AMD Radeon RX 6600 vs AMD Radeon RX 6400

VS

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

Main Differences

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

AMD Radeon RX 6400 's Advantages

Lower TDP (53W vs 132W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 +150%

8.928 TFLOPS

Radeon RX 6400

3.565 TFLOPS

3DMark Time Spy

Radeon RX 6600 +125%

8081

Radeon RX 6400

3579

Shadow of the Tomb Raider 2160p

Radeon RX 6600 +325%

34

Radeon RX 6400

8

Shadow of the Tomb Raider 1440p

Radeon RX 6600 +255%

71

Radeon RX 6400

20

Shadow of the Tomb Raider 1080p

Radeon RX 6600 +260%

126

Radeon RX 6400

35

Cyberpunk 2077 2160p

Radeon RX 6600 +200%

24

Radeon RX 6400

8

Cyberpunk 2077 1440p

Radeon RX 6600 +181%

31

Radeon RX 6400

11

Cyberpunk 2077 1080p

Radeon RX 6600 +138%

50

Radeon RX 6400

21

Battlefield 5 2160p

Radeon RX 6600 +131%

44

Radeon RX 6400

19

Battlefield 5 1440p

Radeon RX 6600 +172%

98

Radeon RX 6400

36

Battlefield 5 1080p

Radeon RX 6600 +164%

127

Radeon RX 6400

48

Radeon RX 6600

VS

Radeon RX 6400

Graphics Card

Oct 2021

Release Date

Jan 2022

Navi II

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 4.0 x4

Clock Speeds

1626 MHz

Base Clock

1923 MHz

2491 MHz

Boost Clock

2321 MHz

1750 MHz

Memory Clock

2000 MHz

Memory

8GB

Memory Size

4GB

GDDR6

Memory Type

GDDR6

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

128.0GB/s

Render Config

-

SM Count

-

28

Compute Units

12

1792

Shading Units

768

112

TMUs

48

64

ROPs

32

-

Tensor Cores

-

28

RT Cores

12

128 KB per Array

L1 Cache

128 KB per Array

2 MB

L2 Cache

1024 KB

Theoretical Performance

159.4 GPixel/s

Pixel Rate

74.27 GPixel/s

279.0 GTexel/s

Texture Rate

111.4 GTexel/s

17.86 TFLOPS

FP16 (half)

7.130 TFLOPS

8.928 TFLOPS

FP32 (float)

3.565 TFLOPS

558.0 GFLOPS

FP64 (double)

222.8 GFLOPS

Graphics Processor

Navi 23

GPU Name

Navi 24

Navi 23 XL (215-130000016)

GPU Variant

Navi 24 XL (215-135000046)

RDNA 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

6 nm

11.06 billion

Transistors

5.4 billion

237 mm²

Die Size

107 mm²

Board Design

132W

TDP

53W

300 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

1x HDMI 2.1 1x DisplayPort 1.4a

1x 8-pin

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.2

1.3

Vulkan

1.3

-

CUDA

-

6.5

Shader Model

6.6

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