GeForce 6800 Ultra Extreme 

Released July, 2004
  • 450 MHz
  • 256 MB GDDR3

Features Key features of the GeForce 6800 Ultra Extreme

effective memory clock speed Frequency at which memory can be read from and written to

GeForce 6800 Ultra Extreme
1,100 MHz
Radeon R9 270
5,600 MHz
GeForce GTS 250
2,300 MHz

memory bandwidth Rate at which data can be read from or stored in onboard memory

GeForce 6800 Ultra Extreme
35.2 GB/s
Radeon R9 270
179.2 GB/s
GeForce GTS 250
73.6 GB/s

pixel rate Number of pixels a graphics card can render to the screen every second

GeForce 6800 Ultra Extreme
7.2 GPixel/s
Radeon R9 270
29.6 GPixel/s
GeForce GTS 250
12 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

GeForce 6800 Ultra Extreme
7.2 GTexel/s
Radeon R9 270
74 GTexel/s
GeForce GTS 250
48 GTexel/s

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

GeForce 6800 Ultra Extreme

render output processors GPU commponents responsible for transform pixels as they flow between memory buffers

GeForce 6800 Ultra Extreme

Specifications Full list of technical specs


GPU brand Nvidia
GPU name NV40
Market Desktop
Clock speed 450 MHz
Is dual GPU No
Reference card None

raw performance

Texture mapping units 16
Render output processors 16
Pixel rate 7.2 GPixel/s
Texture rate 7.2 GTexel/s


Memory clock speed 550 MHz
Effective memory clock speed 1,100 MHz
Memory bus 256 bit
Memory 256 MB
Memory type GDDR3
Memory bandwidth 35.2 GB/s
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