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Differences What are the advantages of each

Front view of Radeon Sky 500

Reasons to consider the
AMD Radeon Sky 500

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Lower TDP 150W vs 190W More than 20% lower TDP
Front view of Radeon R9 380

Reasons to consider the
AMD Radeon R9 380

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Higher effective memory clock speed 5,500 MHz vs 4,800 MHz Around 15% higher effective memory clock speed
Slightly better floating-point performance 3,290 GFLOPS vs 2,432 GFLOPS More than 35% better floating-point performance
Slightly higher texture rate 102.8 GTexel/s vs 76 GTexel/s More than 35% higher texture rate
More shading units 1,792 vs 1,280 512 more shading units
More texture mapping units 112 vs 80 32 more texture mapping units
More compute units 28 vs 20 8 more compute units
Higher memory clock speed 1,375 MHz vs 1,200 MHz Around 15% higher memory clock speed

Features Key features of the Radeon Sky 500  vs R9 380 

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

Radeon Sky 500
153.6 GB/s
Radeon R9 380
176 GB/s

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

Radeon Sky 500
30.4 GPixel/s
Radeon R9 380
29.38 GPixel/s

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

Radeon Sky 500
76 GTexel/s
Radeon R9 380
102.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon Sky 500
2,432 GFLOPS
Radeon R9 380
3,290 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

gpu

Radeon Sky 500  vs
R9 380 
GPU brand AMD AMD
GPU name Pitcairn Antigua
Clock speed 950 MHz 918 MHz
Is dual GPU No No
Reference card None AMD Radeon R9 380 970 MHz 2 GB

raw performance

Shading units 1,280 1,792
Texture mapping units 80 112
Render output processors 32 32
Compute units 20 28
Pixel rate 30.4 GPixel/s 29.38 GPixel/s
Texture rate 76 GTexel/s 102.8 GTexel/s
Floating-point performance 2,432 GFLOPS 3,290 GFLOPS

memory

Radeon Sky 500  vs
R9 380 
Memory clock speed 1,200 MHz 1,375 MHz
Effective memory clock speed 4,800 MHz 5,500 MHz
Memory bus 256 bit 256 bit
Memory 4,096 MB 4,096 MB
Memory type GDDR5 GDDR5
Memory bandwidth 153.6 GB/s 176 GB/s

noise and power

TDP 150W 190W

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