Despite their small size, each system is a full-fledged PC packed with Intel Haswell processors, Intel Iris Pro graphics and support for 4K displays or two 1080p displays.
As Liliputing's Brad Linder notes, the only real difference between the desktops is the CPU.
The EI730 model is powered by an Intel Core i5-4570R quad-core processor, while the EI750 features a faster Core i7-4770R chip.
In addition to Intel's Iris graphics, both (barebones) systems are equipped with space for up to 16GB of RAM, a 2.5 drive bay for an SSD or traditional HDD.
Additional specs include two Gigabit Ethernet jacks, four USB 3.0 ports, 802.11ac WiFi, Bluetooth 4.0, optical S/PDIF, SATA III and mSATA connectors, along with support for Windows 7 and higher.
It should probably also be noted that Zotac will be offering Plus models alongside the barebones systems with 8GB of memory and 1TB of storage.