AMD Radeon HD 8950M vs AMD Radeon R9 M390X

VS

AMD Radeon HD 8950M

AMD Radeon R9 M390X

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8950M and 4GB VRAM Radeon R9 M390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390X 's Advantages

Released 2 years late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (160.0GB/s vs 88.00GB/s)

1280 additional rendering cores

Lower TDP (75W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 8950M

1.651 TFLOPS

Radeon R9 M390X +79%

2.961 TFLOPS

Radeon HD 8950M

VS

Radeon R9 M390X

Graphics Card

May 2013

Release Date

May 2015

Solar System

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1375 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

88.00GB/s

Bandwidth

160.0GB/s

Render Config

12

Compute Units

32

-

768

Shading Units

2048

48

TMUs

128

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

17.20 GPixel/s

Pixel Rate

23.14 GPixel/s

51.60 GTexel/s

Texture Rate

92.54 GTexel/s

-

FP16 (half)

2.961 TFLOPS

1.651 TFLOPS

FP32 (float)

2.961 TFLOPS

103.2 GFLOPS

FP64 (double)

185.1 GFLOPS

Board Design

100W

TDP

75W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Saturn

GPU Name

Amethyst

Saturn XT

GPU Variant

Amethyst XT

GCN 2.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

5 billion

160 mm²

Die Size

366 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.0

1.2

Vulkan

1.2

-

6.3

Shader Model

6.3

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