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HollyGamer said:

The reason why it need to be APU is for cost and latency, also many physicist job that should be done on CPU in PS3/Xbox 360 are now done on GPU with HSA and other methods , So yes cost is a factor in building consoles.  

Are you suggesting that because the Playstation 4 has an APU it's latency is somehow going to make it a better gaming platform for gaming than a Radeon RX 5700 XT and a SEPARATE Ryzen processor?

Also, cost is only up to a point. You need to understand foundry economics... But the basics is thus...

It is cheaper to consolidate multiple chips into a single chip... Up to a point, then you start to impact on yields, which directly impacts on cost.

Which is why AMD has taken the opposite route with Ryzen and started building lots of smaller chips, linking them up with infinity fabric as they are able to get around the yield issue, scale up in core counts and reduce costs.

Here is a little bit of educational light reading on chip sizes and yields and their relationship to cost.
https://www.anandtech.com/show/15219/early-tsmc-5nm-test-chip-yields-80-hvm-coming-in-h1-2020

I also don't think you understand what HSA is all about either... Some more light reading:
https://www.anandtech.com/show/10387/hsa-11-specification-launched-multi-vendor-support



--::{PC Gaming Master Race}::--