AMD Radeon RX 6600S vs AMD Radeon Pro 455

VS

AMD Radeon RX 6600S

AMD Radeon Pro 455

We compared two Mobile platform GPUs: 4GB VRAM Radeon RX 6600S and 2GB VRAM Radeon Pro 455 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600S 's Advantages

Released 5 years and 3 months late

Boost Clock2000MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (224.0GB/s vs 81.28GB/s)

1024 additional rendering cores

AMD Radeon Pro 455 's Advantages

Lower TDP (35W vs 80W)

Score

Benchmark

FP32 (float)

Radeon RX 6600S +445%

7.168 TFLOPS

Radeon Pro 455

1.313 TFLOPS

Radeon RX 6600S

VS

Radeon Pro 455

Graphics Card

Jan 2022

Release Date

Oct 2016

Mobility Radeon

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1700 MHz

Base Clock

-

2000 MHz

Boost Clock

-

1750 MHz

Memory Clock

1270 MHz

Memory

4GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

128bit

224.0GB/s

Bandwidth

81.28GB/s

Render Config

28

Compute Units

12

-

1792

Shading Units

768

112

TMUs

48

64

ROPs

16

-

28

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

1024 KB

32 MB

L3 Cache

-

Theoretical Performance

128.0 GPixel/s

Pixel Rate

13.68 GPixel/s

224.0 GTexel/s

Texture Rate

41.04 GTexel/s

14.34 TFLOPS

FP16 (half)

1313 GFLOPS

7.168 TFLOPS

FP32 (float)

1313 GFLOPS

448.0 GFLOPS

FP64 (double)

82.08 GFLOPS

Board Design

80W

TDP

35W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

Baffin

-

GPU Variant

Baffin PRO

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

11.06 billion

Transistors

3 billion

237 mm²

Die Size

123 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.3

Vulkan

1.2

-

6.5

Shader Model

6.4

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