AMD Radeon HD 6750M Mac Edition vs AMD Radeon R5 A255

VS

AMD Radeon HD 6750M Mac Edition

AMD Radeon R5 A255

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6750M Mac Edition and 1024MB VRAM Radeon R5 A255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6750M Mac Edition 's Advantages

96 additional rendering cores

AMD Radeon R5 A255 's Advantages

Released 2 years and 9 months late

Boost Clock940MHz

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 50.82GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 6750M Mac Edition

0.574 TFLOPS

Radeon R5 A255 +25%

0.721 TFLOPS

Radeon HD 6750M Mac Edition

VS

Radeon R5 A255

Graphics Card

Apr 2011

Release Date

Jan 2014

Vancouver

Generation

All-In-One

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

794 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

50.82GB/s

Bandwidth

64.00GB/s

Render Config

6

Compute Units

6

-

480

Shading Units

384

24

TMUs

24

8

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

4.784 GPixel/s

Pixel Rate

7.520 GPixel/s

14.35 GTexel/s

Texture Rate

22.56 GTexel/s

-

574.1 GFLOPS

FP32 (float)

721.9 GFLOPS

-

Board Design

35W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

Whistler

GPU Name

Topaz

Whistler PRO (216-0810005)

GPU Variant

Topaz PRO (216-0858030)

TeraScale 2

Architecture

GCN 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.716 billion

Transistors

1.55 billion

104 mm²

Die Size

125 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2.170

-

5.0

Shader Model

6.5

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