NVIDIA GeForce RTX 4090 Max-Q vs AMD Radeon Pro Vega 20

VS

NVIDIA GeForce RTX 4090 Max-Q

AMD Radeon Pro Vega 20

We compared two Mobile platform GPUs: 16GB VRAM GeForce RTX 4090 Max Q and 4GB VRAM Radeon Pro Vega 20 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090 Max-Q 's Advantages

Released 4 years and 2 months late

Boost Clock has increased by 13% (1455MHz vs 1283MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (448.0GB/s vs 189.4GB/s)

8448 additional rendering cores

Lower TDP (80W vs 100W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090 Max Q +762%

28.31 TFLOPS

Radeon Pro Vega 20

3.284 TFLOPS

GeForce RTX 4090 Max Q

VS

Radeon Pro Vega 20

Graphics Card

Jan 2023

Release Date

Nov 2018

GeForce 40 Mobile

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

930 MHz

Base Clock

815 MHz

1455 MHz

Boost Clock

1283 MHz

1750 MHz

Memory Clock

740 MHz

Memory

16GB

Memory Size

4GB

GDDR6

Memory Type

HBM2

256bit

Memory Bus

1024bit

448.0GB/s

Bandwidth

189.4GB/s

Render Config

-

Compute Units

20

76

SM Count

-

9728

Shading Units

1280

304

TMUs

80

112

ROPs

32

304

Tensor Cores

-

76

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

64 MB

L2 Cache

1024 KB

-

Theoretical Performance

163.0 GPixel/s

Pixel Rate

41.06 GPixel/s

442.3 GTexel/s

Texture Rate

102.6 GTexel/s

28.31 TFLOPS

FP16 (half)

6.569 TFLOPS

28.31 TFLOPS

FP32 (float)

3.284 TFLOPS

442.3 GFLOPS

FP64 (double)

205.3 GFLOPS

Board Design

80W

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

AD103

GPU Name

Vega 12

GN21-X11

GPU Variant

Vega 12 XTA

Ada Lovelace

Architecture

GCN 5.0

TSMC

Foundry

GlobalFoundries

4 nm

Process Size

14 nm

45.9 billion

Transistors

Unknown

379 mm²

Die Size

Unknown

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_1)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.3

Vulkan

1.2

8.9

CUDA

-

6.7

Shader Model

6.3

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