GeForce GT 640 OEM Rebrand and GeForce RTX 5080 - video card comparison
GeForce GT 640 OEM Rebrand
GeForce RTX 5080
Architecture
Fermi 2.0 (2010−2014)
Blackwell 2.0
GPU code name
GF116
GB203
Market segment
Desktop
Desktop
Release date
April 2012
2025 (recently)
Interface
PCIe 2.0 x16
PCIe 5.0 x16
Supplementary power connectors
None
1x 16-pin
Boost clock speed
-
2520 MHz
Core clock speed
720 MHz
-
Floating-point performance
414.7 gflops
-
Manufacturing process technology
40 nm
0 nm
Number of transistors
1,170 million
-
Pipelines / CUDA cores
144
10752
Power consumption (TDP)
75 Watt
350 Watt
Texture fill rate
17.28
846.7
Memory type
DDR3
GDDR7
Maximum RAM amount
1536 MB
16 GB
Memory bus width
192 Bit
256 Bit
Memory clock speed
1600 MHz
5 GB/s
Memory bandwidth
38.4 GB/s
160.0 GB/s
Display Connectors
2x DVI, 1x mini-HDMI
1x HDMI 2.1, 3x DisplayPort 1.4a
HDMI
+
+
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
2.1
9.1
OpenCL
1.1
3.0
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
N/A
1.3