They differ only in CPU
Zotac has introduced several new mini-PCs. Among them are the Zbox CI671 Nano and CI651 Nano models, which stand out because they are one of the first (possibly the first) passive mini-PCs on the market with Core Ultra processors.
The two specified versions differ only in CPU, so we will talk about them as one model. It can be based on either Core Ultra 7 155U or Core Ultra 5 125U. Let us remind you that technically these are the closest processors with two large cores.
These processors are not initially aimed at passive cooling, but if the power limit is limited, they may well work that way.
Zotac notes that the new PC has Wi-Fi 6, Bluetooth 5.2, four USB 3.2 ports, HDMI 2.1, USB-C 3.2, a pair of DisplayPort 1.4, two slots for DDR5 memory, two slots for SSD format M .2 and the body volume is 1.79 liters.