AMD Radeon RX 640 Mobile vs AMD Radeon RX 6500M

VS

AMD Radeon RX 640 Mobile

AMD Radeon RX 6500M

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 4GB VRAM Radeon RX 6500M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6500M 's Advantages

Released 2 years and 8 months late

Boost Clock has increased by 97% (2400MHz vs 1218MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (144.0GB/s vs 48.00GB/s)

384 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile

1.559 TFLOPS

Radeon RX 6500M +215%

4.915 TFLOPS

Radeon RX 640 Mobile

VS

Radeon RX 6500M

Graphics Card

May 2019

Release Date

Jan 2022

Mobility Radeon

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x4

Clock Speeds

1082 MHz

Base Clock

2000 MHz

1218 MHz

Boost Clock

2400 MHz

1500 MHz

Memory Clock

2250 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

64bit

Memory Bus

64bit

48.00GB/s

Bandwidth

144.0GB/s

Render Config

10

Compute Units

16

-

640

Shading Units

1024

40

TMUs

64

16

ROPs

32

-

RT Cores

16

16 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

1024 KB

-

L3 Cache

16 MB

Theoretical Performance

19.49 GPixel/s

Pixel Rate

76.80 GPixel/s

48.72 GTexel/s

Texture Rate

153.6 GTexel/s

1.559 TFLOPS

FP16 (half)

9.830 TFLOPS

1.559 TFLOPS

FP32 (float)

4.915 TFLOPS

97.44 GFLOPS

FP64 (double)

307.2 GFLOPS

Board Design

50W

TDP

50W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Polaris 23

GPU Name

Navi 24

Polaris 23 XT

GPU Variant

Navi 24 XM

GCN 4.0

Architecture

RDNA 2.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

6 nm

2.2 billion

Transistors

5.4 billion

103 mm²

Die Size

107 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.2

1.2

Vulkan

1.3

-

6.4

Shader Model

6.6

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