AMD Radeon RX 6400 vs AMD Radeon R9 280

VS

AMD Radeon RX 6400

AMD Radeon R9 280

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 3GB VRAM Radeon R9 280 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6400 's Advantages

Released 7 years and 10 months late

Boost Clock has increased by 149% (2321MHz vs 933MHz)

More VRAM (4GB vs 3GB)

Lower TDP (53W vs 200W)

AMD Radeon R9 280 's Advantages

Larger VRAM bandwidth (240.0GB/s vs 128.0GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6400 +6%

3.565 TFLOPS

Radeon R9 280

3.344 TFLOPS

3DMark Time Spy

Radeon RX 6400 +78%

3579

Radeon R9 280

2009

Radeon RX 6400

VS

Radeon R9 280

Graphics Card

Jan 2022

Release Date

Mar 2014

Navi II

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x4

Bus Interface

PCIe 3.0 x16

Clock Speeds

1923 MHz

Base Clock

827 MHz

2321 MHz

Boost Clock

933 MHz

2000 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

384bit

128.0GB/s

Bandwidth

240.0GB/s

Render Config

12

Compute Units

28

-

768

Shading Units

1792

48

TMUs

112

32

ROPs

32

-

12

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

768 KB

16 MB

L3 Cache

-

Theoretical Performance

74.27 GPixel/s

Pixel Rate

29.86 GPixel/s

111.4 GTexel/s

Texture Rate

104.5 GTexel/s

7.130 TFLOPS

FP16 (half)

-

3.565 TFLOPS

FP32 (float)

3.344 TFLOPS

222.8 GFLOPS

FP64 (double)

836.0 GFLOPS

Board Design

53W

TDP

200W

250 W

Suggested PSU

550 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

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

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Navi 24

GPU Name

Tahiti

Navi 24 XL (215-135000046)

GPU Variant

Tahiti PRO3 (215-0821330)

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

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

-

6.7

Shader Model

5.1

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