Radeon HD 7790 and Radeon HD 7770M - video card comparison

Radeon HD 7790

Radeon HD 7770M

Architecture

GCN 2.0 (2013−2017)

GCN (2011−2017)

GPU code name

Bonaire

Chelsea XT

Market segment

Desktop

Laptop

Release date

March 2013

April 2012

Interface

PCIe 3.0 x16

PCIe 2.0 x16

Supplementary power connectors

1x 6-pin

Core clock speed

1000 MHz

675 MHz

Floating-point performance

1,792 gflops

691.2 gflops

Manufacturing process technology

28 nm

Number of transistors

2,080 million

1,500 million

Pipelines / CUDA cores

896

512

Power consumption (TDP)

85 Watt

32 Watt

Texture fill rate

56.00

21.60

Memory type

GDDR5

Maximum RAM amount

1 GB

Memory bus width

128 Bit

Memory clock speed

6000 MHz

4000 MHz

Memory bandwidth

96 GB/s

64 GB/s

Shared memory

Display Connectors

1x DVI, 1x HDMI, 2x mini-DisplayPort

No outputs

HDMI

DirectX

12 (12_0)

12 (11_1)

OpenCL

2.0

1.2

OpenGL

4.6

Shader Model

6.3

5.1

Vulkan

1.2.131