question about VM's memory

Hello,

Run the "free" command we can see how many memory the system has. Say the seen memory is 1GB, how to make sure all them are delicated memory, or some are delicated some are burst? I ask this b/c I bought a VPS with 1GB delicated memory with OVZ, 'free' sees it's totally 1GB, but not sure if it includes the burst.

$ free -m

         total       used       free     shared    buffers     cached

Mem: 1024 286 737 0 0 147

-/+ buffers/cache: 139 884

Swap: 0 0 0

Thanks.