Yes. Use a secure browser (OP is a little paranoid) in incognito mode to search for the model number. I was around on the 'chans when this hit the first time. There were a lot of garbage results being dumped into Google to cloud research.
It's not an especially powerful computer from a processing power standpoint, but when you consider the potential uses for something that has NO hardware backdoors and also has BUILT IN cryptographic abilities, you can see why they command a pricetag on the 'black' market. The government 'demilitarized' them when they moved to new models, but a few hundred got sent to government liquidation and instead of being destroyed, they were 'demilitarized' according to the standard for a normal computer- hard drive removed, battery removed, and sold at auction, mixed in with other pallets of computers.
Legality: Technically legal to own, and it must drive the clowns INSANE to know that people are waking up to this tech. They have 0days for all kinds of hardware, even before the manufacturer has demos out being reviewed, and here's all these systems that used to be issued to spooks, that can't even be touched! LOL
You couldn't post about P4-15-NB on the chans for a while without being flooded out by shills trying to scare people away from them.
No use trying to run Skyrim on one but for hardsec BBS/chat communication, even basic audio calls over encrypted mesh networks, they would be absolutely unparalleled. And if you've seen any hacker's desktop, it isn't gaming graphics, it's a lot of text windows, usually with a black background.
There are some encrypted networks where people are doing deep dives into analysis of some things pertaining to Q, and posting some very interesting things.
For safety and security, those things stay in those places.. although they usually get slowly brought out in discussion here and other CBTS places. There are certain hardware encryption requirements to even get in the door and start reading. You either need massive technical abilities to build your own system, tens of thousands of dollars to buy one off the shelf, or find one of these military systems that slipped through the cracks. A lot of people are choosing the 3rd option… if they can find one.