NVIDIA A40 PCIe vs AMD Radeon Pro W6400

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We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 4GB VRAM Radeon Pro W6400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA A40 PCIe 's Advantages

More VRAM (48GB vs 4GB)

Larger VRAM bandwidth (695.8GB/s vs 112.0GB/s)

9984 additional rendering cores

AMD Radeon Pro W6400 's Advantages

Released 1 years and 3 months late

Boost Clock has increased by 34% (2331MHz vs 1740MHz)

Lower TDP (50W vs 300W)

Score

Benchmark

FP32 (float)

A40 PCIe +945%

37.42 TFLOPS

Radeon Pro W6400

3.58 TFLOPS

Blender

A40 PCIe +1786%

4170

Radeon Pro W6400

221

A40 PCIe

VS

Radeon Pro W6400

Graphics Card

Oct 2020

Release Date

Jan 2022

Tesla

Generation

Radeon Pro

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x4

Clock Speeds

1305 MHz

Base Clock

2331 MHz

1740 MHz

Boost Clock

2331 MHz

1812 MHz

Memory Clock

1750 MHz

Memory

48GB

Memory Size

4GB

GDDR6

Memory Type

GDDR6

384bit

Memory Bus

64bit

695.8GB/s

Bandwidth

112.0GB/s

Render Config

84

SM Count

-

Compute Units

12

10752

Shading Units

768

336

TMUs

48

112

ROPs

32

336

Tensor Cores

-

84

RT Cores

12

128 KB (per SM)

L1 Cache

128 KB per Array

6 MB

L2 Cache

1024 KB

Theoretical Performance

194.9 GPixel/s

Pixel Rate

74.59 GPixel/s

584.6 GTexel/s

Texture Rate

111.9 GTexel/s

37.42 TFLOPS

FP16 (half)

7.161 TFLOPS

37.42 TFLOPS

FP32 (float)

3.580 TFLOPS

584.6 GFLOPS

FP64 (double)

223.8 GFLOPS

Graphics Processor

GA102

GPU Name

Navi 24

-

GPU Variant

Navi 24 XL-W

Ampere

Architecture

RDNA 2.0

Samsung

Foundry

TSMC

8 nm

Process Size

6 nm

28.3 billion

Transistors

5.4 billion

628 mm²

Die Size

107 mm²

Board Design

300W

TDP

50W

700 W

Suggested PSU

250 W

3x DisplayPort 1.4a

Outputs

2x DisplayPort 1.4a

8-pin EPS

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

3.0

OpenCL

2.2

1.3

Vulkan

1.3

8.6

CUDA

-

6.6

Shader Model

6.6

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