| Yes, the real server will need an amount of memory and CPU to run the VPS administration software, then split the rest for VPSs. If the seller offer 512MB RAM, you get 512MB. Of course, you can still add swap memory like a real dedicated server. In VPS software likes Virtuozzo, you can see the whole CPU, like Dual Xeon or Dual Opteron, and all memory, likes 8GB RAM, but you cannot use it. You can just use what the seller sets
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