AMD Radeon RX 640 Mobile vs NVIDIA GeForce RTX 4080 Max-Q

VS

AMD Radeon RX 640 Mobile

NVIDIA GeForce RTX 4080 Max-Q

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 12GB VRAM GeForce RTX 4080 Max Q to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 640 Mobile 's Advantages

Lower TDP (50W vs 60W)

NVIDIA GeForce RTX 4080 Max-Q 's Advantages

Released 3 years and 8 months late

Boost Clock has increased by 11% (1350MHz vs 1218MHz)

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (336.0GB/s vs 48.00GB/s)

6784 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile

1.559 TFLOPS

GeForce RTX 4080 Max Q +1185%

20.04 TFLOPS

Radeon RX 640 Mobile

VS

GeForce RTX 4080 Max Q

Graphics Card

May 2019

Release Date

Jan 2023

Mobility Radeon

Generation

GeForce 40 Mobile

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

1082 MHz

Base Clock

795 MHz

1218 MHz

Boost Clock

1350 MHz

1500 MHz

Memory Clock

1750 MHz

Memory

2GB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

64bit

Memory Bus

192bit

48.00GB/s

Bandwidth

336.0GB/s

Render Config

10

Compute Units

-

SM Count

58

640

Shading Units

7424

40

TMUs

232

16

ROPs

80

-

Tensor Cores

232

-

RT Cores

58

16 KB (per CU)

L1 Cache

128 KB (per SM)

512 KB

L2 Cache

48 MB

-

Theoretical Performance

19.49 GPixel/s

Pixel Rate

108.0 GPixel/s

48.72 GTexel/s

Texture Rate

313.2 GTexel/s

1.559 TFLOPS

FP16 (half)

20.04 TFLOPS

1.559 TFLOPS

FP32 (float)

20.04 TFLOPS

97.44 GFLOPS

FP64 (double)

313.2 GFLOPS

Board Design

50W

TDP

60W

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Polaris 23

GPU Name

AD104

Polaris 23 XT

GPU Variant

GN21-X9

GCN 4.0

Architecture

Ada Lovelace

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

4 nm

2.2 billion

Transistors

35.8 billion

103 mm²

Die Size

295 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

8.9

6.4

Shader Model

6.7

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