Here's how you can download the Linux Mint 15 release candidate.
System Requirements for Linux Mint 15
x86 processor (Linux Mint 64-bit requires a 64-bit processor. Linux Mint 32-bit works on both 32-bit and 64-bit processors).
512 MB RAM (1GB recommended for a comfortable usage).
5 GB of disk space
Graphics card capable of 800×600 resolution
CD/DVD drive or USB port
Download Linux Mint 15 RC
Use these torrent links to download Linux Mint 15 RC.