The all-in-one Raspberry Pi 400 laptop is a succesful gadget, however these searching for its most energy could also be dissatisfied by its 4 GB of reminiscence. When the Pi 4 and Compute Module 4 have double that determine, certainly the Pi 400 might catch up! A reddit person referred to as [Pi800] rose to the problem by replacing the 4 GB chip from the Pi 400 with the 8 GB chip from a Pi Compute Module, ensuing within the so-called Pi 800, a working 8 GB all-in-one Pi.
As a bit of labor it’s a deceptively easy but extraordinarily fiddly piece of soldering that requires a gentle hand for even essentially the most expert of solderers. What takes it past the norm although is the reballing course of. A ball-grid-array chip has a grid of small balls of solder on its underside that make the contacts, and these soften when it's soldered so require alternative earlier than remodeling. That is usually accomplished with a template of rigorously aligned holes to line up balls of solder in a stream of scorching air, however missing the template on this case the job was accomplished by hand, laboriously ball by ball. A soldering process we’d hesitate to tackle ourselves, so we’re impressed.
The result's an 8 GB all-in-one Pi, and it’s actually not past the realms of risk that an official model of this mod may very well be a future Raspberry Pi product. Maybe we’ll watch for that, however do you have to be impatient then at the least it’s potential to roll your individual. It’s actually not the first BGA memory swap we’ve brought you.