Radeon HD 4890 and GeForce GTX 285 X2 - video card comparison

Radeon HD 4890

GeForce GTX 285 X2

Architecture

TeraScale (2005−2013)

Tesla 2.0 (2007−2013)

GPU code name

RV790

GT200B

Market segment

Desktop

Release date

April 2009

June 2009

Interface

PCIe 2.0 x16

Supplementary power connectors

2x 6-pin

2x 8-pin

Core clock speed

850 MHz

648 MHz

Floating-point performance

1,360.0 gflops

Manufacturing process technology

55 nm

Number of transistors

959 million

1,400 million

Pipelines / CUDA cores

800

240

Power consumption (TDP)

190 Watt

315 Watt

Texture fill rate

34.00

51.84

Memory type

GDDR5

GDDR3

Maximum RAM amount

1 GB

2 GB

Memory bus width

256 Bit

512 Bit

Memory clock speed

3900 MHz

2.3 GB/s

Memory bandwidth

124.8 GB/s

147.5 GB/s

Display Connectors

2x DVI, 1x S-Video

2x DVI, 1x HDMI

HDMI

DirectX

10.1 (10_1)

11.1 (10_0)

CUDA

1.3

OpenCL

1.1

OpenGL

3.3

Shader Model

4.1

4.0

Vulkan

N/A