Radeon HD 8670M and Radeon R4 (Kaveri) - video card comparison

Radeon HD 8670M

Radeon R4 (Kaveri)

Architecture

GCN (2011−2017)

GCN 1.1 (2014)

GPU code name

Sun

Kaveri

Market segment

Laptop

Laptop

Release date

November 2012

June 2014

Interface

PCIe 3.0 x8

-

Boost clock speed

825 MHz

-

Core clock speed

775 MHz

533 MHz

Floating-point performance

633.6 gflops

-

Manufacturing process technology

28 nm

28 nm

Number of transistors

690 million

2410 Million

Pipelines / CUDA cores

384

192

Texture fill rate

19.50

-

Memory type

DDR3

-

Maximum RAM amount

2 GB

-

Memory bus width

64 Bit

64/128 Bit

Memory clock speed

2000 MHz

-

Memory bandwidth

16 GB/s

-

Shared memory

-

+

Display Connectors

No outputs

-

DirectX

12 (11_1)

12 (FL 12_0)

OpenCL

1.2

-

OpenGL

4.6

-

Shader Model

5.1

-

Vulkan

1.2.131

-