GeForce GT 640 OEM Rebrand and Weston - video card comparison
GeForce GT 640 OEM Rebrand
Weston
Architecture
Fermi 2.0 (2010−2014)
GCN 3.0 (2014−2017)
GPU code name
GF116
Weston
Market segment
Desktop
Desktop
Release date
April 2012
-
Interface
PCIe 2.0 x16
-
Supplementary power connectors
None
-
Core clock speed
720 MHz
-
Floating-point performance
414.7 gflops
-
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,170 million
1,550 million
Pipelines / CUDA cores
144
384
Power consumption (TDP)
75 Watt
-
Texture fill rate
17.28
-
Memory type
DDR3
-
Maximum RAM amount
1536 MB
-
Memory bus width
192 Bit
-
Memory clock speed
1600 MHz
-
Memory bandwidth
38.4 GB/s
-
Display Connectors
2x DVI, 1x mini-HDMI
-
HDMI
+
-
DirectX
12 (11_0)
12 (12_0)
CUDA
2.1
-
OpenCL
1.1
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
N/A
1.2.170