GeForce GT 640M Mac Edition and L20 - video card comparison
GeForce GT 640M Mac Edition
L20
Architecture
Kepler (2012−2018)
Ada Lovelace
GPU code name
GK107
AD102
Market segment
Desktop
Desktop
Release date
February 2013
November 2023
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
-
1x 16-pin
Boost clock speed
-
2520 MHz
Core clock speed
745 MHz
-
Floating-point performance
572.2 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
1,270 million
76,300 million
Pipelines / CUDA cores
384
11776
Power consumption (TDP)
32 Watt
275 Watt
Texture fill rate
23.84
927.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
512 MB
48 GB
Memory bus width
64 Bit
384 Bit
Memory clock speed
5000 MHz
18 GB/s
Memory bandwidth
40 GB/s
864.0 GB/s
Display Connectors
No outputs
4x DisplayPort 1.4a
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
3.0
8.9
OpenCL
1.2
3.0
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
1.1.126
1.3