AMD Radeon R9 M275X vs AMD Radeon R9 M395X Mac Edition

VS

AMD Radeon R9 M275X

AMD Radeon R9 M395X Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M275X and 4GB VRAM Radeon R9 M395X Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M275X 's Advantages

Boost Clock925MHz

AMD Radeon R9 M395X Mac Edition 's Advantages

Released 1 years and 4 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (174.7GB/s vs 72.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M275X

1.184 TFLOPS

Radeon R9 M395X Mac Edition +214%

3.723 TFLOPS

Radeon R9 M275X

VS

Radeon R9 M395X Mac Edition

Graphics Card

Jan 2014

Release Date

May 2015

Gem System

Generation

Crystal System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1125 MHz

Memory Clock

1365 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

72.00GB/s

Bandwidth

174.7GB/s

Render Config

10

Compute Units

32

-

640

Shading Units

2048

40

TMUs

128

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

14.80 GPixel/s

Pixel Rate

29.09 GPixel/s

37.00 GTexel/s

Texture Rate

116.4 GTexel/s

-

FP16 (half)

3.723 TFLOPS

1184 GFLOPS

FP32 (float)

3.723 TFLOPS

74.00 GFLOPS

FP64 (double)

232.7 GFLOPS

Board Design

Unknown

TDP

250W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Venus

GPU Name

Amethyst

Venus XTX (216-0846033)

GPU Variant

Amethyst XT

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

5 billion

123 mm²

Die Size

366 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.0

1.2.170

Vulkan

1.2

-

6.5 (5.1)

Shader Model

6.3

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