Comment by Yetanfou

Gitlab, no. Gogs [1] or Gitea [2], no problem. I run Gitea on an Intel SS4200 (2.4 GHz Pentium E2200, 2 GB, 8 TB JBOD), it hardly causes a blip on this rather anaemic system. The process generally takes up around 35 MB (RSS), it talks to a PostgreSQL database server on the same box. You would not want to run a service the size of Github on this but for a personal repository it is more than enough. If your projects get so popular that they outgrow the hardware or VPS just move to a higher tier.

[1] https://gogs.io/

[2] https://gitea.io/