NVIDIA RTX A4000 vs NVIDIA Quadro K620

VS

We compared two Professional market GPUs: 16GB VRAM RTX A4000 and 2GB VRAM Quadro K620 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 Clock has increased by 39% (1560MHz vs 1124MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (448.0GB/s vs 28.80GB/s)

5760 additional rendering cores

NVIDIA Quadro K620 's Advantages

Lower TDP (45W vs 140W)

Score

Benchmark

FP32 (float)

RTX A4000 +2121%

19.17 TFLOPS

Quadro K620

0.863 TFLOPS

RTX A4000

VS

Quadro K620

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

1058 MHz

1560 MHz

Boost Clock

1124 MHz

1750 MHz

Memory Clock

900 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

DDR3

256bit

Memory Bus

128bit

448.0GB/s

Bandwidth

28.80GB/s

Render Config

48

SM Count

-

Compute Units

-

6144

Shading Units

384

192

TMUs

24

96

ROPs

16

192

Tensor Cores

-

48

RT Cores

-

128 KB (per SM)

L1 Cache

64 KB (per SMM)

4 MB

L2 Cache

2 MB

Theoretical Performance

149.8 GPixel/s

Pixel Rate

17.98 GPixel/s

299.5 GTexel/s

Texture Rate

26.98 GTexel/s

19.17 TFLOPS

FP16 (half)

-

19.17 TFLOPS

FP32 (float)

863.2 GFLOPS

299.5 GFLOPS

FP64 (double)

26.98 GFLOPS

Graphics Processor

GA104

GPU Name

GM107

GA104-875-A1

GPU Variant

GM107-850-A2

Ampere

Architecture

Maxwell

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

17.4 billion

Transistors

1.87 billion

392 mm²

Die Size

148 mm²

Board Design

140W

TDP

45W

300 W

Suggested PSU

200 W

4x DisplayPort 1.4a

Outputs

1x DVI 1x DisplayPort 1.4a

1x 6-pin

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.3

8.6

CUDA

5.0

6.7

Shader Model

5.1

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