GeForce GT 640M and GeForce MX250 - video card comparison
Passmark - benchmark score GeForce GT 640M vs GeForce MX250
GeForce GT 640M
943
GeForce MX250
2495
GeForce GT 640M
GeForce MX250
Architecture
Kepler (2012−2018)
Pascal (2016−2021)
GPU code name
N13P-GS
N17S-G2
Market segment
Laptop
Laptop
Release date
March 2012
February 2019
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x4
Supplementary power connectors
-
None
Boost clock speed
645 MHz
1582 MHz
Core clock speed
Up to 625 MHz
1518 MHz
CUDA cores
384
-
Floating-point performance
480.0 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
1,270 million
1,800 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
32 Watt
10/25 Watt
Texture fill rate
Up to 20.0 billion/sec
24.91
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
128bit
64 Bit
Memory clock speed
1800 - 4000 MHz
7000 MHz
Memory bandwidth
Up to 64.0 GB/s
48.06 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (12_1)
CUDA
+
6.1
OpenCL
1.1
1.2
OpenGL
4.5
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.2
3D Blu-Ray
+
-
Optimus
+
-