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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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Significantly higher clock speed 775 MHz vs 576 MHz Around 35% higher clock speed
Significantly higher effective memory clock speed 4,000 MHz vs 1,998 MHz More than 2x higher effective memory clock speed
More shading units 960 vs 480 Twice as many shading units
Significantly lower TDP 127W vs 289W 2.3x lower TDP
Front view of GeForce GTX 295

Reasons to consider the
EVGA GeForce GTX 295

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Higher memory bandwidth 223.8 GB/s vs 128 GB/s Around 75% higher memory bandwidth
Much wider memory bus 896 bit vs 256 bit 3.5x wider memory bus
More memory 1,792 MB vs 1,024 MB 75% more memory
Higher texture rate 92.2 GTexel/s vs 37.2 GTexel/s Around 2.5x higher texture rate
Significantly more texture mapping units 160 vs 48 112 more texture mapping units
More render output processors 56 vs 32 24 more render output processors
Higher pixel rate 32.2 GPixel/s vs 24.8 GPixel/s Around 30% higher pixel rate

Features Key features of the Radeon HD 6850  vs GeForce GTX 295 

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

Radeon HD 6850
128 GB/s
GeForce GTX 295
223.8 GB/s

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

Radeon HD 6850
24.8 GPixel/s
GeForce GTX 295
32.2 GPixel/s

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

Radeon HD 6850
37.2 GTexel/s
GeForce GTX 295
92.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6850
1,488 GFLOPS
GeForce GTX 295
1,192.4 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

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

Specifications Full list of technical specs

gpu

Radeon HD 6850  vs
GeForce GTX 295 
GPU brand AMD Nvidia
GPU name Barts PRO GT200 B3
Market Desktop Desktop
Clock speed 775 MHz 576 MHz
Is dual GPU No Yes
Reference card None Nvidia GeForce GTX 295 576 MHz 1.8 GB

raw performance

Shading units 960 480
Texture mapping units 48 160
Render output processors 32 56
Pixel rate 24.8 GPixel/s 32.2 GPixel/s
Texture rate 37.2 GTexel/s 92.2 GTexel/s
Floating-point performance 1,488 GFLOPS 1,192.4 GFLOPS

memory

Radeon HD 6850  vs
GeForce GTX 295 
Memory clock speed 1,000 MHz 999 MHz
Effective memory clock speed 4,000 MHz 1,998 MHz
Memory bus 256 bit 896 bit
Memory 1,024 MB 1,792 MB
Memory type GDDR5 GDDR3
Memory bandwidth 128 GB/s 223.8 GB/s

noise and power

TDP 127W 289W

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