Radeon HD 2600 XT and GeForce 8800 GTS 640 - video card comparison
Radeon HD 2600 XT
GeForce 8800 GTS 640
Architecture
TeraScale (2005−2013)
Tesla (2006−2010)
GPU code name
RV630
G80
Market segment
Desktop
Desktop
Release date
June 2007
November 2006
Interface
PCIe 1.0 x16
PCIe 1.0 x16
Supplementary power connectors
None
1x 6-pin
Core clock speed
800 MHz
513 MHz
Floating-point performance
192 gflops
228.1 gflops
Manufacturing process technology
65 nm
90 nm
Number of transistors
390 million
681 million
Pipelines / CUDA cores
120
96
Power consumption (TDP)
45 Watt
143 Watt
Texture fill rate
6.400
24.62
Memory type
GDDR3
GDDR3
Maximum RAM amount
256 MB
640 MB
Memory bus width
128 Bit
320 Bit
Memory clock speed
1400 MHz
1584 MHz
Memory bandwidth
22.4 GB/s
63.36 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
10.0 (10_0)
11.1 (10_0)
CUDA
-
+
OpenCL
N/A
1.1
OpenGL
3.3
3.3
Shader Model
4.0
4.0
Vulkan
N/A
N/A