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HoloDust on 19 April 2016
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drkohler said:
Nate4Drake said:

Nope ! Sony and AMD have a much higher understanding than anybody here about hardware, and 218GB/s memory bandwidth is more than enough considering The new Polaris Architecture is a lot more efficient, and "less memory bandwidth hungry"; also, don't forget about PS4 being heavily geared towards asynchronous compute which will allow non-graphics calulations to be done on the GPU !!! ... Don't say things you have no idea, please

Pot calling the kettle?

I hate to tell you but the PS4 is already choking on the 176GB/s bandwidth available. If you think that a 30% faster CPU and a 220% more powerful GPU can be satisfied with 218GB/s, you are seriously wrong. leaving aside wherever that weird bandwidth comes from, it doesn't exist in any gddr5 data sheet. And while we are on the subject, if you do more gpgpu work as you imply (which is correct if developers actually used it), you also grab/send more memory down memory lane. So you not only have a higher CPU and much higher Graphics Compute load on the memory bus, you would also have an additional GPGPU load tacked on it, in the end three "customers" are fighting for the one memory bus. There is an advantage having a common memory pool for everyone, but there is also a serious disadvantage - when too many processors fight for it. 

I'm kinda on the edge on memory bandwidth issue here - if it was nVidia's GPU, I'd say those ~220GB/s would be probably barely enough (given that 980 has 224GB/s on a 2048:128:64 config), but it's AMD - so yeah, but no. Then again, if it's basically rumoured Polaris based 480 (40CUs with 4 disabled) inside...who knows.

P.S. Nice to see you back in action, now that new hardware is releasing.