GeForce GTX 550 Ti and GeForce GT 645M - video card comparison
Passmark - benchmark score GeForce GTX 550 Ti vs GeForce GT 645M
GeForce GTX 550 Ti
1599
GeForce GT 645M
957
GeForce GTX 550 Ti
GeForce GT 645M
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
GF116
N13P-GS
Market segment
Desktop
Laptop
Release date
March 2011
March 2012
Bus support
16x PCI-E 2.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
One 6-pin
-
SLI options
+
-
Core clock speed
900 MHz
Up to 710 MHz
CUDA cores
192
384
Floating-point performance
691.2 gflops
544.5 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,170 million
1,270 million
Pipelines / CUDA cores
192
384
Power consumption (TDP)
116 Watt
32 Watt
Maximum GPU temperature
100 °C
-
Texture fill rate
28.8 billion/sec
22.7 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
192 Bit
128bit
Memory clock speed
4.1 GB/s
1800 MHz
Memory bandwidth
98.4 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
Two Dual Link DVI-IMini HDMI
No outputs
Multi monitor support
+
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
2048x1536
Up to 2048x1536
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 API
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.2
4.5
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126
3D Blu-Ray
-
+
Optimus
-
+