Radeon HD 7970M Crossfire and GeForce GTX 680MX - video card comparison

Radeon HD 7970M Crossfire

GeForce GTX 680MX

Architecture

GCN (2011−2017)

Kepler (2012−2018)

GPU code name

Wimbledon XT

-

Market segment

Laptop

Laptop

Release date

May 2012

October 2012

Bus support

-

PCI Express 3.0

SLI options

-

+

Core clock speed

850 MHz

720 MHz

CUDA cores

-

1536

Manufacturing process technology

28 nm

28 nm

Number of transistors

-

3540 Million

Pipelines / CUDA cores

2560

1536

Power consumption (TDP)

200 Watt

122 Watt

Texture fill rate

-

92.2 billion/sec

Memory type

GDDR5

GDDR5

Maximum RAM amount

-

2 GB

Memory bus width

2x 256 Bit

256 Bit

Memory clock speed

4800 MHz

2500 MHz

Memory bandwidth

-

160 GB/s

Shared memory

-

-

DirectX

11.1

12 API

CUDA

-

+

OpenCL

-

1.1

OpenGL

-

4.5

3D Vision

-

+

Optimus

-

+