AMD Radeon R9 M380 Mac Edition vs AMD Radeon HD 6990M Rebrand

VS

AMD Radeon R9 M380 Mac Edition

AMD Radeon HD 6990M Rebrand

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M380 Mac Edition and 1024MB VRAM Radeon HD 6990M Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M380 Mac Edition 's Advantages

Released 3 years and 10 months late

Boost Clock1021MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (100.4GB/s vs 70.40GB/s)

AMD Radeon HD 6990M Rebrand 's Advantages

32 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M380 Mac Edition +22%

1.568 TFLOPS

Radeon HD 6990M Rebrand

1.28 TFLOPS

Radeon R9 M380 Mac Edition

VS

Radeon HD 6990M Rebrand

Graphics Card

May 2015

Release Date

Jul 2011

Gem System

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

900 MHz

Base Clock

-

1021 MHz

Boost Clock

-

1568 MHz

Memory Clock

1100 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

100.4GB/s

Bandwidth

70.40GB/s

Render Config

12

Compute Units

14

-

768

Shading Units

800

48

TMUs

40

16

ROPs

16

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

16.34 GPixel/s

Pixel Rate

12.80 GPixel/s

49.01 GTexel/s

Texture Rate

32.00 GTexel/s

-

1.568 TFLOPS

FP32 (float)

1280 GFLOPS

98.02 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Strato

GPU Name

Broadway

Strato PRO

GPU Variant

Broadway XTX

GCN 2.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

2.08 billion

Transistors

1.04 billion

160 mm²

Die Size

166 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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