GeForce GT 640M and GeForce 920M - video card comparison
Passmark - benchmark score GeForce GT 640M vs GeForce 920M
GeForce GT 640M
943
GeForce 920M
744
GeForce GT 640M
GeForce 920M
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
N13P-GS
N16V-GM-S
Market segment
Laptop
Laptop
Release date
March 2012
January 2015
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Boost clock speed
645 MHz
-
Core clock speed
Up to 625 MHz
954 MHz
CUDA cores
384
-
Floating-point performance
480.0 gflops
297.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
915 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
32 Watt
33 Watt
Texture fill rate
Up to 20.0 billion/sec
30.53
Memory type
DDR3\GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
128bit
64 Bit
Memory clock speed
1800 - 4000 MHz
1800 MHz
Memory bandwidth
Up to 64.0 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (11_0)
CUDA
+
+
OpenCL
1.1
1.2
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Blu-Ray
+
-
GameWorks
-
+
GPU Boost
-
2.0
Optimus
+
+