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Differences What are the advantages of each

Front view of Radeon HD 6850

Reasons to consider the
AMD Radeon HD 6850

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Much higher effective memory clock speed 4,000 MHz vs 1,100 MHz Around 3.8x higher effective memory clock speed
Significantly higher clock speed 775 MHz vs 450 MHz More than 70% higher clock speed
Significantly higher memory bandwidth 128 GB/s vs 35.2 GB/s Around 3.8x higher memory bandwidth
Higher pixel rate 24.8 GPixel/s vs 7.2 GPixel/s Around 3.5x higher pixel rate
Slightly more memory 1,024 MB vs 256 MB 4x more memory
Higher texture rate 37.2 GTexel/s vs 7.2 GTexel/s Around 5.2x higher texture rate
More render output processors 32 vs 16 Twice as many render output processors
Significantly higher memory clock speed 1,000 MHz vs 550 MHz More than 80% higher memory clock speed
More texture mapping units 48 vs 16 Three times as many texture mapping units
Front view of GeForce 6800 Ultra Extreme

Reasons to consider the
Nvidia GeForce 6800 Ultra Extreme

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GPUBoss is not aware of any important advantages of the Nvidia GeForce 6800 Ultra Extreme vs the AMD Radeon HD 6850.

Features Key features of the Radeon HD 6850  vs GeForce 6800 Ultra Extreme 

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

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

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

Radeon HD 6850
24.8 GPixel/s

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

Radeon HD 6850
37.2 GTexel/s

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

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

Specifications Full list of technical specs

gpu

Radeon HD 6850  vs
GeForce 6800 Ultra Extreme 
GPU brand AMD Nvidia
GPU name Barts PRO NV40
Market Desktop Desktop
Clock speed 775 MHz 450 MHz
Is dual GPU No No
Reference card None None

raw performance

Texture mapping units 48 16
Render output processors 32 16
Pixel rate 24.8 GPixel/s 7.2 GPixel/s
Texture rate 37.2 GTexel/s 7.2 GTexel/s

memory

Radeon HD 6850  vs
GeForce 6800 Ultra Extreme 
Memory clock speed 1,000 MHz 550 MHz
Effective memory clock speed 4,000 MHz 1,100 MHz
Memory bus 256 bit 256 bit
Memory 1,024 MB 256 MB
Memory type GDDR5 GDDR3
Memory bandwidth 128 GB/s 35.2 GB/s

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