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Differences What are the advantages of each

Front view of Radeon R7 350

Reasons to consider the
AMD Radeon R7 350

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Much higher effective memory clock speed 4,500 MHz vs 1,802 MHz Around 2.5x higher effective memory clock speed
Higher clock speed 1,000 MHz vs 825 MHz More than 20% higher clock speed
Higher memory clock speed 1,125 MHz vs 901 MHz Around 25% higher memory clock speed
Significantly lower TDP 65W vs 165W 2.5x lower TDP
Front view of Radeon HD 3870 X2

Reasons to consider the
ATi Radeon HD 3870 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Higher memory bandwidth 115.32 GB/s vs 72 GB/s More than 60% higher memory bandwidth
Much wider memory bus 512 bit vs 128 bit 4x wider memory bus
Significantly more render output processors 32 vs 8 24 more render output processors
Higher pixel rate 26.4 GPixel/s vs 8.4 GPixel/s Around 3.2x higher pixel rate
More shading units 640 vs 384 256 more shading units

Benchmarks Real world tests of Radeon R7 350 vs HD 3870 X2

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon R7 350
3,358.42

Features Key features of the Radeon R7 350  vs HD 3870 X2 

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

Radeon R7 350
72 GB/s
Radeon HD 3870 X2
115.32 GB/s

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

Radeon R7 350
8.4 GPixel/s
Radeon HD 3870 X2
26.4 GPixel/s

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

Radeon R7 350
25.2 GTexel/s
Radeon HD 3870 X2
26.4 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R7 350
806.4 GFLOPS
Radeon HD 3870 X2
1,056 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

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