GeForce 920A and GeForce GT 640M - video card comparison
Passmark - benchmark score GeForce 920A vs GeForce GT 640M
GeForce 920A
866
GeForce GT 640M
946
GeForce 920A
GeForce GT 640M
Architecture
Kepler 2.0 (2013−2015)
Kepler (2012−2018)
GPU code name
GK208B
N13P-GS
Market segment
Desktop
Laptop
Release date
March 2015
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Boost clock speed
-
645 MHz
Core clock speed
954 MHz
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
441.6 gflops
480.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
915 million
1,270 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
33 Watt
32 Watt
Texture fill rate
30.53
Up to 20.0 billion/sec
Memory type
DDR3
DDR3\GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
64 Bit
128bit
Memory clock speed
2002 MHz
1800 - 4000 MHz
Memory bandwidth
16.02 GB/s
Up to 64.0 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
3.5
+
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Blu-Ray
-
+
Optimus
-
+