GeForce 8400 GS and Radeon R5 A255 - video card comparison

GeForce 8400 GS

Radeon R5 A255

Architecture

Tesla (2006−2010)

GCN 3.0 (2014−2017)

GPU code name

G86

Topaz

Market segment

Desktop

Desktop

Release date

April 2007

2014

Interface

PCIe 1.0 x16

PCIe 3.0 x8

Supplementary power connectors

None

-

SLI options

+

-

Boost clock speed

-

940 MHz

Core clock speed

459 MHz

925 MHz

Floating-point performance

29.376 gflops

-

Manufacturing process technology

80 nm

28 nm

Number of transistors

210 million

1,550 million

Pipelines / CUDA cores

16

384

Power consumption (TDP)

40 Watt

-

Texture fill rate

3.6 billion/sec

22.56

Memory type

DDR2

GDDR5

Maximum RAM amount

256 MB

1 GB

Memory bus width

64 Bit

128 Bit

Memory clock speed

800 MHz

4 GB/s

Memory bandwidth

6.4 GB/s

64 GB/s

Standard memory config per GPU

256 MB

-

Display Connectors

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

Portable Device Dependent

DirectX

11.1 (10_0)

12 (12_0)

CUDA

1.1

-

OpenCL

1.1

2.1

OpenGL

2.1

4.6

Shader Model

4.0

6.5

Vulkan

N/A

1.2.170