Radeon HD 4870 and GeForce GTX 775M Mac Edition - video card comparison

Radeon HD 4870

GeForce GTX 775M Mac Edition

Architecture

TeraScale (2005−2013)

Kepler (2012−2018)

GPU code name

RV770

GK104

Market segment

Desktop

Release date

June 2008

November 2013

Interface

PCIe 2.0 x16

MXM-B (3.0)

Supplementary power connectors

2x 6-pin

Core clock speed

750 MHz

797 MHz

Floating-point performance

1,200.0 gflops

2,142 gflops

Manufacturing process technology

55 nm

28 nm

Number of transistors

956 million

3,540 million

Pipelines / CUDA cores

800

1344

Power consumption (TDP)

150 Watt

100 Watt

Texture fill rate

30.00

89.26

Memory type

GDDR5

Maximum RAM amount

1 GB

2 GB

Memory bus width

256 Bit

Memory clock speed

3600 MHz

5000 MHz

Memory bandwidth

115.2 GB/s

160.0 GB/s

Display Connectors

2x DVI, 1x S-Video

No outputs

DirectX

10.1 (10_1)

12 (11_0)

CUDA

3.0

OpenCL

1.1

1.2

OpenGL

3.3

4.6

Shader Model

4.1

5.1

Vulkan

N/A

1.1.126