Radeon HD 6770 and GeForce GTX 285 X2 - video card comparison

Radeon HD 6770

GeForce GTX 285 X2

Architecture

TeraScale 2 (2009−2015)

Tesla 2.0 (2007−2013)

GPU code name

Juniper

GT200B

Market segment

Desktop

Desktop

Release date

January 2011

June 2009

Bus support

PCIe 2.0 x16

-

Interface

PCIe 2.0 x16

PCIe 2.0 x16

Supplementary power connectors

1x 6-pin

2x 8-pin

Boost clock speed

900 MHz

-

Core clock speed

-

648 MHz

Floating-point performance

1,360.0 gflops

-

Manufacturing process technology

40 nm

55 nm

Number of transistors

1,040 million

1,400 million

Pipelines / CUDA cores

800

240

Power consumption (TDP)

108 Watt

315 Watt

Texture fill rate

34.00

51.84

Memory type

GDDR5

GDDR3

Maximum RAM amount

1 GB

2 GB

Memory bus width

128 Bit

512 Bit

Memory clock speed

1050 MHz

2.3 GB/s

Memory bandwidth

76.8 GB/s

147.5 GB/s

Display Connectors

2x DVI, 1x HDMI, 2x mini-DisplayPort

2x DVI, 1x HDMI

Eyefinity

1

-

HDMI

+

+

DisplayPort support

-

-

DirectX

DirectX® 11

11.1 (10_0)

CUDA

-

1.3

Mantle

-

-

OpenCL

1.2

1.1

OpenGL

4.4

3.3

Shader Model

5.0

4.0

Vulkan

-

N/A

AppAcceleration

-

-

CrossFire

1

-

Enduro

-

-

HD3D

-

-

PowerTune

-

-

TrueAudio

-

-

ZeroCore

-

-