GeForce GT 745A and Radeon HD 6770M Mac Edition - video card comparison
GeForce GT 745A
Radeon HD 6770M Mac Edition
Architecture
Kepler (2012−2018)
TeraScale 2 (2009−2015)
GPU code name
GK107
Whistler
Market segment
Desktop
Desktop
Release date
August 2013
January 2011
Interface
PCIe 3.0 x16
MXM-A (3.0)
Boost clock speed
915 MHz
-
Core clock speed
837 MHz
725 MHz
Floating-point performance
642.8 gflops
696.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
716 million
Pipelines / CUDA cores
384
480
Power consumption (TDP)
33 Watt
35 Watt
Texture fill rate
29.28
17.40
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1800 MHz
3600 MHz
Memory bandwidth
28.8 GB/s
57.6 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
11.2 (11_0)
CUDA
3.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.1.126
N/A