Radeon HD 7770M and Radeon HD 8770 OEM - video card comparison

Radeon HD 7770M

Radeon HD 8770 OEM

Architecture

GCN (2011−2017)

GCN 2.0 (2013−2017)

GPU code name

Chelsea XT

Bonaire

Market segment

Laptop

Desktop

Release date

April 2012

September 2013

Interface

PCIe 2.0 x16

PCIe 3.0 x16

Supplementary power connectors

1x 6-pin

Core clock speed

675 MHz

1050 MHz

Floating-point performance

691.2 gflops

1,882 gflops

Manufacturing process technology

28 nm

Number of transistors

1,500 million

2,080 million

Pipelines / CUDA cores

512

896

Power consumption (TDP)

32 Watt

85 Watt

Texture fill rate

21.60

58.80

Memory type

GDDR5

Maximum RAM amount

1 GB

Memory bus width

128 Bit

Memory clock speed

4000 MHz

6000 MHz

Memory bandwidth

64 GB/s

96 GB/s

Shared memory

Display Connectors

No outputs

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

HDMI

DirectX

12 (11_1)

12 (12_0)

OpenCL

1.2

2.0

OpenGL

4.6

Shader Model

5.1

6.3

Vulkan

1.2.131