Sony has been touting the PS5's fast load times and extolling the power of its custom 825GB SSD for months. But now we can clearly see just how fast game load times are on the next-gen console.

Thanks to a leaked video that was removed from YouTube, we were able to see "Spider-Man: Miles Morales" load in just 7 seconds on the PS5.

The now-deleted YouTube video was also originally posted on the r/PS5 subreddit and Imgur. Sony is currently under an embargo on most content related to the PS5 and is doing its best to remove any content that would give away secrets prematurely.

Specifically, the 7-second figure is the time it takes to enter the game from the PS5's main menu, and another 2 seconds to load a save file. However, thanks to the custom PCIe 4.0 SSD at the heart of the PS5, even this total of 9 seconds is quite impressive; a similar test on a PS4 would take 43 seconds.

In our hands-on with the PS5, we noted that despite being a huge gaming console, it is not as heavy as its monolithic size would suggest. Also, as shown in the Astro's Playroom hands-on, the DualSense controller is a significant upgrade over the traditional DualShock controller.

We'll have more on this in the near future, but for now, just imagine the possibilities of being able to launch games so quickly. Even if the Xbox Series X supports multiple games and can easily switch between them.

Reduced loading times are a major selling point for the PS5. Architect Mark Cerny specifically designed the PlayStation 5's internal hardware to avoid data bottlenecks whenever possible.

The PS5 accomplishes this primarily through the use of custom-designed solid state drives (SSDs), capable of pushing 5.5 GB of bandwidth per second. Combined with hardware-accelerated decoding, this pushes bandwidth to 8-9 GB per second. Even the fastest consumer desktop SSDs can push 5GB/s, but the computer does not have a custom design like the PS5 to allow data to communicate with the rest of the hardware as fast as possible.

With data being pushed so fast, the design of the game could actually change. According to Cerny, one of the biggest challenges for developers is trying to achieve their artistic vision within the constraints of the hardware.

"For example, say you want to shout something when an enemy dies. This can be put out as an urgent cut-in-front-of-everyone request, but it could still very well take 250 milliseconds to get the data back due to other game and operation requests in the pipeline," Cerny told Eurogamer. This 250 milliseconds is problematic, because if you're going to yell something when an enemy dies, it needs to happen fairly instantaneously."

Basically, Cerny said, if data is needed quickly, those megabytes must be stored in RAM. However, RAM is precious, and using some RAM means having to give up something else; the PS5's SSD is so fast that it can, in effect, act almost like RAM.

The PS5 unit has been sent to reviewers, but all reviewers are strictly forbidden from publishing the video. The person who created this video either had early access to the PS5 console through a retailer or violated an NDA.

Twitter user Alejandroid1979 posted an interesting comparison between Spider-Man on PS4 and Miles Morales on PS5: On PS4, when returning to the open world of Manhattan after completing a mission, a long loading screen is required; on PS5 allows Morales to get out easily, and the buildings and the city all seem connected.

PS5 and "Spider-Man: Miles Morales" will be released on November 12.