Ellesmere and GeForce GT 640M Mac Edition - video card comparison
Ellesmere
GeForce GT 640M Mac Edition
Architecture
GCN 4.0 (2016−2020)
Kepler (2012−2018)
GPU code name
Ellesmere
GK107
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
14 nm
28 nm
Number of transistors
5,700 million
1,270 million
Pipelines / CUDA cores
2304
384
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 (12_0)
12 (11_0)
CUDA
-
3.0
OpenCL
2.1
1.2
OpenGL
4.6
4.6
Shader Model
6.7
5.1
Vulkan
1.3
1.1.126