AMD Radeon HD 6670 vs AMD Radeon RX 6400

VS

AMD Radeon HD 6670

AMD Radeon RX 6400

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6670 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 6400 's Advantages

Released 10 years and 9 months late

Boost Clock2321MHz

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (128.0GB/s vs 64.00GB/s)

288 additional rendering cores

Lower TDP (53W vs 66W)

Score

Benchmark

FP32 (float)

Radeon HD 6670

0.768 TFLOPS

Radeon RX 6400 +364%

3.565 TFLOPS

Radeon HD 6670

VS

Radeon RX 6400

Graphics Card

Apr 2011

Release Date

Jan 2022

Northern Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x4

Clock Speeds

-

Base Clock

1923 MHz

-

Boost Clock

2321 MHz

1000 MHz

Memory Clock

2000 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

128.0GB/s

Render Config

6

Compute Units

12

-

480

Shading Units

768

24

TMUs

48

8

ROPs

32

-

RT Cores

12

8 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

1024 KB

-

L3 Cache

16 MB

Theoretical Performance

6.400 GPixel/s

Pixel Rate

74.27 GPixel/s

19.20 GTexel/s

Texture Rate

111.4 GTexel/s

-

FP16 (half)

7.130 TFLOPS

768.0 GFLOPS

FP32 (float)

3.565 TFLOPS

-

FP64 (double)

222.8 GFLOPS

Board Design

66W

TDP

53W

250 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

1x HDMI 2.1 1x DisplayPort 1.4a

None

Power Connectors

None

Graphics Processor

Turks

GPU Name

Navi 24

Turks XT (215-0803000)

GPU Variant

Navi 24 XL (215-135000046)

TeraScale 2

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

6 nm

0.716 billion

Transistors

5.4 billion

118 mm²

Die Size

107 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.2

N/A

Vulkan

1.3

-

5.0

Shader Model

6.7

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