AMD Radeon R9 M290X Mac Edition vs AMD Radeon R5 M255

VS

AMD Radeon R9 M290X Mac Edition AMD Radeon R5 M255

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M290X 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 M290X Mac Edition 's Advantages

Boost Clock has increased by 4% (975MHz vs 940MHz)

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

640 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M290X Mac Edition +176%

1.997 TFLOPS

Radeon R5 M255

0.721 TFLOPS

Radeon R9 M290X Mac Edition

VS

Radeon R5 M255

Graphics Card

Nov 2014

Release Date

Oct 2014

Crystal System

Generation

Gem System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

850 MHz

Base Clock

925 MHz

975 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

-

SM Count

-

16

Compute Units

6

1024

Shading Units

384

64

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

31.20 GPixel/s

Pixel Rate

7.520 GPixel/s

62.40 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

721.9 GFLOPS

1.997 TFLOPS

FP32 (float)

721.9 GFLOPS

124.8 GFLOPS

FP64 (double)

45.12 GFLOPS

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

Board Design

80W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

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

-

CUDA

-

5.1

Shader Model

6.5

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