AMD Radeon R9 M390X vs AMD Radeon HD 6650M

VS

AMD Radeon R9 M390X

AMD Radeon HD 6650M

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M390X and 1024MB VRAM Radeon HD 6650M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390X 's Advantages

Released 4 years and 4 months late

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 25.60GB/s)

1568 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M390X +414%

2.961 TFLOPS

Radeon HD 6650M

0.576 TFLOPS

Radeon R9 M390X

VS

Radeon HD 6650M

Graphics Card

May 2015

Release Date

Jan 2011

Crystal System

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

800 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

25.60GB/s

Render Config

32

Compute Units

6

-

2048

Shading Units

480

128

TMUs

24

32

ROPs

8

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

23.14 GPixel/s

Pixel Rate

4.800 GPixel/s

92.54 GTexel/s

Texture Rate

14.40 GTexel/s

2.961 TFLOPS

FP16 (half)

-

2.961 TFLOPS

FP32 (float)

576.0 GFLOPS

185.1 GFLOPS

FP64 (double)

-

Board Design

75W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Amethyst

GPU Name

Whistler

Amethyst XT

GPU Variant

Whistler LE (216-0810028)

GCN 3.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

5 billion

Transistors

0.716 billion

366 mm²

Die Size

118 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.0

OpenCL

1.2

Vulkan

N/A

-

6.3

Shader Model

5.0

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