
Originally Posted by
informal
Orochi definitely has 8 cores,it's just the way they are organized(modules) that is bringing confusion.You have 8 very real integer cores and 8 very real 128bit fmac units.Those 8 fmacs are in reality 4 double fmacs(256bit) that are called Flex FP by AMD.One 256bit FlexFP can be allocated to one thread only(AVX or single threaded code),or it can be split into 2 and each dedicated to it's "parent" integer core(2 fp threads running in parallel in module).
Shared parts of the design are saving die space and increasing efficiency.This is why AMD can cram 8 cores with 16MB of cache(total size) in less than 300mm^2.
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