GPU Comparison

A

AMD

RADEON

AMD Radeon R6 M255DX

CORE STATE Jet

VRAM System Shared

CLOCK SPEED 855 MHz

TDP —

BUS WIDTH System Shared

ARCHITECTURE GCN 1.0

nm

PROCESS 28 nm

LAUNCH DATE 2014

VS

A

AMD

RADEON

Radeon RX 6400

CORE STATE Navi 24

VRAM 4 GB

CLOCK SPEED 2321 MHz

TDP 53 W

BUS WIDTH 64 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 6 nm

LAUNCH DATE 2022

PERFORMANCE BENCHMARKS

geekbench_vulkan

4,867

38,040

3dmark_3dmark_steel_nomad_dx12

N/A

176

geekbench_opencl

N/A

32,977

passmark_directx_10

N/A

54

passmark_directx_11

N/A

70

passmark_directx_12

N/A

30

passmark_directx_9

N/A

93

passmark_g2d

N/A

722

passmark_g3d

N/A

7,673

passmark_gpu_compute

N/A

2,812

DETAILED SPECIFICATIONS

SPECIFICATION

R6 M255DX

RX 6400

Core Specs

Shading Units

320

768 +140.0%

Shaders

320

768 +140.0%

TMUs

20

48 +140.0%

ROPs

8

32 +300.0%

Compute Units

5

12 +140.0%

Clocks

Base Clock

780 MHz

1923 MHz

Boost Clock

855 MHz

2321 MHz

Game Clock

—

2039 MHz

Memory Clock

System Shared

2000 MHz 16 Gbps effective

Memory

Memory Size

System Shared

4 GB

VRAM (MB)

—

4,096

Memory Type

System Shared

GDDR6

Memory Bus

System Shared

64 bit

Bandwidth

System Dependent

128.0 GB/s

Cache

L1 Cache

16 KB (per CU)

128 KB per Array

L2 Cache

128 KB

1024 KB

L3 Cache

—

16 MB

L0 Cache

—

32 KB per WGP

Performance

Pixel Rate

6.840 GPixel/s

74.27 GPixel/s

Texture Rate

17.10 GTexel/s

111.4 GTexel/s

FP32 (TFLOPS)

547.2 GFLOPS

3.565 TFLOPS

FP64 (TFLOPS)

34.20 GFLOPS (1:16)

222.8 GFLOPS (1:16)

FP16 (TFLOPS)

—

7.130 TFLOPS (2:1)

AI/RT

RT Cores

—

12

Power

TDP

—

53 W

TDP (W)

—

53

Suggested PSU

—

250 W

Power Connectors

—

None

Architecture

Architecture

GCN 1.0

RDNA 2.0

GPU Name

Jet

Navi 24

Generation

Gem System Hybrid (Rx M200)

Navi II (RX 6000)

Process Size

28 nm

6 nm

Transistors

690 million

5,400 million

Die Size

56 mm²

107 mm²

Foundry

TSMC

TSMC

Density

12.3M / mm²

50.5M / mm²

API Support

DirectX

12 (11_1)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.2.170

1.4

OpenCL

2.1 (1.2)

2.2

Shader Model

6.5 (5.1)

6.8

Physical

Slot Width

IGP

Single-slot

Outputs

Portable Device Dependent

1x HDMI 2.11x DisplayPort 1.4a

Bus Interface

IGP

PCIe 4.0 x4

Other

Launch Price

—

159 USD

Production

End-of-life

End-of-life

Predecessor

—

Navi

Successor

—

Navi III

View Radeon R6 M255DX Details View Radeon RX 6400 Details