6 or 7 PCIe slots for things like graphics, sound, and network cards
4 slots for RAM
Best for gaming
MicroATX:
$9.6*9.6$ inc
4 PCIe slots
4 slots for RAM
Case dimensions: You don’t want a case that also accepts ATX if you want to build something smaller. Also, some MicroATX cases are slightly wider than ATX-friendly mid-towers, so look carefully at the case dimensions.
Suitable for gaming
Mini-ITX:
$6.7*6.7$ inc
1 PCIe slot for a graphics card
2 slots for RAM
Hard for gaming
An Intel NUC makes an excellent home theater PC, do not accept full-size graphics cards
Future:
Intel tried to introduce a replacement for ATX called BTX in 2004, but it never caught on;
At Computex 2019, Asus showed off a high-end motherboard concept called Prime Utopia;
Concepts like the Prime Utopia are great, but it’s unlikely we’ll see a shift away from ATX in the near future. ATX and its related standards have served the PC enthusiast community well for several decades now.
Recmended:
x299系列: ¥3000
z390系列: ¥1500
z370系列: ¥1300
z270系列:¥1200
z97系列: ¥900
GPU: NVIDIA is much better in deep learning than AMD