iNakedSnake
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But one of the biggest differences this time concerns processor chips. Sony with PlayStation 3 went with the nonstandard Cell chip, developed in collaboration with IBM and Toshiba, which required a separate chip for graphics. That combination, along with accessory chips and related memory, accounted for about $154 of the PlayStation 3′s total cost, according to TechInsights’ estimate at the time.
Making software for the Cell, by all accounts, also caused programmers to tear their hair out.
“The developers found it really tough to come to grips with,” recalled Dominic Mallinson, a vice president for research and development for Sony Computer Entertainment America, in a presentation Wednesday. Issues associated with programming the chip “caused the complexity and the cost to rise dramatically.”
Mallinson, who spoke at an event hosted by chip maker Advanced Micro Devices, said Sony listened to developers this time in a number of areas. For one thing, it went with an AMD chip based on the x86 design familiar to people who write PC programs.
That eight-brained chip, customized with input from Sony, also delivers the PlayStation 4′s graphics capability. TechInsights estimates the processor in the new console cost Sony $85.
But perhaps the thing programmers will be most excited about is the memory in the new console, Mallinson said. Not only is there a lot of it–eight gigabytes–but the chips used are a variety called GDDR5 that offers extremely high bandwidth in sending data to the processors.
In addition, where the PlayStation 3 had separate pools of memory for graphics and for the main processors, the memory in the successor device is one unified pool that can be used for either function, Mallinson noted. (The associated chips add about $62 to the cost of making the new system, TechInsights says).
The technology choices, overall, aid performance and cost at the same time.
“We selected components and semiconductor processes which are very mainstream which will allow us to hit those very aggressive cost targets and to cost reduce over time,” Mallinson said.
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