GeForce 920M and GeForce GT 640M LE - video card comparison
Passmark - benchmark score GeForce 920M vs GeForce GT 640M LE
GeForce 920M
744
GeForce GT 640M LE
720
GeForce 920M
GeForce GT 640M LE
Architecture
Kepler (2012−2018)
Fermi / Kepler (2012)
GPU code name
N16V-GM-S
N13P-LP
Market segment
Laptop
Laptop
Release date
January 2015
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
Core clock speed
954 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
297.6 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)
33 Watt
20 Watt
Texture fill rate
30.53
Up to 16.0 billion/sec
Memory type
DDR3
DDR3\DDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
128bit
Memory clock speed
1800 MHz
1800 - 4000 MHz
Memory bandwidth
14.4 GB/s
Up to 28.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (11_0)
12 API
CUDA
+
+
OpenCL
1.2
1.1
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A
3D Blu-Ray
-
+
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
+