AMD Radeon RX 640 Mobile vs AMD Radeon RX 6450M

VS

AMD Radeon RX 640 Mobile AMD Radeon RX 6450M

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 4GB VRAM Radeon RX 6450M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6450M 's Advantages

Released 3 years and 8 months late

Boost Clock has increased by 102% (2460MHz vs 1218MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (128.0GB/s vs 48.00GB/s)

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile

1.559 TFLOPS

Radeon RX 6450M +142%

3.779 TFLOPS

Radeon RX 640 Mobile

VS

Radeon RX 6450M

Graphics Card

May 2019

Release Date

Jan 2023

Mobility Radeon

Generation

Navi Mobile

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

2460 MHz

1500 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

64bit

Memory Bus

64bit

48.00GB/s

Bandwidth

128.0GB/s

Render Config

-

SM Count

-

10

Compute Units

12

640

Shading Units

768

40

TMUs

48

16

ROPs

32

-

Tensor Cores

-

RT Cores

12

16 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

1024 KB

Theoretical Performance

19.49 GPixel/s

Pixel Rate

78.72 GPixel/s

48.72 GTexel/s

Texture Rate

118.1 GTexel/s

1.559 TFLOPS

FP16 (half)

7.557 TFLOPS

1.559 TFLOPS

FP32 (float)

3.779 TFLOPS

97.44 GFLOPS

FP64 (double)

236.2 GFLOPS

Graphics Processor

Polaris 23

GPU Name

Navi 24

Polaris 23 XT

GPU Variant

Navi 24 XML

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

Board Design

50W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

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

-

CUDA

-

6.4

Shader Model

6.7

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