[h=1]Report: PS4 Pro ‘Boost Mode’ improves performance on some older games[/h]
[h=2]It’s part of PS4 firmware 4.50[/h]
Sony’s next major PlayStation 4 firmware includes a new system setting, Boost Mode, that reportedly enables the PlayStation 4 Pro to deliver better performance for games that don’t explicitly support the beefier console.
The reports come from PS4 owners who are testing a beta of the upcoming system software update,
version 4.50. A screenshot of the PS4’s settings menu from a tester named Mladen Tapavicki mentions Boost Mode, and describes it while offering a caveat:
Experience improved gameplay, including higher frame rates, for some games that were released before the introduction of PS4 Pro (CUH-7000 series). Turn this off if you experience unexpected behaviour during gameplay.
You can see the Boost Mode in action in the comparison video above, which shows the opening of Tango Gameworks’
The Evil Within — a game that has not been patched with PS4 Pro support — running with and without Boost Mode enabled. Boost Mode offers a clear frame rate improvement from the very choppy performance of the standard game. Reports from players suggest that Boost Mode would only help games in which the frame rate is unlocked.
PS4 firmware v4.50 will reportedly add a Boost Mode for the PS4 Pro. Mladen Tapavicki/Abload.de The PS4 Pro, which was released in November, plays every PS4 game. However, developers must specifically patch their games with PS4 Pro support to offer higher-fidelity visuals such as 4K resolution. Even though the PS4 Pro is
more than twice as powerful as the original PS4, the Pro doesn’t currently use that extra juice if a game has not been coded to support the system.
Sony’s engineering team designed the PS4 Pro that way on purpose. Mark Cerny, the lead system architect of the PS4, said in an
interview with Digital Foundry last year that the company wanted to ensure that every PS4 game would be compatible with the Pro. The simplest way to do that was to beef up the PS4’s GPU while keeping the CPU relatively similar.
Related
[h=4]
PS4 Pro’s additional RAM frees up memory for game developers[/h]
“We doubled the GPU size by essentially placing it next to a mirrored version of itself, sort of like the wings of a butterfly,” said Cerny. “That gives us an extremely clean way to support the existing 700 titles.” In essence, the PS4 Pro switches into a non-Pro compatibility mode when it’s running a game that hasn’t been patched to support the console. It only uses half of its GPU at a clock speed similar to that of the launch PS4’s GPU.
That solution avoids problems that can arise by simply throwing more power at a game that wasn’t developed with that increased capability in mind, Cerny explained.
“Moving to a different CPU — even if it’s possible to avoid impact to console cost and form factor — runs the very high risk of many existing titles not working properly,” Cerny told Digital Foundry. “The origin of these problems is that code running on the new CPU runs code at very different timing from the old one, and that can expose bugs in the game that were never encountered before.”
It appears that with Boost Mode, Sony is allowing players to throw that caution to the wind if they want to try to eke higher frame rates out of their games.
Sony has not officially announced a Boost Mode for the PS4 Pro, let alone when it will be released. We’ve reached out to the company for comment, and will update this article with any information we receive.