Radeon HD 8490 OEM and GeForce GTX 645 OEM - video card comparison

Radeon HD 8490 OEM

GeForce GTX 645 OEM

Architecture

TeraScale 2 (2009−2015)

Kepler (2012−2018)

GPU code name

Caicos

GK106

Market segment

Desktop

Release date

July 2013

April 2013

Interface

PCIe 2.0 x16

PCIe 3.0 x16

Supplementary power connectors

None

Core clock speed

875 MHz

824 MHz

Floating-point performance

280.0 gflops

949.2 gflops

Manufacturing process technology

40 nm

28 nm

Number of transistors

370 million

2,540 million

Pipelines / CUDA cores

160

576

Power consumption (TDP)

35 Watt

65 Watt

Texture fill rate

7.000

39.55

Memory type

DDR3

GDDR5

Maximum RAM amount

1 GB

Memory bus width

64 Bit

128 Bit

Memory clock speed

1800 MHz

4000 MHz

Memory bandwidth

14.4 GB/s

64 GB/s

Display Connectors

1x DVI, 1x DisplayPort

1x DVI, 1x HDMI, 1x DisplayPort

HDMI

DirectX

11.2 (11_0)

12 (11_0)

CUDA

3.0

OpenCL

1.2

OpenGL

4.4

4.6

Shader Model

5.0

5.1

Vulkan

N/A

1.1.126