AMD Radeon RX 6600M vs NVIDIA GeForce RTX 4090 Max-Q

VS

AMD Radeon RX 6600M NVIDIA GeForce RTX 4090 Max-Q

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6600M and 16GB VRAM GeForce RTX 4090 Max Q to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600M 's Advantages

Boost Clock has increased by 66% (2416MHz vs 1455MHz)

NVIDIA GeForce RTX 4090 Max-Q 's Advantages

Released 1 years and 8 months late

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (448.0GB/s vs 224.0GB/s)

7936 additional rendering cores

Lower TDP (80W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 6600M

8.659 TFLOPS

GeForce RTX 4090 Max Q +226%

28.31 TFLOPS

Radeon RX 6600M

VS

GeForce RTX 4090 Max Q

Graphics Card

May 2021

Release Date

Jan 2023

Mobility Radeon

Generation

GeForce 40 Mobile

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

2068 MHz

Base Clock

930 MHz

2416 MHz

Boost Clock

1455 MHz

1750 MHz

Memory Clock

1750 MHz

Memory

8GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

128bit

Memory Bus

256bit

224.0GB/s

Bandwidth

448.0GB/s

Render Config

-

SM Count

76

28

Compute Units

-

1792

Shading Units

9728

112

TMUs

304

64

ROPs

112

-

Tensor Cores

304

28

RT Cores

76

128 KB per Array

L1 Cache

128 KB (per SM)

2 MB

L2 Cache

64 MB

Theoretical Performance

154.6 GPixel/s

Pixel Rate

163.0 GPixel/s

270.6 GTexel/s

Texture Rate

442.3 GTexel/s

17.32 TFLOPS

FP16 (half)

28.31 TFLOPS

8.659 TFLOPS

FP32 (float)

28.31 TFLOPS

541.2 GFLOPS

FP64 (double)

442.3 GFLOPS

Graphics Processor

Navi 23

GPU Name

AD103

-

GPU Variant

GN21-X11

RDNA 2.0

Architecture

Ada Lovelace

TSMC

Foundry

TSMC

7 nm

Process Size

4 nm

11.06 billion

Transistors

45.9 billion

237 mm²

Die Size

379 mm²

Board Design

100W

TDP

80W

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.3

-

CUDA

8.9

6.5

Shader Model

6.7

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