AMD Radeon HD 6650M vs AMD Radeon RX 640 Mobile

VS

AMD Radeon HD 6650M

AMD Radeon RX 640 Mobile

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6650M and 2GB VRAM Radeon RX 640 Mobile 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 4 months late

Boost Clock1218MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (48.00GB/s vs 25.60GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6650M

0.576 TFLOPS

Radeon RX 640 Mobile +170%

1.559 TFLOPS

Radeon HD 6650M

VS

Radeon RX 640 Mobile

Graphics Card

Jan 2011

Release Date

May 2019

Vancouver

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1082 MHz

-

Boost Clock

1218 MHz

800 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

64bit

25.60GB/s

Bandwidth

48.00GB/s

Render Config

6

Compute Units

10

-

480

Shading Units

640

24

TMUs

40

8

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

19.49 GPixel/s

14.40 GTexel/s

Texture Rate

48.72 GTexel/s

-

FP16 (half)

1.559 TFLOPS

576.0 GFLOPS

FP32 (float)

1.559 TFLOPS

-

FP64 (double)

97.44 GFLOPS

Board Design

Unknown

TDP

50W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Whistler

GPU Name

Polaris 23

Whistler LE (216-0810028)

GPU Variant

Polaris 23 XT

TeraScale 2

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

0.716 billion

Transistors

2.2 billion

118 mm²

Die Size

103 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2

-

5.0

Shader Model

6.4

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