AMD Radeon R9 M390 Mac Edition vs AMD Radeon R9 M290X

VS

AMD Radeon R9 M390 Mac Edition AMD Radeon R9 M290X

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 4GB VRAM Radeon R9 M290X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390 Mac Edition 's Advantages

Released 1 years and 4 months late

Larger VRAM bandwidth (174.7GB/s vs 153.6GB/s)

Lower TDP (80W vs 100W)

AMD Radeon R9 M290X 's Advantages

Boost Clock900MHz

More VRAM (4GB vs 2GB)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition

1.962 TFLOPS

Radeon R9 M290X +17%

2.304 TFLOPS

Radeon R9 M390 Mac Edition

VS

Radeon R9 M290X

Graphics Card

May 2015

Release Date

Jan 2014

Crystal System

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

900 MHz

1365 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

174.7GB/s

Bandwidth

153.6GB/s

Render Config

-

SM Count

-

16

Compute Units

20

1024

Shading Units

1280

64

TMUs

80

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

30.66 GPixel/s

Pixel Rate

28.80 GPixel/s

61.31 GTexel/s

Texture Rate

72.00 GTexel/s

-

FP16 (half)

-

1.962 TFLOPS

FP32 (float)

2.304 TFLOPS

122.6 GFLOPS

FP64 (double)

144.0 GFLOPS

Graphics Processor

Pitcairn

GPU Name

Neptune

Pitcairn PRO (215-0828062)

GPU Variant

Neptune XT (216-0847000)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

2.8 billion

212 mm²

Die Size

212 mm²

Board Design

80W

TDP

100W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

5.1

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