AMD Radeon RX 6400 vs AMD Radeon RX 6600

VS

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 8GB VRAM Radeon RX 6600 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6400's Advantages

Lower TDP (53W vs 132W)

AMD Radeon RX 6600's Advantages

Boost Clock has increased by 7% (2491MHz vs 2321MHz)

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (224.0GB/s vs 128.0GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6400

3.565 TFLOPS

Radeon RX 6600 +150%

8.928 TFLOPS

3DMark Time Spy

Radeon RX 6400

3579

Radeon RX 6600 +125%

8084

Shadow of the Tomb Raider 2160p

Radeon RX 6400

8

Radeon RX 6600 +325%

34

Shadow of the Tomb Raider 1440p

Radeon RX 6400

20

Radeon RX 6600 +255%

71

Shadow of the Tomb Raider 1080p

Radeon RX 6400

35

Radeon RX 6600 +260%

126

Cyberpunk 2077 2160p

Radeon RX 6400

8

Radeon RX 6600 +200%

24

Cyberpunk 2077 1440p

Radeon RX 6400

11

Radeon RX 6600 +181%

31

Cyberpunk 2077 1080p

Radeon RX 6400

21

Radeon RX 6600 +138%

50

Battlefield 5 2160p

Radeon RX 6400

19

Radeon RX 6600 +131%

44

Battlefield 5 1440p

Radeon RX 6400

36

Radeon RX 6600 +172%

98

Battlefield 5 1080p

Radeon RX 6400

48

Radeon RX 6600 +164%

127

Radeon RX 6400

VS

Radeon RX 6600

Graphics Card

Jan 2022

Release Date

Oct 2021

Navi II

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 4.0 x8

Clock Speeds

1923MHz

Base Clock

1626MHz

2321MHz

Boost Clock

2491MHz

2000MHz

Memory Clock

1750MHz

Memory

4GB

Memory Size

8GB

GDDR6

Memory Type

GDDR6

64bit

Memory Bus

128bit

128.0 GB/s

Bandwidth

224.0 GB/s

Render Config

-

SM Count

-

12

Compute Units

28

768

Shading Units

1792

48

TMUs

112

32

ROPs

64

-

Tensor Cores

-

12

RT Cores

28

128 KB per Array

L1 Cache

128 KB per Array

1024KB

L2 Cache

2MB

Theoretical Performance

74.27 GPixel/s

Pixel Rate

159.4 GPixel/s

111.4 GTexel/s

Texture Rate

279.0 GTexel/s

7.130 TFLOPS

FP16 (half)

17.86 TFLOPS

3.565 TFLOPS

FP32 (float)

8.928 TFLOPS

222.8 GFLOPS

FP64 (double)

558.0 GFLOPS

Graphics Processor

Navi 24

GPU Name

Navi 23

Navi 24 XL (215-135000046)

GPU Variant

Navi 23 XL (215-130000016)

RDNA 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

6 nm

Process Size

7 nm

5,400 million

Transistors

11,060 million

107mm²

Die Size

237mm²

Board Design

53W

TDP

132W

250W

Suggested PSU

300W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

None

Power Connectors

1x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.3

-

CUDA

-

6.6

Shader Model

6.5

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