GeForce GT 640 OEM and GeForce RTX 4080 - video card comparison
GeForce GT 640 OEM
GeForce RTX 4080
Architecture
Kepler (2012−2018)
Ada Lovelace
GPU code name
GK107
AD103-300-A1
Market segment
Desktop
Desktop
Release date
April 2012
September 2022
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
None
1x 16-pin
Boost clock speed
-
2505 MHz
Core clock speed
797 MHz
2205 MHz
Floating-point performance
612.1 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
1,270 million
45,900 million
Pipelines / CUDA cores
384
9728
Power consumption (TDP)
50 Watt
320 Watt
Texture fill rate
25.50
761.5
Memory type
DDR3
GDDR6X
Maximum RAM amount
2 GB
16 GB
Memory bus width
128 Bit
256 Bit
Memory clock speed
1782 MHz
22400 MHz
Memory bandwidth
28.51 GB/s
716.8 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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