AMD Radeon RX 6400 vs AMD Radeon RX 6900 XTX

VS

AMD Radeon RX 6400 AMD Radeon RX 6900 XTX

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 16GB VRAM Radeon RX 6900 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 330W)

AMD Radeon RX 6900 XTX 's Advantages

Boost Clock has increased by 5% (2435MHz vs 2321MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (576.0GB/s vs 128.0GB/s)

4352 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6400

3.565 TFLOPS

Radeon RX 6900 XTX +599%

24.93 TFLOPS

Radeon RX 6400

VS

Radeon RX 6900 XTX

Graphics Card

Jan 2022

Release Date

Unknown

Navi II

Generation

Navi II

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 4.0 x16

Clock Speeds

1923 MHz

Base Clock

2075 MHz

2321 MHz

Boost Clock

2435 MHz

2000 MHz

Memory Clock

2250 MHz

Memory

4GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

64bit

Memory Bus

256bit

128.0GB/s

Bandwidth

576.0GB/s

Render Config

-

SM Count

-

12

Compute Units

80

768

Shading Units

5120

48

TMUs

320

32

ROPs

128

-

Tensor Cores

-

12

RT Cores

80

128 KB per Array

L1 Cache

128 KB per Array

1024 KB

L2 Cache

4 MB

Theoretical Performance

74.27 GPixel/s

Pixel Rate

311.7 GPixel/s

111.4 GTexel/s

Texture Rate

779.2 GTexel/s

7.130 TFLOPS

FP16 (half)

49.87 TFLOPS

3.565 TFLOPS

FP32 (float)

24.93 TFLOPS

222.8 GFLOPS

FP64 (double)

1.558 TFLOPS

Graphics Processor

Navi 24

GPU Name

Navi 21

Navi 24 XL (215-135000046)

GPU Variant

Navi 21 XTXH (215-121000247)

RDNA 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

6 nm

Process Size

7 nm

5.4 billion

Transistors

26.8 billion

107 mm²

Die Size

520 mm²

Board Design

53W

TDP

330W

250 W

Suggested PSU

700 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

None

Power Connectors

2x 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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