AMD Radeon HD 6650M vs AMD Radeon HD 6970M Mac Edition

VS

AMD Radeon HD 6650M

AMD Radeon HD 6970M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6650M and 2GB VRAM Radeon HD 6970M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6970M Mac Edition 's Advantages

Released 7 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (115.2GB/s vs 25.60GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6650M

0.576 TFLOPS

Radeon HD 6970M Mac Edition +126%

1.306 TFLOPS

Radeon HD 6650M

VS

Radeon HD 6970M Mac Edition

Graphics Card

Jan 2011

Release Date

Aug 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

800 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

25.60GB/s

Bandwidth

115.2GB/s

Render Config

6

Compute Units

12

-

480

Shading Units

960

24

TMUs

48

8

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

21.76 GPixel/s

14.40 GTexel/s

Texture Rate

32.64 GTexel/s

-

576.0 GFLOPS

FP32 (float)

1306 GFLOPS

-

Board Design

Unknown

TDP

75W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Whistler

GPU Name

Blackcomb

Whistler LE (216-0810028)

GPU Variant

Blackcomb XT (216-0811000)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.716 billion

Transistors

1.7 billion

118 mm²

Die Size

212 mm²

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

5.0

Shader Model

5.0

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