AMD Radeon HD 7990 "Malta" Final Specs

[ethomaz]

disolitude said:

That's a low end card which as bandwitdh issues. Also that's an average of games some of which don't scale well. The ones that scale do at almost 90% efficiency. However you have games like Batman Arkham Asylum which don't scale at all. Essentially console ports usually suck at scalling

Games like Farcry 3, Crysis 3, Metro 2033 or any powerhouse games that are properly coded for PCs often see 100% scalling with second GPU.

http://www.hardocp.com/article/2012/12/05/far_cry_3_video_card_performance_preview/3#.UXGB17VJM1I

Like I said it all dependent on drivers and the result is not always great... there are a lot of graphics issues too... the SLI is a little better but in the same boat.

And 100% scaling is bullshit or anything is holding the single-GPU... if you have a GPU with A specs and mate a Crossfire with 2x A specs the result will never be 100%.