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Differences What are the advantages of each

Front view of Radeon HD 7570

Reasons to consider the
Generic Radeon HD 7570

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More memory 1,024 MB vs 512 MB 2x more memory
Higher effective memory clock speed 1,600 MHz vs 1,000 MHz 60% higher effective memory clock speed
Better floating-point performance 624 GFLOPS vs 104 GFLOPS 6x better floating-point performance
Higher memory clock speed 800 MHz vs 500 MHz 60% higher memory clock speed
More shading units 480 vs 80 400 more shading 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
Slightly more compute units 6 vs 2 Three times as many compute units
Front view of Radeon HD 5450 PCIe x1

Reasons to consider the
ATi Radeon HD 5450 PCIe x1

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Lower TDP 19W vs 60W 3.2x lower TDP

Features Key features of the Radeon HD 7570  vs 5450 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 5450 PCIe x1 | by hassan-mujtaba (Jul, 2013)

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

Radeon HD 7570
5.2 GPixel/s
Radeon HD 5450 PCIe x1
2.6 GPixel/s
All of the performance improvements found in the 12.11 Beta drivers are featured in the 13.1 driver suite.
Radeon HD 5450 PCIe x1 | by Niels-Broekhuijsen (Jan, 2013)

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

Radeon HD 7570
15.6 GTexel/s
Radeon HD 5450 PCIe x1
5.2 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 5450 PCIe x1 | by Anand-Lal-Shimpi (Sep, 2012)

floating point performance How fast the gpu can crunch numbers

Radeon HD 7570
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 5450 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 5450 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 7570  vs
5450 PCIe x1 
GPU brand AMD ATi
GPU name Turks PRO Cedar
Market Desktop Desktop
Clock speed 650 MHz 650 MHz
Is dual GPU No No
Reference card AMD Radeon HD 7570 OEM 650 MHz 1 GB None

raw performance

Shading units 480 80
Texture mapping units 24 8
Render output processors 8 4
Compute units 6 2
Pixel rate 5.2 GPixel/s 2.6 GPixel/s
Texture rate 15.6 GTexel/s 5.2 GTexel/s
Floating-point performance 624 GFLOPS 104 GFLOPS


Radeon HD 7570  vs
5450 PCIe x1 
Memory clock speed 800 MHz 500 MHz
Effective memory clock speed 1,600 MHz 1,000 MHz
Memory bus 128 bit 64 bit
Memory 1,024 MB 512 MB
Memory type GDDR3 DDR3
Memory bandwidth 25.6 GB/s 8 GB/s

noise and power

TDP 60W 19W


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