AMD Radeon RX 6400 vs AMD Radeon 550X

VS

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 2GB VRAM Radeon 550X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6400 's Advantages

Released 2 years and 10 months late

Boost Clock has increased by 91% (2321MHz vs 1218MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (128.0GB/s vs 112.0GB/s)

256 additional rendering cores

AMD Radeon 550X 's Advantages

Lower TDP (50W vs 53W)

Score

Benchmark

FP32 (float)

Radeon RX 6400 +185%

3.565 TFLOPS

Radeon 550X

1.247 TFLOPS

Radeon RX 6400

VS

Radeon 550X

Graphics Card

Jan 2022

Release Date

Mar 2019

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 3.0 x8

Clock Speeds

1923 MHz

Base Clock

1082 MHz

2321 MHz

Boost Clock

1218 MHz

2000 MHz

Memory Clock

1750 MHz

Memory

4GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

128bit

128.0GB/s

Bandwidth

112.0GB/s

Render Config

-

SM Count

-

12

Compute Units

8

768

Shading Units

512

48

TMUs

32

ROPs

16

-

Tensor Cores

-

12

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

512 KB

Theoretical Performance

74.27 GPixel/s

Pixel Rate

19.49 GPixel/s

111.4 GTexel/s

Texture Rate

38.98 GTexel/s

7.130 TFLOPS

FP16 (half)

1247 GFLOPS

3.565 TFLOPS

FP32 (float)

1247 GFLOPS

222.8 GFLOPS

FP64 (double)

77.95 GFLOPS

Graphics Processor

Navi 24

GPU Name

Lexa

Navi 24 XL (215-135000046)

GPU Variant

Lexa PRO (215-0904018)

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

6 nm

Process Size

14 nm

5.4 billion

Transistors

2.2 billion

107 mm²

Die Size

103 mm²

Board Design

53W

TDP

50W

250 W

Suggested PSU

250 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

None

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.2

-

CUDA

-

6.6

Shader Model

6.4

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