AMD Radeon RX 6400 vs NVIDIA A40 PCIe

VS

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 48GB VRAM A40 PCIe to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6400 's Advantages

Released 1 years and 3 months late

Boost Clock has increased by 33% (2321MHz vs 1740MHz)

Lower TDP (53W vs 300W)

NVIDIA A40 PCIe 's Advantages

More VRAM (48GB vs 4GB)

Larger VRAM bandwidth (695.8GB/s vs 128.0GB/s)

9984 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6400

3.565 TFLOPS

A40 PCIe +949%

37.42 TFLOPS

Blender

Radeon RX 6400

325

A40 PCIe +1183%

4170

Radeon RX 6400

VS

A40 PCIe

Graphics Card

Jan 2022

Release Date

Oct 2020

Navi II

Generation

Tesla

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 4.0 x16

Clock Speeds

1923 MHz

Base Clock

1305 MHz

2321 MHz

Boost Clock

1740 MHz

2000 MHz

Memory Clock

1812 MHz

Memory

4GB

Memory Size

48GB

GDDR6

Memory Type

GDDR6

64bit

Memory Bus

384bit

128.0GB/s

Bandwidth

695.8GB/s

Render Config

-

SM Count

84

12

Compute Units

-

768

Shading Units

10752

48

TMUs

336

32

ROPs

112

-

Tensor Cores

336

12

RT Cores

84

128 KB per Array

L1 Cache

128 KB (per SM)

1024 KB

L2 Cache

6 MB

Theoretical Performance

74.27 GPixel/s

Pixel Rate

194.9 GPixel/s

111.4 GTexel/s

Texture Rate

584.6 GTexel/s

7.130 TFLOPS

FP16 (half)

37.42 TFLOPS

3.565 TFLOPS

FP32 (float)

37.42 TFLOPS

222.8 GFLOPS

FP64 (double)

584.6 GFLOPS

Graphics Processor

Navi 24

GPU Name

GA102

Navi 24 XL (215-135000046)

GPU Variant

-

RDNA 2.0

Architecture

Ampere

TSMC

Foundry

Samsung

6 nm

Process Size

8 nm

5.4 billion

Transistors

28.3 billion

107 mm²

Die Size

628 mm²

Board Design

53W

TDP

300W

250 W

Suggested PSU

700 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

3x DisplayPort 1.4a

None

Power Connectors

8-pin EPS

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

3.0

1.3

Vulkan

1.3

-

CUDA

8.6

6.6

Shader Model

6.6

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