I have an executable instance of YouTrack with a dedicated capacity of 256 MB (never tried a lower value), on an old server with 1 GB of RAM in Debian. It feels pretty responsive, but so far I'm the only user: D
If you use Windows XP, this might work fine if Team City will only work with 256 MB of RAM.
Is there a need to use TeamCity, or do you only need it to integrate YouTrack with Git / Mercurial / SVN?
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