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sc94597 on 19 April 2016
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CosmicSex said:

Guys, hold up one second:

GPU AMD GCN, 18 CUs at 800 MHz Improved AMD GCN, 36 CUs at 911 MHz

This can't be right.  This unit would be extrodinarly more powerful than the PS4

If my calculations are correct, this rumor calls for a system outputing 4.2Tflops compared to 1.84 in the PS4

I really have doubts about this.

Can someone tell me if the what the actual a system memory bandwidth of 218Gb/s would even be enough to feed this GPU?

The difference is comparable to that of an HD7850 to an HD7970 ( a little bit more than that.) 

http://hexus.net/tech/reviews/graphics/34497-amd-radeon-hd-7950-graphics-processor/

Which yes is a little bit less than 4 Tflops single precision. 

https://en.wikipedia.org/wiki/Radeon_HD_7000_Series

I don't see that as exceptionally unrealistic though for $100 on the base-price of a PS4. 

The memory bandwidth of a 7970 is 264 GB/s. I suspect there is more to the story than what these few specs provide us.