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SlyTurtle said:
Got a quick question;
Cerny said GDDR5 runs at 176 GB/s, this allowed devs to triangle in 1-2 months. Correct me if I'm wrong.
But then Cerny went on to say GDDR5 + eDRAM would be 1.088tb/s. Now my question is how long would it take to make triangle for GDDR5 +eDRAM, and what would of been the cost of a ps4 with GDDR5 + eDRAM.

The triangle time is more about the arch (PC like) and not the GDDR5...

About the GDDR5@256bits vs. GDDR5@128bits + eDRAM... he said that the first you can make games fast and easy like PC and expend time to use the full potential of the hardware or find others features to use in the games... now the second you need to learn how to use the eDRAM cache and each developer needs to develop special techs to handle it and try to reach the full potential of the hardware.

In easy term... in the first you use your time to only to develop the game... in the second you use it to make the game run on the hardware and to develop the game.

It's more easy to get the full potential of the hardware in the first case... in the second you need more work and time... you can make this comparison:

GDDR5@256bits: Xbox 360
GDDR5@128bits + eDRAM: PS3

That's what I understand from the presentation last week.

It is more easy and fast to reach the full potential of PS4 than the Xbone... and the PS4 have more potential than Xbone... the things is not good to Xbone in terms of development.