AMD Radeon R9 M390X vs AMD Radeon R9 M385X

VS

AMD Radeon R9 M390X

AMD Radeon R9 M385X

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M390X and 4GB VRAM Radeon R9 M385X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390X 's Advantages

Larger VRAM bandwidth (160.0GB/s vs 76.80GB/s)

1152 additional rendering cores

AMD Radeon R9 M385X 's Advantages

Boost Clock1100MHz

Score

Benchmark

FP32 (float)

Radeon R9 M390X +50%

2.961 TFLOPS

Radeon R9 M385X

1.971 TFLOPS

Radeon R9 M390X

VS

Radeon R9 M385X

Graphics Card

May 2015

Release Date

May 2015

Crystal System

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1000 MHz

-

Boost Clock

1100 MHz

1250 MHz

Memory Clock

1200 MHz

Memory

4GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

160.0GB/s

Bandwidth

76.80GB/s

Render Config

32

Compute Units

14

-

2048

Shading Units

896

128

TMUs

56

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

23.14 GPixel/s

Pixel Rate

17.60 GPixel/s

92.54 GTexel/s

Texture Rate

61.60 GTexel/s

2.961 TFLOPS

FP16 (half)

-

2.961 TFLOPS

FP32 (float)

1.971 TFLOPS

185.1 GFLOPS

FP64 (double)

123.2 GFLOPS

Board Design

75W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Amethyst

GPU Name

Strato

Amethyst XT

GPU Variant

Strato XT

GCN 3.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

2.08 billion

366 mm²

Die Size

160 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.1

1.2

Vulkan

1.2.170

-

6.3

Shader Model

6.5

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