Radeon HD 7870 XT and Radeon HD 8490 OEM - video card comparison

Radeon HD 7870 XT

Radeon HD 8490 OEM

Architecture

GCN 1.0 (2012−2020)

TeraScale 2 (2009−2015)

GPU code name

Tahiti

Caicos

Market segment

Desktop

Release date

November 2012

July 2013

Interface

PCIe 3.0 x16

PCIe 2.0 x16

Supplementary power connectors

2x 6-pin

None

Boost clock speed

975 MHz

Core clock speed

925 MHz

875 MHz

Floating-point performance

2,995 gflops

280.0 gflops

Manufacturing process technology

28 nm

40 nm

Number of transistors

4,313 million

370 million

Pipelines / CUDA cores

1536

160

Power consumption (TDP)

185 Watt

35 Watt

Texture fill rate

93.60

7.000

Memory type

GDDR5

DDR3

Maximum RAM amount

2 GB

1 GB

Memory bus width

256 Bit

64 Bit

Memory clock speed

6000 MHz

1800 MHz

Memory bandwidth

192.0 GB/s

14.4 GB/s

Display Connectors

1x DVI, 1x HDMI, 2x mini-DisplayPort

1x DVI, 1x DisplayPort

HDMI

DirectX

12 (11_1)

11.2 (11_0)

OpenCL

1.2

OpenGL

4.6

4.4

Shader Model

5.1

5.0

Vulkan

1.2.131

N/A