GeForce GT 640M Mac Edition and Cedar - video card comparison
GeForce GT 640M Mac Edition
Cedar
Architecture
Kepler (2012−2018)
TeraScale 2 (2009−2015)
GPU code name
GK107
Cedar
Market segment
Desktop
Desktop
Release date
February 2013
-
Interface
PCIe 3.0 x16
-
Core clock speed
745 MHz
-
Floating-point performance
572.2 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
292 million
Pipelines / CUDA cores
384
80
Power consumption (TDP)
32 Watt
-
Texture fill rate
23.84
-
Memory type
GDDR5
-
Maximum RAM amount
512 MB
-
Memory bus width
64 Bit
-
Memory clock speed
5000 MHz
-
Memory bandwidth
40 GB/s
-
Display Connectors
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