GeForce 8400 GS and Radeon Sky 900 - video card comparison

GeForce 8400 GS

Radeon Sky 900

Architecture

Tesla (2006−2010)

GCN 1.0 (2012−2020)

GPU code name

G86

Tahiti

Market segment

Desktop

Desktop

Release date

April 2007

March 2013

Bus support

-

PCIe 3.0

Interface

PCIe 1.0 x16

PCIe 3.0 x16

Supplementary power connectors

None

2x 8-pin

SLI options

+

-

Boost clock speed

-

950 MHz

Core clock speed

459 MHz

825 MHz

Floating-point performance

29.376 gflops

2x 3,405 gflops

Manufacturing process technology

80 nm

28 nm

Number of transistors

210 million

4,313 million

Pipelines / CUDA cores

16

3584

Power consumption (TDP)

40 Watt

300 Watt

Texture fill rate

3.6 billion/sec

106.4

Memory type

DDR2

GDDR5

Maximum RAM amount

256 MB

6 GB

Memory bus width

64 Bit

384 Bit

Memory clock speed

800 MHz

5000 MHz

Memory bandwidth

6.4 GB/s

480 GB/s

Standard memory config per GPU

256 MB

-

Display Connectors

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

1x DVI, 1x mini-DisplayPort

Dual-link DVI support

-

1

DirectX

11.1 (10_0)

12 (11_1)

CUDA

1.1

-

OpenCL

1.1

1.2

OpenGL

2.1

4.6

Shader Model

4.0

5.1

Vulkan

N/A

1.2.131