GeForce 830M and GeForce GT 645M - video card comparison
Passmark - benchmark score GeForce 830M vs GeForce GT 645M
GeForce 830M
1038
GeForce GT 645M
957
GeForce 830M
GeForce GT 645M
Architecture
Maxwell (2014−2018)
Kepler (2012−2018)
GPU code name
N15?
N13P-GS
Market segment
Laptop
Laptop
Release date
March 2014
March 2012
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Boost clock speed
1150 MHz
-
Core clock speed
1029 MHz
Up to 710 MHz
CUDA cores
-
384
Floating-point performance
588.8 gflops
544.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
1,270 million
Pipelines / CUDA cores
256
384
Power consumption (TDP)
33 Watt
32 Watt
Texture fill rate
18.40
22.7 billion/sec
Memory type
DDR3
DDR3\GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
64 Bit
128bit
Memory clock speed
1800 MHz
1800 MHz
Memory bandwidth
14.4 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
+
+
OpenCL
1.2
1.1
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
+
+