AMD Radeon RX 640 Mobile vs AMD Radeon HD 6450A

VS

AMD Radeon RX 640 Mobile

AMD Radeon HD 6450A

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 512MB VRAM Radeon HD 6450A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 640 Mobile 's Advantages

Released 8 years and 1 months late

Boost Clock1218MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (48.00GB/s vs 8.528GB/s)

480 additional rendering cores

AMD Radeon HD 6450A 's Advantages

Lower TDP (25W vs 50W)

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +679%

1.559 TFLOPS

Radeon HD 6450A

0.2 TFLOPS

Radeon RX 640 Mobile

VS

Radeon HD 6450A

Graphics Card

May 2019

Release Date

Apr 2011

Mobility Radeon

Generation

All-In-One

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-A (3.0)

Clock Speeds

1082 MHz

Base Clock

-

1218 MHz

Boost Clock

-

1500 MHz

Memory Clock

533 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

64bit

48.00GB/s

Bandwidth

8.528GB/s

Render Config

10

Compute Units

2

-

640

Shading Units

160

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

19.49 GPixel/s

Pixel Rate

2.500 GPixel/s

48.72 GTexel/s

Texture Rate

5.000 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

200.0 GFLOPS

97.44 GFLOPS

FP64 (double)

-

Board Design

50W

TDP

25W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Polaris 23

GPU Name

Caicos

Polaris 23 XT

GPU Variant

-

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

2.2 billion

Transistors

0.37 billion

103 mm²

Die Size

67 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

6.4

Shader Model

5.0

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