AMD Radeon HD 6770M Mac Edition vs AMD Radeon R9 M395 Mac Edition

VS

AMD Radeon HD 6770M Mac Edition

AMD Radeon R9 M395 Mac Edition

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6770M Mac Edition and 2GB VRAM Radeon R9 M395 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6770M Mac Edition 's Advantages

Lower TDP (35W vs 250W)

AMD Radeon R9 M395 Mac Edition 's Advantages

Released 4 years and 4 months late

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (174.7GB/s vs 57.60GB/s)

1312 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6770M Mac Edition

0.696 TFLOPS

Radeon R9 M395 Mac Edition +329%

2.989 TFLOPS

Radeon HD 6770M Mac Edition

VS

Radeon R9 M395 Mac Edition

Graphics Card

Jan 2011

Release Date

May 2015

Vancouver

Generation

Crystal System

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

900 MHz

Memory Clock

1365 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

57.60GB/s

Bandwidth

174.7GB/s

Render Config

6

Compute Units

28

-

480

Shading Units

1792

24

TMUs

112

8

ROPs

32

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

5.800 GPixel/s

Pixel Rate

26.69 GPixel/s

17.40 GTexel/s

Texture Rate

93.41 GTexel/s

-

696.0 GFLOPS

FP32 (float)

2.989 TFLOPS

-

FP64 (double)

373.6 GFLOPS

Board Design

35W

TDP

250W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Whistler

GPU Name

Amethyst

Whistler XT (216-0810001)

GPU Variant

Amethyst PRO (216-0872004)

TeraScale 2

Architecture

GCN 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.716 billion

Transistors

5 billion

104 mm²

Die Size

366 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.0

N/A

Vulkan

1.2

-

5.0

Shader Model

6.3

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