AMD Radeon RX 6400 vs AMD Radeon R9 285

VS

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 2GB VRAM Radeon R9 285 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 4 months late

Boost Clock2321MHz

More VRAM (4GB vs 2GB)

Lower TDP (53W vs 190W)

AMD Radeon R9 285 's Advantages

Larger VRAM bandwidth (176.0GB/s vs 128.0GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6400 +8%

3.565 TFLOPS

Radeon R9 285

3.29 TFLOPS

Radeon RX 6400

VS

Radeon R9 285

Graphics Card

Jan 2022

Release Date

Sep 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

-

2321 MHz

Boost Clock

-

2000 MHz

Memory Clock

1375 MHz

Memory

4GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

64bit

Memory Bus

256bit

128.0GB/s

Bandwidth

176.0GB/s

Render Config

-

SM Count

-

12

Compute Units

28

768

Shading Units

1792

48

TMUs

112

32

ROPs

32

-

Tensor Cores

-

12

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

512 KB

Theoretical Performance

74.27 GPixel/s

Pixel Rate

29.38 GPixel/s

111.4 GTexel/s

Texture Rate

102.8 GTexel/s

7.130 TFLOPS

FP16 (half)

3.290 TFLOPS

3.565 TFLOPS

FP32 (float)

3.290 TFLOPS

222.8 GFLOPS

FP64 (double)

205.6 GFLOPS

Graphics Processor

Navi 24

GPU Name

Tonga

Navi 24 XL (215-135000046)

GPU Variant

Tonga PRO (215-0851128)

RDNA 2.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

6 nm

Process Size

28 nm

5.4 billion

Transistors

5 billion

107 mm²

Die Size

366 mm²

Board Design

53W

TDP

190W

250 W

Suggested PSU

450 W

1x HDMI 2.1 1x DisplayPort 1.4a

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.2.170

-

CUDA

-

6.6

Shader Model

6.5

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