I just picked up a used Thinkpad t480 with 8th gen i5 / 16gb ram / ssd for about $120 on ebay. I believe 8th gen the first i5 quad core for laptops. And T480 is the last Thinkpad with removable battery and two dimm slots. Kindof the sweet spot between the old upgradability and modernish hardware imo
I just picked up a used Thinkpad t480 with 8th gen i5 / 16gb ram / ssd for about $120 on ebay. I believe 8th gen the first i5 quad core for laptops. And T480 is the last Thinkpad with removable battery and two dimm slots. Kindof the sweet spot between the old upgradability and modernish hardware imo