Playstation 4 Pro använder två grafikchip till kompatibla spel

Under en presskonferens på Sonys högkvarter i San Mateo berättade arkitekten bakom konsolen, Mark Cerny, mer om hur Playstation 4 Pro fungerade. Vi fick bland annat veta att den nya konsolen använder två grafikchip, där ett används till vanliga spel, medan det andra chippet kopplas in vid Pro-kompatibla spel. Cerny sade:

"We doubled the GPU size by essentially placing it next to a mirrored version of itself, sort of like the wings of a butterfly [...] That gives us an extremely clean way to support the existing 700 titles. We just turn off half the GPU and run it at something quite close to the original GPU."

Sony avslöjade också att de lagt till ytterligare ett gigabyte RAM-minne av ett långsammare slag. Orsaken är att det då blir mer snabbt minne (Playstation 4 använder GDDR5) minne över till spel, medan det långsammare minnet kan ta hand om bakgrundsfunktioner som öppnade appar. Cerny förklarade:

"On a PS4 standard model, if you're switching between an application, such as Netflix, and a game, Netflix is still in system memory even when you're playing the game. We use that architecture because it allows for a very quick swap between applications.. On PS4 Pro, we do things differently, when you stop using Netflix, we move it to the slow, conventional gigabyte of DRAM. Using that strategy frees up almost one gigabyte of the eight gigabytes of GDDR5. We use 512MB of that freed up space for games, which is to say that games can use 5.5GB instead of the five and we use most of the rest to make the PS4 Pro interface - meaning what you see when you hit the PS button - at 4K rather than the 1080p it is today."

Hur är din egen Playstation 4 Pro-pepp?