Radeon HD 4860 and Radeon HD 6790 - video card comparison

Radeon HD 4860

Radeon HD 6790

Architecture

TeraScale (2005−2013)

Terascale 2 (2009−2015)

GPU code name

RV790

Barts

Market segment

Desktop

Release date

September 2009

April 2011

Interface

PCIe 2.0 x16

Supplementary power connectors

2x 6-pin

Core clock speed

700 MHz

840 MHz

Floating-point performance

896.0 gflops

1,344.0 gflops

Manufacturing process technology

55 nm

40 nm

Number of transistors

959 million

1,700 million

Pipelines / CUDA cores

640

800

Power consumption (TDP)

130 Watt

150 Watt

Texture fill rate

22.40

33.60

Memory type

GDDR5

Maximum RAM amount

512 MB

1 GB

Memory bus width

256 Bit

Memory clock speed

3000 MHz

1050 MHz

Memory bandwidth

96 GB/s

134.4 GB/s

Display Connectors

2x DVI, 1x S-Video

2x DVI, 1x HDMI, 1x DisplayPort

HDMI

DirectX

10.1 (10_1)

11.2 (11_0)

OpenCL

1.1

1.2

OpenGL

3.3

4.4

Shader Model

4.1

5.0

Vulkan

N/A