AMD Hawaii GPU R9-290X ‘Volcanic Islands’ PCB Leaked – 512-Bit Interface and Massive Die Size?

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TheJimbo1234 said:

512-bit? Sweet jebus...........
Though I have to say, I'm not surprised and it would explain a lot about the new consoles (especially the PS4's absurd memory throughput) and if they have been working with MC and Sony, then they will have learnt a lot on how to customise their gear - one being that they would need gpu's to be able to access the vast system memory rather than having it's own independent memory.

It wouldn't mark the first time AMD has had a 512bit memory bus, they had one on the Radeon 2900XT.
Problem with that approach is, it requires a very complex memory controller and lots of layers on the PCB for traces, so it makes the cards more costly to make.

We needed GDDR6, last year. - Running 7680x1440 is stupidly demanding on memory amount and bandwidth.