AMD Radeon R9 M390X vs AMD Radeon RX 6450M

VS

AMD Radeon R9 M390X

AMD Radeon RX 6450M

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M390X and 4GB VRAM Radeon RX 6450M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390X 's Advantages

Larger VRAM bandwidth (160.0GB/s vs 128.0GB/s)

1280 additional rendering cores

AMD Radeon RX 6450M 's Advantages

Released 7 years and 8 months late

Boost Clock2460MHz

Lower TDP (50W vs 75W)

Score

Benchmark

FP32 (float)

Radeon R9 M390X

2.961 TFLOPS

Radeon RX 6450M +27%

3.779 TFLOPS

Radeon R9 M390X

VS

Radeon RX 6450M

Graphics Card

May 2015

Release Date

Jan 2023

Crystal System

Generation

Navi Mobile

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x4

Clock Speeds

-

Base Clock

2000 MHz

-

Boost Clock

2460 MHz

1250 MHz

Memory Clock

2000 MHz

Memory

4GB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

64bit

160.0GB/s

Bandwidth

128.0GB/s

Render Config

32

Compute Units

12

-

2048

Shading Units

768

128

TMUs

48

32

ROPs

32

-

RT Cores

12

16 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

1024 KB

-

L3 Cache

16 MB

Theoretical Performance

23.14 GPixel/s

Pixel Rate

78.72 GPixel/s

92.54 GTexel/s

Texture Rate

118.1 GTexel/s

2.961 TFLOPS

FP16 (half)

7.557 TFLOPS

2.961 TFLOPS

FP32 (float)

3.779 TFLOPS

185.1 GFLOPS

FP64 (double)

236.2 GFLOPS

Board Design

75W

TDP

50W

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Amethyst

GPU Name

Navi 24

Amethyst XT

GPU Variant

Navi 24 XML

GCN 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

6 nm

5 billion

Transistors

5.4 billion

366 mm²

Die Size

107 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.0

OpenCL

2.2

1.2

Vulkan

1.3

-

6.3

Shader Model

6.7

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