So, I have an old notebook from 2012; Compaq Presario CQ57. Here are the specs:
RAM: 2GB 1333 MHz DDR3 SDRAM + 1 free slot
CPU: Intel(R) Celeron(R) CPU B815 @ 1.60GHz
HDD: ATA Disk, ST320LT020-9YG14, Seagate, 320GB
GPU: Intel HD 3000
OS: Ubuntu 16.04 LTS
Basically, this notebook does its job...