Radeon X1900 XTX and GeForce 8800 GTS 640 - video card comparison
Radeon X1900 XTX
GeForce 8800 GTS 640
Architecture
R500 (2005−2007)
Tesla (2006−2010)
GPU code name
R580
G80
Market segment
Desktop
Desktop
Release date
January 2006
November 2006
Interface
PCIe 1.0 x16
PCIe 1.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin
Core clock speed
650 MHz
513 MHz
Floating-point performance
-
228.1 gflops
Manufacturing process technology
90 nm
90 nm
Number of transistors
384 million
681 million
Pipelines / CUDA cores
-
96
Power consumption (TDP)
135 Watt
143 Watt
Texture fill rate
10.40
24.62
Memory type
GDDR3
GDDR3
Maximum RAM amount
512 MB
640 MB
Memory bus width
256 Bit
320 Bit
Memory clock speed
1550 MBps
1584 MHz
Memory bandwidth
49.6 GB/s
63.36 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
9.0c (9_3)
11.1 (10_0)
CUDA
-
+
OpenCL
N/A
1.1
OpenGL
2.1 (full)
Shader Model
3.04.0
Vulkan
N/A
N/A