GeForce GT 640M and UHD Graphics 770 - video card comparison
Passmark - benchmark score GeForce GT 640M vs UHD Graphics 770
GeForce GT 640M
943
UHD Graphics 770
2844
GeForce GT 640M
UHD Graphics 770
Architecture
Kepler (2012−2018)
Alder Lake
GPU code name
N13P-GS
Alder Lake xG
Market segment
Laptop
Desktop
Release date
March 2012
January 2022
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
Ring Bus
Boost clock speed
645 MHz
300 MHz
Core clock speed
Up to 625 MHz
-
CUDA cores
384
-
Floating-point performance
480.0 gflops
-
Manufacturing process technology
28 nm
10 nm
Number of transistors
1,270 million
-
Pipelines / CUDA cores
384
32
Power consumption (TDP)
32 Watt
15 Watt
Texture fill rate
Up to 20.0 billion/sec
26.40
Memory type
DDR3\GDDR5
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
128bit
System Shared
Memory clock speed
1800 - 4000 MHz
1550 MHz
Memory bandwidth
Up to 64.0 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
+
-
OpenCL
1.1
3.0
OpenGL
4.5
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.3
3D Blu-Ray
+
-
Optimus
+
-