GeForce GT 645M and HD Graphics 4400 - video card comparison
Passmark - benchmark score GeForce GT 645M vs HD Graphics 4400
GeForce GT 645M
957
HD Graphics 4400
538
GeForce GT 645M
HD Graphics 4400
Architecture
Kepler (2012−2018)
Gen. 7.5 Haswell (2012−2013)
GPU code name
N13P-GS
Haswell GT2
Market segment
Laptop
Laptop
Release date
March 2012
June 2013
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Boost clock speed
-
1100 MHz
Core clock speed
Up to 710 MHz
200 MHz
CUDA cores
384
-
Floating-point performance
544.5 gflops
46 gflops
Manufacturing process technology
28 nm
22 nm
Number of transistors
1,270 million
392 million
Pipelines / CUDA cores
384
20
Power consumption (TDP)
32 Watt
20 Watt
Texture fill rate
22.7 billion/sec
22.00
Memory type
DDR3\GDDR5
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
128bit
64/128 Bit
Memory clock speed
1800 MHz
System Shared
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 (11_1)
CUDA
+
-
OpenCL
1.1
1.2
OpenGL
4.5
4.3
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.80
3D Blu-Ray
+
-
Optimus
+
-
Quick Sync
-
+