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Can You Use Raspberry Pi 5 as a Desktop Computer?
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87€ does not include case, power supply, or microSD. Realistically close to 120€ to get a working system and for that kind of money yes you can get a newish Celeron powered PC with 8GB RAM and 128GB SSD/NVME.
I am doing conversion from Canadian Dollar so my calculations and what is actually available in Europe might be off a bit. It is totally possible here though.