Radeon HD 3870 X2 and GeForce GT 545 OEM - video card comparison

Radeon HD 3870 X2

GeForce GT 545 OEM

Architecture

TeraScale (2005−2013)

Fermi 2.0 (2010−2014)

GPU code name

R680

GF116

Market segment

Desktop

Release date

January 2008

May 2011

Interface

PCIe 2.0 x16

Supplementary power connectors

1x 6-pin + 1x 8-pin

1x 6-pin

Core clock speed

825 MHz

871 MHz

Floating-point performance

2x 528.0 gflops

501.4 gflops

Manufacturing process technology

55 nm

40 nm

Number of transistors

666 million

1,170 million

Pipelines / CUDA cores

320

144

Power consumption (TDP)

165 Watt

105 Watt

Texture fill rate

13.20

20.90

Memory type

GDDR3

GDDR5

Maximum RAM amount

512 MB

1 GB

Memory bus width

256 Bit

128 Bit

Memory clock speed

1802 MHz

4000 MHz

Memory bandwidth

57.66 GB/s

64 GB/s

Display Connectors

2x DVI, 1x S-Video

2x DVI, 1x mini-HDMI

HDMI

DirectX

10.1 (10_1)

12 (11_0)

CUDA

2.1

OpenCL

N/A

1.1

OpenGL

3.3

4.6

Shader Model

4.1

5.1

Vulkan

N/A