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Differences What are the advantages of each

Front view of Radeon RX 455

Reasons to consider the
AMD Radeon RX 455

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Higher clock speed 1,050 MHz vs 850 MHz Around 25% higher clock speed
Higher effective memory clock speed 6,500 MHz vs 4,800 MHz More than 35% higher effective memory clock speed
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
Slightly higher memory bandwidth 104 GB/s vs 76.8 GB/s More than 35% higher memory bandwidth
Higher memory clock speed 1,625 MHz vs 1,200 MHz More than 35% higher memory clock speed
Front view of Radeon HD 5770

Reasons to consider the
ATi Radeon HD 5770

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GPUBoss is not aware of any important advantages of the ATi Radeon HD 5770 vs the AMD Radeon RX 455.

Features Key features of the Radeon RX 455  vs HD 5770 

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

Radeon RX 455
104 GB/s
Radeon HD 5770
76.8 GB/s

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

Radeon RX 455
16.8 GPixel/s
Radeon HD 5770
13.6 GPixel/s

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

Radeon RX 455
50.4 GTexel/s
Radeon HD 5770
34 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon RX 455
1,612.8 GFLOPS
Radeon HD 5770
1,360 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


Radeon RX 455  vs
HD 5770 
GPU name Tobago Juniper
Clock speed 1,050 MHz 850 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 768 800
Texture mapping units 48 40
Render output processors 16 16
Compute units 12 10
Pixel rate 16.8 GPixel/s 13.6 GPixel/s
Texture rate 50.4 GTexel/s 34 GTexel/s
Floating-point performance 1,612.8 GFLOPS 1,360 GFLOPS


Radeon RX 455  vs
HD 5770 
Memory clock speed 1,625 MHz 1,200 MHz
Effective memory clock speed 6,500 MHz 4,800 MHz
Memory bus 128 bit 128 bit
Memory 2,048 MB 1,024 MB
Memory type GDDR5 GDDR5
Memory bandwidth 104 GB/s 76.8 GB/s

noise and power

TDP 100W 108W


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