Intel after back orders for the H310 chipset has introduced a new H310C to replace it. Meanwhile the Z390 was originally expected to be taped out at 14nm, but due to the poor yields Intel is using 22nm. Intel is still taping out 200 series chipsets. 7th generation Kaby Lake processors need a 200 series chipset based motherboard.
Intel has continued to have issues keeping up with demand at 14nm which is why they have had to reallocate several lines to try to get ahead of the problem.
The H310C is aimed at the lower end of the market which has seen a lot of pent up demand. Intel is supporting Windows 7 with the H310C. Machines with a Celeron and Pentium processor are sold mostly in less developed markets. We should point out that Windows 7 is near the end of extended support and users should consider strongly moving to Windows 10 which still accepts valid Windows 7 keys.
Intels partners sell more H310C motherboards than any other chipset. This is due to the lower price point and Intel has been attempting to take market share from AMD with sub $80 µATX motherboards. Low cost ATX motherboards are also available for under $100.
µATX motherboards with integrated ae popular for home and office use. Many stuff a new motherboard into okl machines to give them a new lease on life. DDR3 motherboards are available which can allow the use of existing memory if desired. DDR4 however is lower in cost making it less costly to modernize.
Power supplies should be 80 Plus compliant to reduce grid demands. New µATX chassis are low cost but bundled power supplies tend to be very poor quality. Its most efficient with double the needed PSU capacity as they tend to be at their most efficient with 40-50% loads.
The Intel Celeron is a low power CPU which makes it easy to use with lower capacity 500W power supplies. The BX80677G3930 7th Gen Celeron costs $61.90 (or less) and it comes with a fan included. The Celeron comes with intel 610 graphics included. The 7th gen Celeron uses DDR4 memory which is standard with the H310C motherboards.
Demand for Windows 7 compatibility is surprising as Windows 10 is actually extremely good for gaming. As of today, windows 7 has only got about 14 months left before extended support lapses. After that, it will join Windows XP and Windows Vista as an unsupported operating system.
Steam publishers have DOSbox available for supporting antique titles and recently we tested Starcraft which is a DX5 title and it works with fine with Windows 10.
Do not use low capacity power supplies. 80 Plus Gold power supplies are affordable and can do the job efficiently.