NVIDIA GeForce RTX 4080 Max-Q vs AMD Radeon R9 M390X

VS

NVIDIA GeForce RTX 4080 Max-Q AMD Radeon R9 M390X

We compared two Mobile platform GPUs: 12GB VRAM GeForce RTX 4080 Max Q and 4GB VRAM Radeon R9 M390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4080 Max-Q 's Advantages

Released 7 years and 8 months late

Boost Clock1350MHz

More VRAM (12GB vs 4GB)

Larger VRAM bandwidth (336.0GB/s vs 160.0GB/s)

5376 additional rendering cores

Lower TDP (60W vs 75W)

Score

Benchmark

FP32 (float)

GeForce RTX 4080 Max Q +576%

20.04 TFLOPS

Radeon R9 M390X

2.961 TFLOPS

GeForce RTX 4080 Max Q

VS

Radeon R9 M390X

Graphics Card

Jan 2023

Release Date

May 2015

GeForce 40 Mobile

Generation

Crystal System

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

795 MHz

Base Clock

-

1350 MHz

Boost Clock

-

1750 MHz

Memory Clock

1250 MHz

Memory

12GB

Memory Size

4GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

256bit

336.0GB/s

Bandwidth

160.0GB/s

Render Config

58

SM Count

-

Compute Units

32

7424

Shading Units

2048

232

TMUs

128

80

ROPs

32

232

Tensor Cores

-

58

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

48 MB

L2 Cache

512 KB

Theoretical Performance

108.0 GPixel/s

Pixel Rate

23.14 GPixel/s

313.2 GTexel/s

Texture Rate

92.54 GTexel/s

20.04 TFLOPS

FP16 (half)

2.961 TFLOPS

20.04 TFLOPS

FP32 (float)

2.961 TFLOPS

313.2 GFLOPS

FP64 (double)

185.1 GFLOPS

Graphics Processor

AD104

GPU Name

Amethyst

GN21-X9

GPU Variant

Amethyst XT

Ada Lovelace

Architecture

GCN 3.0

TSMC

Foundry

TSMC

4 nm

Process Size

28 nm

35.8 billion

Transistors

5 billion

295 mm²

Die Size

366 mm²

Board Design

60W

TDP

75W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.3

Vulkan

1.2

8.9

CUDA

-

6.7

Shader Model

6.3

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