GeForce 6800 Ultra and Radeon X1900 XT - video card comparison
GeForce 6800 Ultra
Radeon X1900 XT
Architecture
Curie (2003−2013)
R500 (2005−2007)
GPU code name
NV45
R580
Market segment
Desktop
Desktop
Release date
July 2004
January 2006
Interface
PCIe 1.0 x16
PCIe 1.0 x16
Supplementary power connectors
1x 6-pin
1x 6-pin
Core clock speed
425 MHz
625 MHz
Manufacturing process technology
130 nm
90 nm
Number of transistors
222 million
384 million
Power consumption (TDP)
81 Watt
100 Watt
Texture fill rate
6.800
10.00
Memory type
GDDR3
GDDR3
Maximum RAM amount
256 MB
256 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
1100 MHz
1450 MBps
Memory bandwidth
35.2 GB/s
46.4 GB/s
Display Connectors
2x DVI, 1x S-Video
2x DVI, 1x S-Video
DirectX
9.0c (9_3)
9.0c (9_3)
OpenCL
N/A
N/A
OpenGL
2.1
2.1 (full)
Shader Model3.03.0
Vulkan
N/A
N/A