AMD Radeon RX 6400 vs AMD Radeon HD 7970 X2

VS

AMD Radeon RX 6400 AMD Radeon HD 7970 X2

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 3GB VRAM Radeon HD 7970 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6400 's Advantages

Released 9 years and 5 months late

Boost Clock2321MHz

More VRAM (4GB vs 3GB)

Lower TDP (53W vs 500W)

AMD Radeon HD 7970 X2 's Advantages

Larger VRAM bandwidth (264.0GB/s vs 128.0GB/s)

1280 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6400

3.565 TFLOPS

Radeon HD 7970 X2 +6%

3.789 TFLOPS

Radeon RX 6400

VS

Radeon HD 7970 X2

Graphics Card

Jan 2022

Release Date

Aug 2012

Navi II

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 3.0 x16

Clock Speeds

1923 MHz

Base Clock

-

2321 MHz

Boost Clock

-

2000 MHz

Memory Clock

1375 MHz

Memory

4GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

384bit

128.0GB/s

Bandwidth

264.0GB/s

Render Config

-

SM Count

-

12

Compute Units

32

768

Shading Units

2048

48

TMUs

128

32

ROPs

32

-

Tensor Cores

-

12

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

768 KB

Theoretical Performance

74.27 GPixel/s

Pixel Rate

29.60 GPixel/s

111.4 GTexel/s

Texture Rate

118.4 GTexel/s

7.130 TFLOPS

FP16 (half)

-

3.565 TFLOPS

FP32 (float)

3.789 TFLOPS

222.8 GFLOPS

FP64 (double)

947.2 GFLOPS

Graphics Processor

Navi 24

GPU Name

New Zealand

Navi 24 XL (215-135000046)

GPU Variant

-

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

6 nm

Process Size

28 nm

5.4 billion

Transistors

4.313 billion

107 mm²

Die Size

352 mm²

Board Design

53W

TDP

500W

250 W

Suggested PSU

900 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

None

Power Connectors

3x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.2

OpenCL

1.2

1.3

Vulkan

1.2

-

CUDA

-

6.6

Shader Model

5.1

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