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Differences What are the advantages of each

Front view of Radeon HD 4860

Reasons to consider the
Sapphire Radeon HD 4860

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Significantly higher memory bandwidth 96 GB/s vs 22.4 GB/s More than 4.2x higher memory bandwidth
Significantly higher effective memory clock speed 3,000 MHz vs 1,400 MHz Around 2.2x higher effective memory clock speed
More shading units 640 vs 144 496 more shading units
Wider memory bus 256 bit vs 128 bit 2x wider memory bus
Front view of GeForce GTS 450

Reasons to consider the
Nvidia GeForce GTS 450

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Higher clock speed 783 MHz vs 700 MHz More than 10% higher clock speed
Lower TDP 106W vs 130W Around 20% lower TDP

Features Key features of the Radeon HD 4860  vs GeForce GTS 450 

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

Radeon HD 4860
96 GB/s
GeForce GTS 450
22.4 GB/s

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

Radeon HD 4860
11.2 GPixel/s
GeForce GTS 450
4.7 GPixel/s

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

Radeon HD 4860
22.4 GTexel/s
GeForce GTS 450
18.79 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4860
896 GFLOPS
GeForce GTS 450
451 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 4860  vs
GeForce GTS 450 
GPU brand ATI Nvidia
GPU name RV790 GF116
Market Desktop Desktop
Clock speed 700 MHz 783 MHz
Is dual GPU No No
Reference card ATi Radeon HD 4860 700 MHz 512 MB None

raw performance

Shading units 640 144
Texture mapping units 32 24
Render output processors 16 16
Pixel rate 11.2 GPixel/s 4.7 GPixel/s
Texture rate 22.4 GTexel/s 18.79 GTexel/s
Floating-point performance 896 GFLOPS 451 GFLOPS

memory

Radeon HD 4860  vs
GeForce GTS 450 
Memory clock speed 750 MHz 700 MHz
Effective memory clock speed 3,000 MHz 1,400 MHz
Memory bus 256 bit 128 bit
Memory 1,024 MB 1,024 MB
Memory type GDDR5 DDR3
Memory bandwidth 96 GB/s 22.4 GB/s

noise and power

TDP 130W 106W

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