GeForce GT 645 OEM and GeForce 805A - video card comparison
GeForce GT 645 OEM
GeForce 805A
Architecture
Fermi 2.0 (2010−2014)
Kepler 2.0 (2013−2015)
GPU code name
GF114
GK208
Market segment
Desktop
Desktop
Release date
April 2012
July 2014
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Boost clock speed
-
758 MHz
Core clock speed
776 MHz
719 MHz
Floating-point performance
894.0 gflops
297.6 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,950 million
915 million
Pipelines / CUDA cores
288
192
Power consumption (TDP)
102 Watt
15 Watt
Texture fill rate
37.25
12.13
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
192 Bit
64 Bit
Memory clock speed
3828 MHz
2002 MHz
Memory bandwidth
91.87 GB/s
16.02 GB/s
Display Connectors
2x DVI, 1x mini-HDMI
No outputs
HDMI
+
-
DirectX
12 (11_0)
12 (11_0)
CUDA
2.1
3.5
OpenCL
1.1
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126