GeForce GT 640M and GeForce GT 745M - video card comparison
Passmark - benchmark score GeForce GT 640M vs GeForce GT 745M
GeForce GT 640M
943
GeForce GT 745M
1125
GeForce GT 640M
GeForce GT 745M
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
N13P-GS
N14P-LP/GS
Market segment
Laptop
Laptop
Release date
March 2012
April 2013
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Boost clock speed
645 MHz
-
Core clock speed
Up to 625 MHz
837 MHz
CUDA cores
384
-
Floating-point performance
480.0 gflops
642.8 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
1,270 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
32 Watt
45 Watt
Texture fill rate
Up to 20.0 billion/sec
17.57
Memory type
DDR3\GDDR5
DDR3, GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
128bit
128 Bit
Memory clock speed
1800 - 4000 MHz
1800 MHz
Memory bandwidth
Up to 64.0 GB/s
64 GB/s
Shared memory
-
-
Standard memory configuration
-
DDR3/GDDR5
Display Connectors
No outputs
No outputs
eDP 1.2 signal support
-
Up to 3840x2160
LVDS signal support
-
Up to 1920x1200
VGA аnalog display support
-
Up to 2048x1536
DisplayPort Multimode (DP++) support
-
Up to 3840x2160
HDCP content protection
-
+
HDMI
+
+
7.1 channel HD audio on HDMI
-
+
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 API
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Blu-Ray
+
-
3D Vision / 3DTV Play
-
+
Blu-Ray 3D Support
-
+
H.264, VC1, MPEG2 1080p video decoder
-
+
Optimus
+
+
TrueHD and DTS-HD audio bitstreaming
-
+