Radeon HD 6990 and GeForce GTX 490 - video card comparison

Radeon HD 6990

GeForce GTX 490

Architecture

TeraScale 3 (2010−2013)

Fermi (2010−2014)

GPU code name

Antilles

GF100

Market segment

Desktop

Release date

March 2011

Interface

PCIe 2.0 x16

Supplementary power connectors

2x 8-pin

Core clock speed

830 MHz

608 MHz

Floating-point performance

2x 2,549.8 gflops

Manufacturing process technology

40 nm

Number of transistors

2,640 million

3,100 million

Pipelines / CUDA cores

1536

480

Power consumption (TDP)

375 Watt

365 Watt

Texture fill rate

79.68

36.48

Memory type

GDDR5

Maximum RAM amount

2 GB

1536 MB

Memory bus width

256 Bit

384 Bit

Memory clock speed

5000 MHz

3.4 GB/s

Memory bandwidth

160.0 GB/s

164.0 GB/s

Display Connectors

1x DVI, 4x mini-DisplayPort

3x DVI, 1x mini-DisplayPort

DirectX

11.2 (11_0)

12 (11_0)

CUDA

2.0

OpenCL

1.2

1.1

OpenGL

4.4

4.6

Shader Model

5.0

5.1

Vulkan

N/A