Citation :
All of Intel 300 series chipsets excluding the Intel Z370 are based on a 14nm node while the Z370 itself is based on a 22nm process node. Aside from that, the Intel Z390, just like other 300-series chipsets based on the 14nm process, features support for USB 3.1 Gen 2.0 and Wireless AC 802.11 AC plus Bluetooth 5.0 support. (...)
If we take a look at the differences between the Intel Z370 and Z390 PCH, we won’t see major differences. All of Intel 300 series chipsets excluding the Intel Z370 are based on a 14nm node while the Z370 itself is based on a 22nm process node. Aside from that, the Intel Z390, just like other 300-series chipsets based on the 14nm process, features support for USB 3.1 Gen 2.0 and Wireless AC 802.11 AC plus Bluetooth 5.0 support. Now Intel had already listed the Z390 chipset for a while on their webpage but they removed it a few days ago. Do note that the webpage has been on Intel’s website and almost everybody had covered the details that were posted. However, if Intel wanted to, they could have removed the webpage at that moment when the stories starting hitting the web. The reason they waited this long to remove the Z390 listing was not to avoid any further coverage because it was well known that the chipset would make it’s way to the market but the issue is something else. Due to 10nm delay, Intel has put a lot of strain on their current 14nm production. There are new chipsets coming for the 8th gen Intel Xeon platform (C246 PCH). The company already put the entry-level H310 chipset on standby to ensure maximum 14nm production smoothness. There have been reports that the H310 production will resume in July, with motherboard makers now focusing more on the B360 products which are seen as an alternative. But with new 14nm chip-sets on the verge, Intel will be replacing 14nm Z390 PCH with the 22nm design. (...) With Intel putting rebadged 22nm Z370 PCHs as Z390 on motherboards, we aren’t going to see native support for USB 3.1 Gen 2 or wireless capabilities that are included on other 300-series chipsets. Instead, motherboard makers would rely on 3rd party controllers to provide users with these features. Third party controller chipset manufacturers such as ASMedia would see a huge demand for their SKUs with specific features that would have been available on 14nm Z390 chip sets.
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