Radeon HD 4890 and GeForce 805A - video card comparison

Radeon HD 4890

GeForce 805A

Architecture

TeraScale (2005−2013)

Kepler 2.0 (2013−2015)

GPU code name

RV790

GK208

Market segment

Desktop

Desktop

Release date

April 2009

July 2014

Interface

PCIe 2.0 x16

PCIe 3.0 x8

Supplementary power connectors

2x 6-pin

-

Boost clock speed

-

758 MHz

Core clock speed

850 MHz

719 MHz

Floating-point performance

1,360.0 gflops

297.6 gflops

Manufacturing process technology

55 nm

28 nm

Number of transistors

959 million

915 million

Pipelines / CUDA cores

800

192

Power consumption (TDP)

190 Watt

15 Watt

Texture fill rate

34.00

12.13

Memory type

GDDR5

DDR3

Maximum RAM amount

1 GB

1 GB

Memory bus width

256 Bit

64 Bit

Memory clock speed

3900 MHz

2002 MHz

Memory bandwidth

124.8 GB/s

16.02 GB/s

Display Connectors

2x DVI, 1x S-Video

No outputs

DirectX

10.1 (10_1)

12 (11_0)

CUDA

-

3.5

OpenCL

1.1

1.2

OpenGL

3.3

4.6

Shader Model

4.1

5.1

Vulkan

N/A

1.1.126