AMD Radeon RX 7900 XTX vs AMD Radeon RX 6400

VS

AMD Radeon RX 7900 XTX

AMD Radeon RX 6400

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7900 XTX 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 7900 XTX 's Advantages

Released 10 months late

Boost Clock has increased by 8% (2498MHz vs 2321MHz)

More VRAM (24GB vs 4GB)

Larger VRAM bandwidth (960.0GB/s vs 128.0GB/s)

5376 additional rendering cores

AMD Radeon RX 6400 's Advantages

Lower TDP (53W vs 355W)

Score

Benchmark

FP32 (float)

Radeon RX 7900 XTX +1622%

61.39 TFLOPS

Radeon RX 6400

3.565 TFLOPS

3DMark Time Spy

Radeon RX 7900 XTX +755%

30621

Radeon RX 6400

3579

Blender

Radeon RX 7900 XTX +1301%

4680

Radeon RX 6400

334

Shadow of the Tomb Raider 2160p

Radeon RX 7900 XTX +1487%

127

Radeon RX 6400

8

Shadow of the Tomb Raider 1440p

Radeon RX 7900 XTX +1040%

228

Radeon RX 6400

20

Shadow of the Tomb Raider 1080p

Radeon RX 7900 XTX +785%

310

Radeon RX 6400

35

Cyberpunk 2077 2160p

Radeon RX 7900 XTX +650%

60

Radeon RX 6400

8

Cyberpunk 2077 1440p

Radeon RX 7900 XTX +881%

108

Radeon RX 6400

11

Cyberpunk 2077 1080p

Radeon RX 7900 XTX +738%

176

Radeon RX 6400

21

Radeon RX 7900 XTX

VS

Radeon RX 6400

Graphics Card

Nov 2022

Release Date

Jan 2022

Navi III

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x4

Clock Speeds

1929 MHz

Base Clock

1923 MHz

2498 MHz

Boost Clock

2321 MHz

2500 MHz

Memory Clock

2000 MHz

Memory

24GB

Memory Size

4GB

GDDR6

Memory Type

GDDR6

384bit

Memory Bus

64bit

960.0GB/s

Bandwidth

128.0GB/s

Render Config

96

Compute Units

12

-

6144

Shading Units

768

384

TMUs

48

192

ROPs

32

-

96

RT Cores

12

256 KB per Array

L1 Cache

128 KB per Array

6 MB

L2 Cache

1024 KB

96 MB

L3 Cache

16 MB

Theoretical Performance

479.6 GPixel/s

Pixel Rate

74.27 GPixel/s

959.2 GTexel/s

Texture Rate

111.4 GTexel/s

122.8 TFLOPS

FP16 (half)

7.130 TFLOPS

61.39 TFLOPS

FP32 (float)

3.565 TFLOPS

1.918 TFLOPS

FP64 (double)

222.8 GFLOPS

Board Design

355W

TDP

53W

750 W

Suggested PSU

250 W

1x HDMI 2.1a 2x DisplayPort 2.1 1x USB Type-C

Outputs

1x HDMI 2.1 1x DisplayPort 1.4a

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 31

GPU Name

Navi 24

Navi 31 XTX (215-145000146)

GPU Variant

Navi 24 XL (215-135000046)

RDNA 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

6 nm

57.7 billion

Transistors

5.4 billion

529 mm²

Die Size

107 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.2

1.3

Vulkan

1.3

-

6.7

Shader Model

6.7

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