semi-dedicated just just a crafty term to name a vps
Typically a much much much much more powerful vps than is typically called "vps" on these boards.
Semi-dedicated providers will tell you exactly how "semi-dedicated" you are. Typically if you have semi-dedicated you share a massively-spec'd machine with 1 - 3 other people (compare this with anywhere from 25 to 100 other people you typically share with in a traditional vps) making it far more powerful and reliable than an equivalently priced dedicated server.
Semi-dedicated is normally advertised as a server with a limited amount of users.
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