Memory

16GB

Memory Size

1024MB

GDDR6

Memory Type

DDR3

256bit

Memory Bus

128bit

448.0GB/s

Bandwidth

28.51GB/s

Render Config

-

48

SM Count

-

6144

Shading Units

192

TMUs

16

96

ROPs

16

192

Tensor Cores

-

48

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per SMX)

4 MB

L2 Cache

256 KB

-

Theoretical Performance

149.8 GPixel/s

Pixel Rate

3.504 GPixel/s

299.5 GTexel/s

Texture Rate

14.02 GTexel/s

19.17 TFLOPS

FP16 (half)

-

19.17 TFLOPS

FP32 (float)

336.4 GFLOPS

299.5 GFLOPS

FP64 (double)

14.02 GFLOPS

Board Design

140W

TDP

41W

300 W

Suggested PSU

200 W

4x DisplayPort 1.4a

Outputs

1x DVI 1x DisplayPort 1.2

1x 6-pin

Power Connectors

None

Graphics Processor

GA104

GPU Name

GK107

GA104-875-A1

GPU Variant

GK107-301-A2

Ampere

Architecture

Kepler

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

17.4 billion

Transistors

1.27 billion

392 mm²

Die Size

118 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

8.6

CUDA

3.0

6.7

Shader Model

5.1

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