My current config
OS: Ubuntu 20.4 (Windows 7 on another hard drive as well)
CPU: Core i7 640M (You can find it on eBay for ~$50 - Much thanks to Cybersax above for noting the processor was upgradable)
RAM: 8GB
SSD: EVO 850
My brother had this laptop for a few years before he passed away. It stopped working on him shortly after he got it - would boot, but neither display would work without messing with the HDMI port.. (plugging in an external monitor, TV, etc - MAY get them to work 1 time out of 50). Ended up ordering a motherboard and replacing it - that fixed the display issues, ordered the i7 CPU around the same time, and upgraded the RAM from 4GB to 8GB today.