GeForce 8400 GS and Radeon HD 6970 X2 - video card comparison

GeForce 8400 GS

Radeon HD 6970 X2

Architecture

Tesla (2006−2010)

TeraScale 3 (2010−2013)

GPU code name

G86

Antilles

Market segment

Desktop

Release date

April 2007

Interface

PCIe 1.0 x16

PCIe 2.0 x16

Supplementary power connectors

None

3x 8-pin

SLI options

Core clock speed

459 MHz

880 MHz

Floating-point performance

29.376 gflops

Manufacturing process technology

80 nm

40 nm

Number of transistors

210 million

2,640 million

Pipelines / CUDA cores

1536

Power consumption (TDP)

40 Watt

375 Watt

Texture fill rate

3.6 billion/sec

84.48

Memory type

DDR2

GDDR5

Maximum RAM amount

256 MB

2 GB

Memory bus width

64 Bit

256 Bit

Memory clock speed

800 MHz

5.5 GB/s

Memory bandwidth

6.4 GB/s

176.0 GB/s

Standard memory config per GPU

256 MB

Display Connectors

1x DVI, 1x VGA, 1x S-Video

2x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2

HDMI

DirectX

11.1 (10_0)

11.2 (11_0)

CUDA

1.1

OpenCL

1.1

1.2

OpenGL

2.1

4.4

Shader Model

4.0

5.0

Vulkan

N/A