Hacker News Reader

> The PS5's SSD can supply data at 5.5 GB/s. The RAM runs at 448 GB/s, 81 times faster. https://www.anandtech.com/show/15848/storage-matters-xbox-ps...

SSD is compressed (by "Kraken"), giving 8-9GB/s typical.

You could compress RAM too, but not worth the latency penalty.

View on HN

Decompressing something to use during rendering of the same frame probably also isn't worth the latency penalty. Compression is fine for streaming data, but not so much for low-latency seeking around within data.

Textures are kept compressed in ram

Yes, but they have special formats (ETC, PVRTC, ASTC etc.) so GPU can use them directly, and the compression is lossy. e.g. PNG would not work in this situation because GPU cannot decode PNG textures fast enough.

Reply on news.ycombinator.com