GeForce GTX 275 and GeForce 8800 GTS 640 - video card comparison
GeForce GTX 275
GeForce 8800 GTS 640
Architecture
Tesla 2.0 (2007−2013)
Tesla (2006−2010)
GPU code name
GT200B
G80
Market segment
Desktop
Desktop
Release date
January 2009
November 2006
Bus support
PCI-E 2.0
-
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
2x 6-pin
1x 6-pin
SLI options
+
-
Core clock speed
633 MHz
513 MHz
CUDA cores
240
-
Floating-point performance
673.9 gflops
228.1 gflops
Manufacturing process technology
55 nm
90 nm
Number of transistors
1,400 million
681 million
Pipelines / CUDA cores
240
96
Power consumption (TDP)
219 Watt
143 Watt
Maximum GPU temperature
105 °C
-
Texture fill rate
50.6 billion/sec
24.62
Memory type
GDDR3
GDDR3
Maximum RAM amount
896 MB
640 MB
Memory bus width
448 Bit
320 Bit
Memory clock speed
1134 MHz
1584 MHz
Memory bandwidth
127.0 GB/s
63.36 GB/s
Display Connectors
Two Dual Link DVI
2x DVI, 1x S-Video
Multi monitor support
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
S/PDIF
-
DirectX
11.1 (10_0)
11.1 (10_0)
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
3.0
3.3
Shader Model
4.0
4.0
Vulkan
N/A
N/A