AMD Radeon R5 M255 vs AMD Radeon RX 6600S

VS

AMD Radeon R5 M255

AMD Radeon RX 6600S

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 and 4GB VRAM Radeon RX 6600S to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600S 's Advantages

Released 7 years and 3 months late

Boost Clock has increased by 113% (2000MHz vs 940MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (224.0GB/s vs 32.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 M255

0.721 TFLOPS

Radeon RX 6600S +894%

7.168 TFLOPS

Radeon R5 M255

VS

Radeon RX 6600S

Graphics Card

Oct 2014

Release Date

Jan 2022

Gem System

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x8

Clock Speeds

925 MHz

Base Clock

1700 MHz

940 MHz

Boost Clock

2000 MHz

1000 MHz

Memory Clock

1750 MHz

Memory

2GB

Memory Size

4GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

128bit

32.00GB/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

128.0 GPixel/s

22.56 GTexel/s

Texture Rate

224.0 GTexel/s

721.9 GFLOPS

FP16 (half)

14.34 TFLOPS

721.9 GFLOPS

FP32 (float)

7.168 TFLOPS

45.12 GFLOPS

FP64 (double)

448.0 GFLOPS

Board Design

Unknown

TDP

80W

-

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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