What is the technology that supports the overwhelmingly explosive loading time of PS5?
When the PlayStation 5 (PS5) and Xbox Series X were announced, it was very difficult to find the difference between the two by
PlayStation 5 Hits Game Data Compression Ratios the Xbox Doesn't Touch --ExtremeTech
https://www.extremetech.com/gaming/323046-playstation-5-hits-game-data-compression-ratios-the-xbox-doesnt-touch
The storage capacity of the PS5 is 825GB, of which only 667GB can actually be used to store game data. Although the PS5 supports external USB storage and expansion SSD slots, the storage capacity installed in the main unit is considerably less than the 1TB (actual usable capacity is 802GB) of the Xbox Series X. However, the PS5 uses superior data compression technology, which may allow you to store more game data than the Xbox Series X.
Both PS4 Pro version and PS5 version have been released ` ` Subnautica '', it is clear that the data capacity is 14 GB for the PS4 Pro version, while it is 3.5 GB for the PS5 version It has become. Also, the data capacity of 'CONTROL ' is 42GB for the Xbox Series X version, while it is only 25GB for the PS5 version, and the data size is 42% smaller.
However, not all games have the smallest PS5 data size. For example, in the case of ' Mass Effect Legendary Edition ', the data size of the PS5 version is 101GB, while the data size of the Xbox Series X version is 88GB.
The reason for the smaller game data size on both PS5 and Xbox Series X platforms is to prevent duplication of in-game texture and object data between game files to improve loading speed. This is because it has been taken.
However, ExtremeTech points out that the bigger difference is the difference in data compression technology between PS5 and Xbox Series X. PS5 uses a game data compression tool called 'Oodle' from
The data compression technology used by PS5 is 'Oodle Kraken' on the hardware side and 'Oodle Texture' on the software side.
The figure below shows how much the Oodle brand data compression tool has a higher 'compression ratio' and faster 'decompression speed' than other competing tools. 'Zlib' is the data compression method adopted by PS4, and the data compression ratio is '1.64 to 1'. On the other hand, the data compression ratio of Oodle Kraken adopted by PS5 is '1.84 to 1', which is higher than Zlib and takes less time to decompress.
Oodle Kraken used by PS5 is a codec featuring high compression rate and high-speed decompression in the lossless codec SDK 'Oodle' used for data compression and decompression, and is installed as a decoder that functions on PS5 hardware. It has been.
And the data compression algorithm that runs on the PS5 software is 'Oodle Texture' that reduces the data capacity by converting the texture to BCN using a specific encoding method. With this algorithm, the data size can be reduced by about 10% without loss, and the data size can be reduced by 20 to 50% without loss. The data compression ratio of Oodle Texture is '1.5 to 1', but RAD Game Tools
On the other hand, Microsoft has adopted a data compression method called 'BCPack' for Xbox Series X. Data compression technologies such as Oodle Kraken and Oodle Texture do not have such a large data compression rate by themselves, so if Xbox Series X combines BC Pack and Zlib, it may achieve a higher data compression rate than PS5. Was pointed out.
However, according to RAD Game Tools, Oodle brand data compression technology can be used in combination. In fact, PS5 has succeeded in achieving a high compression ratio of '3.16 to 1' by combining Oodle Kraken and Oodle Texture.
So, ExtremeTech points out that the big difference between the PS5 and the Xbox Series X is that 'Sony has paid an Oodle brand license and built a Kraken decoder directly into the hardware to accelerate the data compression algorithm.' ..
In fact, RAD Game Tools tweeted that Sony has licensed Oodle Texture for PS4 and PS5 developers.
Graciously, Sony has obtained a license for Oodle Texture for all PS4 and PS5 developers !! On PS4 or PS%, you can use Oodle Texture to convert Sony's GCN format !! And of course, it all works incredibly with the PS5's built-in hardware Kraken decoder.
— Radgametools (@radgametools) June 16, 2020
RAD Game Tools says, 'Superior data compression technology reduces game download times and allows you to store games with larger data sizes on a single disc. Uncompressed 80GB of game data. If there is a 2 to 1 compression ratio, the data capacity to be stored on the disk will be 40GB, so it will be possible to store twice the capacity of the game. ' It emphasizes that the benefits of the improvements to PS5 are not just faster data loading speeds.
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