AMD Radeon R9 M275X vs AMD Radeon Pro 555X

VS

AMD Radeon R9 M275X

AMD Radeon Pro 555X

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M275X and 4GB VRAM Radeon Pro 555X 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 Pro 555X 's Advantages

Released 4 years and 6 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (94.08GB/s vs 72.00GB/s)

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M275X

1.184 TFLOPS

Radeon Pro 555X +17%

1.393 TFLOPS

Radeon R9 M275X

VS

Radeon Pro 555X

Graphics Card

Jan 2014

Release Date

Jul 2018

Gem System

Generation

Radeon Pro Mac

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

900 MHz

Base Clock

-

925 MHz

Boost Clock

-

1125 MHz

Memory Clock

1470 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

72.00GB/s

Bandwidth

94.08GB/s

Render Config

10

Compute Units

12

-

640

Shading Units

768

40

TMUs

48

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

14.80 GPixel/s

Pixel Rate

14.51 GPixel/s

37.00 GTexel/s

Texture Rate

43.54 GTexel/s

-

FP16 (half)

1393 GFLOPS

1184 GFLOPS

FP32 (float)

1393 GFLOPS

74.00 GFLOPS

FP64 (double)

87.07 GFLOPS

Board Design

Unknown

TDP

75W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Venus

GPU Name

Polaris 21

Venus XTX (216-0846033)

GPU Variant

Polaris 21 PRO

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.5 billion

Transistors

3 billion

123 mm²

Die Size

123 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.1

1.2.170

Vulkan

1.2

-

6.5 (5.1)

Shader Model

6.4

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