AMD Radeon RX 7900M vs AMD Radeon RX 6600S

VS

We compared two Mobile platform GPUs: 16GB VRAM Radeon RX 7900M 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 7900M 's Advantages

Released 1 years and 9 months late

Boost Clock has increased by 4% (2090MHz vs 2000MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (576.0GB/s vs 224.0GB/s)

2816 additional rendering cores

AMD Radeon RX 6600S 's Advantages

Lower TDP (80W vs 180W)

Score

Benchmark

FP32 (float)

Radeon RX 7900M +437%

38.52 TFLOPS

Radeon RX 6600S

7.168 TFLOPS

Blender

Radeon RX 7900M +115%

2291

Radeon RX 6600S

1061

Radeon RX 7900M

VS

Radeon RX 6600S

Graphics Card

Oct 2023

Release Date

Jan 2022

Navi Mobile

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

1825 MHz

Base Clock

1700 MHz

2090 MHz

Boost Clock

2000 MHz

2250 MHz

Memory Clock

1750 MHz

Memory

16GB

Memory Size

4GB

GDDR6

Memory Type

GDDR6

256bit

Memory Bus

128bit

576.0GB/s

Bandwidth

224.0GB/s

Render Config

-

SM Count

-

72

Compute Units

28

4608

Shading Units

1792

288

TMUs

112

192

ROPs

64

-

Tensor Cores

-

72

RT Cores

28

256 KB per Array

L1 Cache

128 KB per Array

6 MB

L2 Cache

2 MB

Theoretical Performance

401.3 GPixel/s

Pixel Rate

128.0 GPixel/s

601.9 GTexel/s

Texture Rate

224.0 GTexel/s

77.05 TFLOPS

FP16 (half)

14.34 TFLOPS

38.52 TFLOPS

FP32 (float)

7.168 TFLOPS

1204 GFLOPS

FP64 (double)

448.0 GFLOPS

Graphics Processor

Navi 31

GPU Name

Navi 23

Navi 31

GPU Variant

-

RDNA 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

7 nm

57.7 billion

Transistors

11.06 billion

529 mm²

Die Size

237 mm²

Board Design

180W

TDP

80W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.2

OpenCL

2.1

1.3

Vulkan

1.3

-

CUDA

-

6.7

Shader Model

6.5

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