AMD Radeon R5 A255 vs AMD Radeon RX 6450M

VS

AMD Radeon R5 A255

AMD Radeon RX 6450M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 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 RX 6450M 's Advantages

Released 9 years late

Boost Clock has increased by 162% (2460MHz vs 940MHz)

More VRAM (4GB vs 1024GB)

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

384 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255

0.721 TFLOPS

Radeon RX 6450M +424%

3.779 TFLOPS

Radeon R5 A255

VS

Radeon RX 6450M

Graphics Card

Jan 2014

Release Date

Jan 2023

All-In-One

Generation

Navi Mobile

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x4

Clock Speeds

925 MHz

Base Clock

2000 MHz

940 MHz

Boost Clock

2460 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

-

384

Shading Units

768

24

TMUs

48

8

ROPs

32

-

RT Cores

12

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

1024 KB

-

L3 Cache

16 MB

Theoretical Performance

7.520 GPixel/s

Pixel Rate

78.72 GPixel/s

22.56 GTexel/s

Texture Rate

118.1 GTexel/s

-

FP16 (half)

7.557 TFLOPS

721.9 GFLOPS

FP32 (float)

3.779 TFLOPS

-

FP64 (double)

236.2 GFLOPS

Board Design

Unknown

TDP

50W

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

Topaz

GPU Name

Navi 24

Topaz PRO (216-0858030)

GPU Variant

Navi 24 XML

GCN 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

6 nm

1.55 billion

Transistors

5.4 billion

125 mm²

Die Size

107 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.2

1.2.170

Vulkan

1.3

-

6.5

Shader Model

6.7

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