AMD Radeon RX 6400 vs AMD Radeon RX 550X 640SP

VS

AMD Radeon RX 6400 AMD Radeon RX 550X 640SP

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 2GB VRAM Radeon RX 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6400 's Advantages

Released 3 years and 9 months late

Boost Clock has increased by 117% (2321MHz vs 1071MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (128.0GB/s vs 96.00GB/s)

128 additional rendering cores

Lower TDP (53W vs 60W)

Score

Benchmark

FP32 (float)

Radeon RX 6400 +160%

3.565 TFLOPS

Radeon RX 550X 640SP

1.371 TFLOPS

Radeon RX 6400

VS

Radeon RX 550X 640SP

Graphics Card

Jan 2022

Release Date

Apr 2018

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 3.0 x8

Clock Speeds

1923 MHz

Base Clock

1019 MHz

2321 MHz

Boost Clock

1071 MHz

2000 MHz

Memory Clock

1500 MHz

Memory

4GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

128bit

128.0GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

-

12

Compute Units

10

768

Shading Units

640

48

TMUs

40

32

ROPs

16

-

Tensor Cores

-

12

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

1024 KB

Theoretical Performance

74.27 GPixel/s

Pixel Rate

17.14 GPixel/s

111.4 GTexel/s

Texture Rate

42.84 GTexel/s

7.130 TFLOPS

FP16 (half)

1371 GFLOPS

3.565 TFLOPS

FP32 (float)

1371 GFLOPS

222.8 GFLOPS

FP64 (double)

85.68 GFLOPS

Graphics Processor

Navi 24

GPU Name

Baffin

Navi 24 XL (215-135000046)

GPU Variant

Baffin LE

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

6 nm

Process Size

14 nm

5.4 billion

Transistors

3 billion

107 mm²

Die Size

123 mm²

Board Design

53W

TDP

60W

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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