Four years after the Raspberry Pi 4 shipped, today the Raspberry Pi 5 is launching with a much improved SoC leading to significant performance gains.
The Raspberry Pi 5 is designed to deliver a 2~3x performance improvement over the Raspberry Pi 4. The Raspberry Pi 5 features a quad-core Cortex-A76 processor that clocks up to 2.4GHz, compared to the four Cortex-A72 cores found in the Raspberry Pi 4 that only clocked up to 1.8GHz. The graphics are also much-improved with now having an 800MHz VideoCore VII graphics processor over the VideoCore VI graphics with the Raspberry Pi 4. The Raspberry Pi 5 is capable of driving two 4K @ 60Hz displays and features 4K @ 60 HEVC decode hardware capabilities.
Also interesting with the Raspberry Pi 5 is that it features in-house silicon in the form of the RP1 "southbridge" used for much of the board's I/O capabilities. This southbridge should yield faster USB I/O along with other I/O bandwidth upgrades like a doubling of the peak SD card performance. The Raspberry Pi 5 also features a single-lane PCI Express 2.0 interface for improved connectivity.
~~Could you elaborate, as I would imagine you'd be able to buy it from anywhere that wants to sell it, if not online?~~
Edit: As I read further into this conversation a comment stood out for me that gave me understanding on what the original comment I was replying to might have been speaking about.
Ever since the pandemic they've diverted 99% of all available inventory to business only sales channels. They blamed the chip shortage, but it's been several years now ongoing.
You can only find the lowest tier crap stock, old stock, or scalped stock, from retail sellers.
This is very well documented and even websites setup to check stock across multiple resellers in the hopes of finding that 1% of retail allocation.
They sold out the community that built them up in favor of a business to business sales model. Don't let their PR team, or their fanboys, tell you otherwise.
That's the problem. They're always out of stock.
https://www.adafruit.com/search?q=raspberry%20pi%204
https://www.sparkfun.com/categories/233
You'd even be hard pressed to find one at a Micro Center or some other physical store.
I just managed to get one like a month ago. After watching all the retailers I could find for like 2 years. Eventually I found a site that aggregated them to make it easier but it was Still like 3 months before I caught someone with stock in time to buy it. Figures the next one would come out right after all that...