GeForce GTX 280 and GeForce GT 640 - video card comparison
Passmark - benchmark score GeForce GTX 280 vs GeForce GT 640
GeForce GTX 280
1338
GeForce GT 640
1209
GeForce GTX 280
GeForce GT 640
Architecture
Tesla 2.0 (2007−2013)
Kepler (2012−2018)
GPU code name
GT200
GK107
Market segment
Desktop
Desktop
Release date
June 2008
June 2012
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
6-pin & 8-pin
None
SLI options
+
-
Core clock speed
602 MHz
902 MHz
CUDA cores
240
-
Floating-point performance
622.1 gflops
692.7 gflops
Manufacturing process technology
65 nm
28 nm
Number of transistors
1,400 million
1,270 million
Pipelines / CUDA cores
240
384
Power consumption (TDP)
236 Watt
65 Watt
Maximum GPU temperature
105 °C
-
Texture fill rate
48.2 billion/sec
28.86
Memory type
GDDR3
DDR3
Maximum RAM amount
1 GB
2 GB
Memory bus width
512 Bit
128 Bit
Memory clock speed
1107 MHz
1782 MHz
Memory bandwidth
141.7 GB/s
28.51 GB/s
Display Connectors
HDTVDual Link DVI
1x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support
+
-
HDMI
-
+
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
S/PDIF
-
DirectX
11.1 (10_0)
12 (11_0)
CUDA
+
3.0
OpenCL
1.1
1.2
OpenGL
2.1
4.6
Shader Model
4.0
5.1
Vulkan
N/A
1.1.126