GeForce 845M and GeForce GT 645M - video card comparison
Passmark - benchmark score GeForce 845M vs GeForce GT 645M
GeForce 845M
1570
GeForce GT 645M
957
GeForce 845M
GeForce GT 645M
Architecture
Maxwell (2014−2018)
Kepler (2012−2018)
GPU code name
GM108
N13P-GS
Market segment
Laptop
Laptop
Release date
March 2014
March 2012
Bus support
-
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
1071 MHz
Up to 710 MHz
CUDA cores
-
384
Floating-point performance
883.7 gflops
544.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,870 million
1,270 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
45 Watt
32 Watt
Texture fill rate
37.63
22.7 billion/sec
Memory type
DDR3, GDDR5
DDR3\GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
64/128 Bit
128bit
Memory clock speed
2000 - 5000 MHz
1800 MHz
Memory bandwidth
40.1 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
4.6
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Blu-Ray
-
+
Optimus
+
+