AMD Radeon R9 M390 Mac Edition vs AMD Radeon R5 M255

VS

AMD Radeon R9 M390 Mac Edition

AMD Radeon R5 M255

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 2GB VRAM Radeon R5 M255 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 7 months late

Larger VRAM bandwidth (174.7GB/s vs 32.00GB/s)

640 additional rendering cores

AMD Radeon R5 M255 's Advantages

Boost Clock940MHz

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition +172%

1.962 TFLOPS

Radeon R5 M255

0.721 TFLOPS

Radeon R9 M390 Mac Edition

VS

Radeon R5 M255

Graphics Card

May 2015

Release Date

Oct 2014

Crystal System

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

1365 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

174.7GB/s

Bandwidth

32.00GB/s

Render Config

16

Compute Units

6

-

1024

Shading Units

384

64

TMUs

24

32

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

30.66 GPixel/s

Pixel Rate

7.520 GPixel/s

61.31 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

721.9 GFLOPS

1.962 TFLOPS

FP32 (float)

721.9 GFLOPS

122.6 GFLOPS

FP64 (double)

45.12 GFLOPS

Board Design

80W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Pitcairn

GPU Name

Topaz

Pitcairn PRO (215-0828062)

GPU Variant

Topaz PRO (216-0858030)

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

1.55 billion

212 mm²

Die Size

125 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2.170

-

5.1

Shader Model

6.5

Related GPU Comparisons

1

AMD Radeon R9 M390 Mac Edition vs NVIDIA GeForce RTX 3050 Max-Q Refresh

2

AMD Radeon R9 M390 Mac Edition vs NVIDIA GeForce G103M

3

AMD Radeon R9 M390 Mac Edition vs AMD Radeon R9 M290X

4

AMD Radeon R9 M390 Mac Edition vs AMD Radeon R5 A330

5

AMD Radeon R9 M390 Mac Edition vs AMD Radeon R9 M470X

6

AMD Radeon R9 M390 Mac Edition vs NVIDIA GeForce 840M

7

AMD Radeon R9 M390 Mac Edition vs AMD Radeon R9 M280X

8

AMD Radeon R9 M390 Mac Edition vs AMD Radeon Pro 555

9

AMD Radeon R9 M390 Mac Edition vs NVIDIA GeForce GTX 675MX Mac Edition

10

AMD Radeon R9 M390 Mac Edition vs NVIDIA GeForce RTX 3050 Max-Q Refresh 6 GB

Related News

1

Intel Confirms Panther Lake Adopts 18A Process, ES0 Samples Already Sent to Customers

2

Complete Lineup of Core Ultra 200HX/H/U and Core 200H/U Revealed: 31 Models to Dazzle the Eyes

3

Amechi Unveils V1 Mini PC: Only 0.33L Volume with 150W Power Consumption

4

iPhone 17 Series Set for Major Design Overhaul: Camera Module Transformed into Sleek Strip

5

The Thinnest iPhone Ever! iPhone 17 Air Reportedly Enters Foxconn's NPI Stage

6

Apple Allegedly Cancels M4 Extreme, Originally Planned for Mac Pro with 64-Core CPU and 160-Core GPU

7

Cyberpunk 2077 Update 2.2: Intel Arrow Lake Gaming Performance Soars by 33%!

8

Intel Finally Achieves Frame Generation! 'F1 24' Becomes the First XeSS 2 Game

9

World's First! Intel Arc B580 Graphics Card Arrives Early

10

Linux Creator Criticizes AMD and Intel's x86 Microarchitecture: A Complete Disaster