This surprisingly cheap Kingdel PC features the capable i7-8565U (4C / 8T up to 4.60 GHz), 16GB of RAM and 256GB of SSD storage for $619. Cooling looks appropriate thanks to a decently-sized 9.2 x 5.9 x 2-inch heat sink case. Our only reservation is the included Windows 10 Pro license which could be of dubious origin, so be aware of that.
