GeForce GT 740M and GeForce GT 640M LE - video card comparison
Passmark - benchmark score GeForce GT 740M vs GeForce GT 640M LE
GeForce GT 740M
816
GeForce GT 640M LE
720
GeForce GT 740M
GeForce GT 640M LE
Architecture
Kepler (2012−2018)
Fermi / Kepler (2012)
GPU code name
N14P-GV2, ...
N13P-LP
Market segment
Laptop
Laptop
Release date
March 2013
March 2012
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Boost clock speed
980 MHz
-
Core clock speed
810 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
752.6 gflops
384.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
915 million
585 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
45 Watt
20 Watt
Texture fill rate
31.36
Up to 16.0 billion/sec
Memory type
DDR3
DDR3\DDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
64/128 Bit
128bit
Memory clock speed
1600 - 1800 MHz
1800 - 4000 MHz
Memory bandwidth
14.4 GB/s
Up to 28.8 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
N/A
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
+
-