GeForce GT 640M Mac Edition and GeForce RTX 4090 - video card comparison
GeForce GT 640M Mac Edition
GeForce RTX 4090
Architecture
Kepler (2012−2018)
Ada Lovelace
GPU code name
GK107
AD102-300-A1
Market segment
Desktop
Desktop
Release date
February 2013
September 2022
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
2235 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
16384
Power consumption (TDP)
32 Watt
450 Watt
Texture fill rate
23.84
1,290
Memory type
GDDR5
GDDR6X
Maximum RAM amount
512 MB
24 GB
Memory bus width
64 Bit
384 Bit
Memory clock speed
5000 MHz
21000 MHz
Memory bandwidth
40 GB/s
1,008 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x HDMI 2.1, 3x DisplayPort 1.4a
HDMI
-
+
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
6.6
Vulkan
1.1.126
1.3