AMD Radeon RX 6400 vs AMD Radeon RX 7990 XTX

VS

AMD Radeon RX 6400

AMD Radeon RX 7990 XTX

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 24GB VRAM Radeon RX 7990 XTX 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 405W)

AMD Radeon RX 7990 XTX 's Advantages

Boost Clock has increased by 55% (3599MHz vs 2321MHz)

More VRAM (24GB vs 4GB)

Larger VRAM bandwidth (1152GB/s vs 128.0GB/s)

5376 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6400

3.565 TFLOPS

Radeon RX 7990 XTX +2381%

88.45 TFLOPS

Radeon RX 6400

VS

Radeon RX 7990 XTX

Graphics Card

Jan 2022

Release Date

Unknown

Navi II

Generation

Navi III

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 4.0 x16

Clock Speeds

1923 MHz

Base Clock

2500 MHz

2321 MHz

Boost Clock

3599 MHz

2000 MHz

Memory Clock

3000 MHz

Memory

4GB

Memory Size

24GB

GDDR6

Memory Type

GDDR6

64bit

Memory Bus

384bit

128.0GB/s

Bandwidth

1152GB/s

Render Config

12

Compute Units

96

-

768

Shading Units

6144

48

TMUs

384

32

ROPs

192

-

12

RT Cores

96

128 KB per Array

L1 Cache

256 KB per Array

1024 KB

L2 Cache

6 MB

16 MB

L3 Cache

192 MB

Theoretical Performance

74.27 GPixel/s

Pixel Rate

691.0 GPixel/s

111.4 GTexel/s

Texture Rate

1382 GTexel/s

7.130 TFLOPS

FP16 (half)

176.9 TFLOPS

3.565 TFLOPS

FP32 (float)

88.45 TFLOPS

222.8 GFLOPS

FP64 (double)

2.764 TFLOPS

Board Design

53W

TDP

405W

250 W

Suggested PSU

800 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

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

None

Power Connectors

3x 8-pin

Graphics Processor

Navi 24

GPU Name

Navi 31

Navi 24 XL (215-135000046)

GPU Variant

Navi 31 XTX+

RDNA 2.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

6 nm

Process Size

5 nm

5.4 billion

Transistors

57.7 billion

107 mm²

Die Size

529 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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