AMD Radeon R5 A255 vs AMD Radeon RX 6600M

VS

AMD Radeon R5 A255

AMD Radeon RX 6600M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 8GB VRAM Radeon RX 6600M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600M 's Advantages

Released 7 years and 4 months late

Boost Clock has increased by 157% (2416MHz vs 940MHz)

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (224.0GB/s vs 64.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 A255

0.721 TFLOPS

Radeon RX 6600M +1100%

8.659 TFLOPS

Radeon R5 A255

VS

Radeon RX 6600M

Graphics Card

Jan 2014

Release Date

May 2021

All-In-One

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x8

Clock Speeds

925 MHz

Base Clock

2068 MHz

940 MHz

Boost Clock

2416 MHz

1000 MHz

Memory Clock

1750 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

224.0GB/s

Render Config

6

Compute Units

28

-

384

Shading Units

1792

24

TMUs

112

8

ROPs

64

-

RT Cores

28

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

2 MB

-

L3 Cache

32 MB

Theoretical Performance

7.520 GPixel/s

Pixel Rate

154.6 GPixel/s

22.56 GTexel/s

Texture Rate

270.6 GTexel/s

-

FP16 (half)

17.32 TFLOPS

721.9 GFLOPS

FP32 (float)

8.659 TFLOPS

-

FP64 (double)

541.2 GFLOPS

Board Design

Unknown

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Topaz

GPU Name

Navi 23

Topaz PRO (216-0858030)

GPU Variant

-

GCN 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

1.55 billion

Transistors

11.06 billion

125 mm²

Die Size

237 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2.170

Vulkan

1.3

-

6.5

Shader Model

6.5

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