GeForce GTS 450 and GeForce GT 640M Mac Edition - video card comparison
GeForce GTS 450
GeForce GT 640M Mac Edition
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
GF106
GK107
Market segment
Desktop
Desktop
Release date
September 2010
February 2013
Bus support
PCI-E 2.0 x 16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
6-pin
-
SLI options
+
-
Core clock speed
783 MHz
745 MHz
CUDA cores
192
-
Floating-point performance
601.3 gflops
572.2 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)
106 Watt
32 Watt
Maximum GPU temperature
100 °C
-
Texture fill rate
25.1 billion/sec
23.84
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
512 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1804 (3608 data rate) MHz
5000 MHz
Memory bandwidth
57.7 GB/s
40 GB/s
Display Connectors
Mini HDMITwo Dual Link DVI
No outputs
HDMI
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
3.0
OpenCL
1.1
1.2
OpenGL
4.2
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126