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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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Significantly higher clock speed 800 MHz vs 600 MHz Around 35% higher clock speed
Significantly higher effective memory clock speed 4,000 MHz vs 800 MHz 5x higher effective memory clock speed
More memory 1,024 MB vs 512 MB 2x more memory
Higher memory bandwidth 64 GB/s vs 6.4 GB/s 10x higher memory bandwidth
Better floating-point performance 768 GFLOPS vs 96 GFLOPS 8x better floating-point performance
Significantly higher memory clock speed 1,000 MHz vs 400 MHz 2.5x higher memory clock speed
More shading units 480 vs 80 400 more shading units
More compute units 6 vs 1 5 more compute units
Slightly more render output processors 8 vs 4 Twice as many render output processors
Wider memory bus 128 bit vs 64 bit 2x wider memory bus
Front view of Radeon HD 4350 PCIe x1

Reasons to consider the
ATi Radeon HD 4350 PCIe x1

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Lower TDP 20W vs 66W 3.3x lower TDP

Features Key features of the Radeon HD 6670  vs 4350 PCIe x1 

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

Other than DDR4 memory, Skylake would also feature PCIe 4.0 functionality which doubles the bandwidth over PCIe 3.0 but it is known that no GPU currently takes benefit from the extra bandwidth available on PCIe 3.0 or even 2.0 so only if NVIDIA’s Maxwell requires massive bandwidth from the PCIe 4.0 slots would we see any real time performance benefit.
Radeon HD 4350 PCIe x1 | by hassan-mujtaba (Jul, 2013)

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

Radeon HD 6670
6.4 GPixel/s
Radeon HD 4350 PCIe x1
2.4 GPixel/s
All of the performance improvements found in the 12.11 Beta drivers are featured in the 13.1 driver suite.
Radeon HD 4350 PCIe x1 | by Niels-Broekhuijsen (Jan, 2013)

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

Radeon HD 6670
19.2 GTexel/s
Radeon HD 4350 PCIe x1
4.8 GTexel/s
In general AMD is able to either deliver the same performance at much better quality or better performance at the same quality as Ivy Bridge.
Radeon HD 4350 PCIe x1 | by Anand-Lal-Shimpi (Sep, 2012)

floating point performance How fast the gpu can crunch numbers

Radeon HD 6670
While Trinity is currently rated at 726 GFLOPS, the Kaveri APU due late in 2012 or early 2013, will have at least 1 TFLOPS of total compute performance.
Radeon HD 4350 PCIe x1 | by Ryan-Shrout (Jun, 2012)

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

The idea is that one can precompile functions in the shader before hand and ship the compiled code, while linking can be done at runtime.
Radeon HD 4350 PCIe x1 | by Rahul-Garg (Jul, 2013)

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
4350 PCIe x1 
GPU brand AMD ATi
GPU name Turks XT RV710
Market Desktop Desktop
Clock speed 800 MHz 600 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 2.4 GPixel/s
Texture rate 19.2 GTexel/s 4.8 GTexel/s
Floating-point performance 768 GFLOPS 96 GFLOPS


Radeon HD 6670  vs
4350 PCIe x1 
Memory clock speed 1,000 MHz 400 MHz
Effective memory clock speed 4,000 MHz 800 MHz
Memory bus 128 bit 64 bit
Memory 1,024 MB 512 MB
Memory type GDDR5 DDR2
Memory bandwidth 64 GB/s 6.4 GB/s

noise and power

TDP 66W 20W


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