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System Name | SolarwindMobile |
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Software | Windows 10 Home 64-bit (Version 1607, Build 14393.969) |
Probably a typo.The head scratcher was the comparison between the 7870 and the 8870.
HD 7870 = 1280 * 2 * 1 GHz = 2560 GFlops/2.56 TFlops (as per my original post)- correct?
Yet the graph states 2.25 TFlops
So I was wondering if the 2.25TF calc for the HD 7870 was also a factor in the 3.94 TF for the new card (i.e. 12% lower than theoretical). If the Oland is a 1792 shader part, then whomever put the graph together has trouble multiplying three numbers together it would seem...since 3.94TF is a theoretical number, and therefore the theoretical number for the 7870 is 2.56TF - not 2.25
The DP number is correct.
7870 -> 160 FMA GFlops
8870 -> (1792 / 16) * 2 * 1.1 = 246.4 FMA GFlops
http://www.techpowerup.com/img/12-09-17/78a.jpg