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Differences What are the advantages of each

Front view of Radeon HD 7770

Reasons to consider the
AMD Radeon HD 7770

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Significantly higher clock speed 1,000 MHz vs 550 MHz More than 80% higher clock speed
Better PassMark score 2,194 vs 514 More than 4.2x better PassMark score
Higher effective memory clock speed 4,500 MHz vs 2,800 MHz More than 60% higher effective memory clock speed
Slightly higher memory bandwidth 72 GB/s vs 44.8 GB/s More than 60% higher memory bandwidth
Higher memory clock speed 1,125 MHz vs 700 MHz More than 60% higher memory clock speed
Front view of Mobility Radeon HD 4830

Reasons to consider the
ATi Mobility Radeon HD 4830

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GPUBoss is not aware of any important advantages of the ATi Mobility Radeon HD 4830 vs the AMD Radeon HD 7770.

Benchmarks Real world tests of Radeon HD 7770 vs Mobility Radeon HD 4830

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon HD 7770  vs Mobility Radeon HD 4830 

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

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

Radeon HD 7770
16 GPixel/s

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

Radeon HD 7770
40 GTexel/s
Mobility Radeon HD 4830
17.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7770
1,280 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

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