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Differences What are the advantages of each

Front view of Radeon HD 6670

Reasons to consider the
AMD Radeon HD 6670

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Higher effective memory clock speed 4,000 MHz vs 1,800 MHz Around 2.2x higher effective memory clock speed
Higher clock speed 800 MHz vs 720 MHz More than 10% higher clock speed
Higher memory bandwidth 64 GB/s vs 14.4 GB/s Around 4.5x higher memory bandwidth
More shading units 480 vs 80 400 more shading units
Slightly more compute units 6 vs 1 5 more compute units
Slightly higher memory clock speed 1,000 MHz vs 900 MHz More than 10% higher memory clock speed
Front view of Mobility Radeon HD 5145

Reasons to consider the
ATi Mobility Radeon HD 5145

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Lower TDP 15W vs 66W 4.4x lower TDP

Features Key features of the Radeon HD 6670  vs Mobility Radeon HD 5145 

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

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

Radeon HD 6670
6.4 GPixel/s
Mobility Radeon HD 5145
2.88 GPixel/s

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

Radeon HD 6670
19.2 GTexel/s
Mobility Radeon HD 5145
5.76 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6670

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


Radeon HD 6670  vs
Mobility Radeon HD 5145 
GPU name Turks XT M92
Market Desktop Laptop
Clock speed 800 MHz 720 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 480 80
Texture mapping units 24 8
Render output processors 8 4
Compute units 6 1
Pixel rate 6.4 GPixel/s 2.88 GPixel/s
Texture rate 19.2 GTexel/s 5.76 GTexel/s
Floating-point performance 768 GFLOPS 115.2 GFLOPS


Radeon HD 6670  vs
Mobility Radeon HD 5145 
Memory clock speed 1,000 MHz 900 MHz
Effective memory clock speed 4,000 MHz 1,800 MHz
Memory bus 128 bit 64 bit
Memory 1,024 MB 1,024 MB
Memory type GDDR5 GDDR3
Memory bandwidth 64 GB/s 14.4 GB/s

noise and power

TDP 66W 15W


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