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Differences What are the advantages of each

Front view of Radeon HD 6870 1600SP

Reasons to consider the
Sapphire Radeon HD 6870 1600SP

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Higher clock speed 900 MHz vs 700 MHz Around 30% higher clock speed
Higher memory bandwidth 134.4 GB/s vs 73.6 GB/s Around 85% higher memory bandwidth
Better floating-point performance 2,880 GFLOPS vs 1,008 GFLOPS More than 2.8x better floating-point performance
Higher texture rate 72 GTexel/s vs 25.2 GTexel/s More than 2.8x higher texture rate
Higher pixel rate 28.8 GPixel/s vs 11.2 GPixel/s More than 2.5x higher pixel rate
Significantly more shading units 1,600 vs 720 880 more shading units
More texture mapping units 80 vs 36 44 more texture mapping units
More render output processors 32 vs 16 Twice as many render output processors
More compute units 20 vs 9 11 more compute units
Wider memory bus 256 bit vs 128 bit 2x wider memory bus
Front view of Radeon HD 6750

Reasons to consider the
AMD Radeon HD 6750

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Higher effective memory clock speed 4,600 MHz vs 4,200 MHz Around 10% higher effective memory clock speed
Higher memory clock speed 1,150 MHz vs 1,050 MHz Around 10% higher memory clock speed
Significantly lower TDP 86W vs 175W 2x lower TDP

Features Key features of the Radeon HD 6870 1600SP  vs 6750 

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

Radeon HD 6750
73.6 GB/s

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

Radeon HD 6870 1600SP
28.8 GPixel/s
Radeon HD 6750
11.2 GPixel/s

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

Radeon HD 6870 1600SP
72 GTexel/s
Radeon HD 6750
25.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6870 1600SP
2,880 GFLOPS
Radeon HD 6750
1,008 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 6870 1600SP  vs
6750 
GPU brand AMD AMD
GPU name Cypress Juniper PRO
Market Desktop Desktop
Clock speed 900 MHz 700 MHz
Is dual GPU No No
Reference card AMD Radeon HD 6870 1600SP Edition 850 MHz 1 GB None

raw performance

Shading units 1,600 720
Texture mapping units 80 36
Render output processors 32 16
Compute units 20 9
Pixel rate 28.8 GPixel/s 11.2 GPixel/s
Texture rate 72 GTexel/s 25.2 GTexel/s
Floating-point performance 2,880 GFLOPS 1,008 GFLOPS

memory

Radeon HD 6870 1600SP  vs
6750 
Memory clock speed 1,050 MHz 1,150 MHz
Effective memory clock speed 4,200 MHz 4,600 MHz
Memory bus 256 bit 128 bit
Memory 1,024 MB 1,024 MB
Memory type GDDR5 GDDR5
Memory bandwidth 134.4 GB/s 73.6 GB/s

noise and power

TDP 175W 86W

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