GeForce GT 640 and GeForce GTX 260 - video card comparison
Passmark - benchmark score GeForce GT 640 vs GeForce GTX 260
GeForce GT 640
1209
GeForce GTX 260
1260
GeForce GT 640
GeForce GTX 260
Architecture
Kepler (2012−2018)
Tesla 2.0 (2007−2013)
GPU code name
GK107
GT200
Market segment
Desktop
Desktop
Release date
June 2012
June 2008
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
2x 6-pin
SLI options
-
+
Core clock speed
902 MHz
576 MHz
CUDA cores
-
192
Floating-point performance
692.7 gflops
476.9 gflops
Manufacturing process technology
28 nm
65 nm
Number of transistors
1,270 million
1,400 million
Pipelines / CUDA cores
384
192
Power consumption (TDP)
65 Watt
182 Watt
Maximum GPU temperature
-
105 °C
Texture fill rate
28.86
36.9 billion/sec
Memory type
DDR3
GDDR3
Maximum RAM amount
2 GB
896 MB
Memory bus width
128 Bit
448 Bit
Memory clock speed
1782 MHz
999 MHz
Memory bandwidth
28.51 GB/s
111.9 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
Dual Link DVIHDTV
Multi monitor support
-
+
HDMI
+
+
Maximum VGA resolution
-
2048x1536
Audio input for HDMI
-
S/PDIF
DirectX
12 (11_0)
11.1 (10_0)
CUDA
3.0
+
OpenCL
1.2
1.1
OpenGL
4.6
2.1
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A