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Differences What are the advantages of each

Front view of Radeon Sky 700

Reasons to consider the
AMD Radeon Sky 700

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Higher memory bandwidth 264 GB/s vs 153.6 GB/s More than 70% higher memory bandwidth
More memory 6,144 MB vs 4,096 MB 50% more memory
Higher effective memory clock speed 5,500 MHz vs 4,800 MHz Around 15% higher effective memory clock speed
Slightly better floating-point performance 3,226 GFLOPS vs 2,432 GFLOPS Around 35% better floating-point performance
Slightly higher texture rate 100.8 GTexel/s vs 76 GTexel/s Around 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
Front view of Radeon Sky 500

Reasons to consider the
AMD Radeon Sky 500

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Lower TDP 150W vs 225W Around 35% lower TDP

Features Key features of the Radeon Sky 700  vs 500 

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

Radeon Sky 700
264 GB/s
Radeon Sky 500
153.6 GB/s

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

Radeon Sky 700
28.8 GPixel/s
Radeon Sky 500
30.4 GPixel/s

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

Radeon Sky 700
100.8 GTexel/s
Radeon Sky 500
76 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon Sky 700
3,226 GFLOPS
Radeon Sky 500
2,432 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 700  vs
500 
GPU brand AMD AMD
GPU name Tahiti Pitcairn
Clock speed 900 MHz 950 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 1,792 1,280
Texture mapping units 112 80
Render output processors 32 32
Compute units 28 20
Pixel rate 28.8 GPixel/s 30.4 GPixel/s
Texture rate 100.8 GTexel/s 76 GTexel/s
Floating-point performance 3,226 GFLOPS 2,432 GFLOPS

memory

Radeon Sky 700  vs
500 
Memory clock speed 1,375 MHz 1,200 MHz
Effective memory clock speed 5,500 MHz 4,800 MHz
Memory bus 384 bit 256 bit
Memory 6,144 MB 4,096 MB
Memory type GDDR5 GDDR5
Memory bandwidth 264 GB/s 153.6 GB/s

noise and power

TDP 225W 150W

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