Big core is not the majority of AMD CPU sales.
We know that the only thing AMD acquires from Globalfoundries is their big core chips, and that's roughly 1.1 billion per year, if they were able to fulfill the commitment. Apply a 35% gross margins and then you'll reach 1.5 billion. Problem is that AMD is below the expected target to reach the WSA, so their big core business must be somewhat smaller than this optimal case, let's say 1.3/1.4 billion, or 325/350 million per quarter. With AMD CPU sales being around 800 million per quarter, that means that the cat cores are selling more than the big core family.
What the F....ck man, you dont even know how to calculate Revenue and you are talking about AMDs financials ???
Revenue = CoGs / (1-Margins%)
CoGs = 1.1Billion as you said from GloFo
Margins = 35% or 35/100 = 0.35
So
Revenue = 1.1Bil / (1-0.35)
= 1.1Bil / (0.65)
= 1.69Bil
AMD manufactures more than CPUs in GloFo, they also manufacture Motherboard Chipsets.
Also, BigCore CPUs (FX & Trinity) have more than
double the ASP value of Bobcat/Jaguar APUs/SoCs. That means that is takes 2 or more Bobcat/Jaguar APUs to match 1 BigCore FX or Trinity/Richland APU in Revenue.
35% is the AVERAGE Gross Margins of all AMD products and not the Big Cores alone.
But we do know that overall BigCore quantity volume sold (Both in Desktop/Server and Mobile) is higher than Small Core(BobCat/Jaguar) volume.
So to sum up,
BigCore revenue is more than 50-60% of AMDs CPU products. And since the overall revenue per year is close to 5Billions for 2013, BigCore CPUs are close to 2 Billions worth of Revenue.