GeForce GTX 580 and GeForce GT 640M - video card comparison
Passmark - benchmark score GeForce GTX 580 vs GeForce GT 640M
GeForce GTX 580
4702
GeForce GT 640M
946
GeForce GTX 580
GeForce GT 640M
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
GF110
N13P-GS
Market segment
Desktop
Laptop
Release date
November 2010
March 2012
Bus support
PCI-E 2.0 x 16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
One 6-pin and One 8-pin
-
SLI options
+
-
Boost clock speed
-
645 MHz
Core clock speed
772 MHz
Up to 625 MHz
CUDA cores
512
384
Floating-point performance
1,581.1 gflops
480.0 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
3,000 million
1,270 million
Pipelines / CUDA cores
512
384
Power consumption (TDP)
244 Watt
32 Watt
Maximum GPU temperature
97 °C
-
Texture fill rate
49.4 billion/sec
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
1536 MB
2 GB
Memory bus width
384 Bit
128bit
Memory clock speed
2004 MHz (4008 data rate)
1800 - 4000 MHz
Memory bandwidth
192.4 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
Mini HDMITwo Dual Link DVI
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
+
1.1.126
3D Blu-Ray
-
+
Optimus
-
+