AMD Radeon R5 M255 vs ATI Mobility Radeon HD 5670 Mac Edition

VS

AMD Radeon R5 M255

ATI Mobility Radeon HD 5670 Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 and 512MB VRAM Mobility Radeon HD 5670 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages

Released 4 years and 6 months late

Boost Clock940MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (32.00GB/s vs 25.44GB/s)

ATI Mobility Radeon HD 5670 Mac Edition 's Advantages

16 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 M255 +38%

0.721 TFLOPS

Mobility Radeon HD 5670 Mac Edition

0.52 TFLOPS

Radeon R5 M255

VS

Mobility Radeon HD 5670 Mac Edition

Graphics Card

Oct 2014

Release Date

Apr 2010

Gem System

Generation

Manhattan

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

925 MHz

Base Clock

-

940 MHz

Boost Clock

-

1000 MHz

Memory Clock

795 MHz

Memory

2GB

Memory Size

512MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

128bit

32.00GB/s

Bandwidth

25.44GB/s

Render Config

6

Compute Units

5

-

384

Shading Units

400

24

TMUs

20

8

ROPs

8

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.520 GPixel/s

Pixel Rate

5.200 GPixel/s

22.56 GTexel/s

Texture Rate

13.00 GTexel/s

721.9 GFLOPS

FP16 (half)

-

721.9 GFLOPS

FP32 (float)

520.0 GFLOPS

45.12 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

15W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Topaz

GPU Name

Madison

Topaz PRO (216-0858030)

GPU Variant

Madison XT (216-0772003)

GCN 3.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

1.55 billion

Transistors

0.627 billion

125 mm²

Die Size

104 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

1.2.170

Vulkan

N/A

-

6.5

Shader Model

5.0

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