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Differences What are the advantages of each

Front view of Radeon HD 7750

Reasons to consider the
AMD Radeon HD 7750

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Much higher effective memory clock speed 4,500 MHz vs 800 MHz Around 5.8x higher effective memory clock speed
Higher memory bandwidth 72 GB/s vs 25.6 GB/s More than 2.8x higher memory bandwidth
Higher clock speed 800 MHz vs 669 MHz Around 20% higher clock speed
Much higher memory clock speed 1,125 MHz vs 400 MHz More than 2.8x higher memory clock speed
Slightly higher texture rate 25.6 GTexel/s vs 10.7 GTexel/s Around 2.5x higher texture rate
More texture mapping units 32 vs 16 Twice as many texture mapping units
Slightly more shading units 512 vs 320 192 more shading units
Slightly more compute units 8 vs 4 Twice as many compute units
Slightly lower TDP 55W vs 75W More than 25% lower TDP
Front view of Radeon HD 3850

Reasons to consider the
ASUS Radeon HD 3850

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Wider memory bus 256 bit vs 128 bit 2x wider memory bus

Features Key features of the Radeon HD 7750  vs 3850 

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

Radeon HD 7750
72 GB/s
Radeon HD 3850
25.6 GB/s

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

Radeon HD 7750
12.8 GPixel/s
Radeon HD 3850
10.7 GPixel/s

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

Radeon HD 7750
25.6 GTexel/s
Radeon HD 3850
10.7 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7750
819.2 GFLOPS
Radeon HD 3850
428.16 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

Reviews Word on the street

Specifications Full list of technical specs

gpu

Radeon HD 7750  vs
3850 
GPU brand AMD ATI
GPU name Cape Verde PRO RV670 PRO
Market Desktop Desktop
Clock speed 800 MHz 669 MHz
Is dual GPU No No
Reference card None ATi Radeon HD 3850 668 MHz 512 MB

raw performance

Shading units 512 320
Texture mapping units 32 16
Render output processors 16 16
Compute units 8 4
Pixel rate 12.8 GPixel/s 10.7 GPixel/s
Texture rate 25.6 GTexel/s 10.7 GTexel/s
Floating-point performance 819.2 GFLOPS 428.16 GFLOPS

memory

Radeon HD 7750  vs
3850 
Memory clock speed 1,125 MHz 400 MHz
Effective memory clock speed 4,500 MHz 800 MHz
Memory bus 128 bit 256 bit
Memory 1,024 MB 512 MB
Memory type GDDR5 DDR2
Memory bandwidth 72 GB/s 25.6 GB/s

noise and power

TDP 55W 75W

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