GeForce GTX 775M Mac Edition and Radeon HD 4870 X2 - video card comparison
GeForce GTX 775M Mac Edition
Radeon HD 4870 X2
Architecture
Kepler (2012−2018)
TeraScale (2005−2013)
GPU code name
GK104
R700
Market segment
Desktop
Desktop
Release date
November 2013
August 2008
Interface
MXM-B (3.0)
PCIe 2.0 x16
Supplementary power connectors
-
1x 6-pin + 1x 8-pin
Core clock speed
797 MHz
700 MHz
Floating-point performance
2,142 gflops
2x 1,120.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
3,540 million
956 million
Pipelines / CUDA cores
1344
800
Power consumption (TDP)
100 Watt
286 Watt
Texture fill rate
89.26
28.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
5000 MHz
3600 MHz
Memory bandwidth
160.0 GB/s
115.2 GB/s
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (11_0)
10.1 (10_1)
CUDA
3.0
-
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A