GeForce GT 720M and GeForce GTX 645 OEM - video card comparison
GeForce GT 720M
GeForce GTX 645 OEM
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
N14M-GE
GK106
Market segment
Laptop
Desktop
Release date
April 2013
April 2013
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x8
PCIe 3.0 x16
Supplementary power connectors
-
None
Boost clock speed
938 MHz
-
Core clock speed
625 MHz
824 MHz
Floating-point performance
240.0 gflops
949.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
915 million
2,540 million
Pipelines / CUDA cores
96
576
Power consumption (TDP)
33 Watt
65 Watt
Texture fill rate
12.13
39.55
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
1800 - 2000 MHz
4000 MHz
Memory bandwidth
12.8 GB/s
64 GB/s
Shared memory
-
-
Standard memory configuration
DDR3
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
eDP 1.2 signal support
Up to 2560x1600
-
LVDS signal support
Up to 1920x1200
-
VGA аnalog display support
Up to 2048x1536
-
DisplayPort Multimode (DP++) support
Up to 2560x1600
-
HDCP content protection
+
-
HDMI
+
+
7.1 channel HD audio on HDMI
+
-
DirectX
12 API
12 (11_0)
CUDA
+
3.0
OpenCL
1.1
1.2
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
Blu-Ray 3D Support
+
-
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-
TrueHD and DTS-HD audio bitstreaming
+
-