Radeon HD 7770 vs 4870 X2 |
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Differences What are the advantages of each
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| Higher clock speed | 1,000 MHz | vs | 700 MHz | Around 45% higher clock speed | |||
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| Better PassMark score | 2,194 | vs | 1,279 | More than 70% better PassMark score | |||
| Higher effective memory clock speed | 4,500 MHz | vs | 3,600 MHz | 25% higher effective memory clock speed | |||
| Higher memory clock speed | 1,125 MHz | vs | 900 MHz | 25% higher memory clock speed | |||
| Much lower TDP | 80W | vs | 286W | 3.6x lower TDP | |||
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| Is dual GPU | Yes | vs | No | About half of graphics cards are dual GPU | |||
| Much higher memory bandwidth | 230.4 GB/s | vs | 72 GB/s | Around 3.2x higher memory bandwidth | |||
| Better floating-point performance | 2,240 GFLOPS | vs | 1,280 GFLOPS | 75% better floating-point performance | |||
| Much wider memory bus | 512 bit | vs | 128 bit | 4x wider memory bus | |||
| More memory | 2,048 MB | vs | 1,024 MB | 2x more memory | |||
| Significantly more shading units | 1,600 | vs | 640 | 960 more shading units | |||
| More render output processors | 32 | vs | 16 | Twice as many render output processors | |||
| More texture mapping units | 80 | vs | 40 | Twice as many texture mapping units | |||
| More compute units | 20 | vs | 10 | Twice as many compute units | |||
| Slightly higher texture rate | 56 GTexel/s | vs | 40 GTexel/s | 40% higher texture rate | |||
| Better cloud gate factor score | 18.34 | vs | 16.18 | Around 15% better cloud gate factor score | |||
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Benchmarks Real world tests of Radeon HD 7770 vs 4870 X2
PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark
Cloud Gate Factor Data courtesy FutureMark
Reviews Word on the street
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