GeForce GT 440 and GeForce GT 640M Mac Edition - video card comparison
GeForce GT 440
GeForce GT 640M Mac Edition
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
GF108
GK107
Market segment
Desktop
Desktop
Release date
February 2011
February 2013
Bus support
PCI-E 2.0 x 16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
-
Core clock speed
810 MHz
745 MHz
CUDA cores
96
-
Floating-point performance
311.04 gflops
572.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
585 million
1,270 million
Pipelines / CUDA cores
96
384
Power consumption (TDP)
65 Watt
32 Watt
Maximum GPU temperature
98 °C
-
Texture fill rate
13.0 billion/sec
23.84
Memory type
DDR3
GDDR5
Maximum RAM amount
512 MB GDDR5 or 1 GB
512 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1600 MHz (GDDR5) or 900 MHz (DDR3)
5000 MHz
Memory bandwidth
28.8 (DDR3) – 51.2 (GDDR5)
40 GB/s
Standard memory config per GPU
1 GB GDDR5 or 2 GB
-
Display Connectors
HDMIVGADual Link DVI
No outputs
Multi monitor support
+
-
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