H170 vs Z170 based motherboards: main differences?

I'm planning to build a new system and still am not sure before committing to buy.
My thread is here: New ~$1,500 gaming/everyday build: Intel Skylake forcing me go to AMD?

But in here I need a specific help regarding the main technical advantages of the rich featured Z170 motherboards vs the H170.
From what I understand the H170 motherboards feature less PCIe ports and I love it because I will only use one GPU, the H170 supports -2 USB3 ports (no problem), no overclock is possible, they are cheaper, they require a 2133 memory ram.
So is memory speed only related to overclocking or something else?

Do you guys know any other limitation that I could miss later?

Z170, H170, H110, B170, Q150, Q170 - What is the Difference? - Puget Custom Computers

Z170 is top of the line - For overclock - CPU, memory and Raid
H170 is high performance.
B170 is the budget

Megahertz07 said:

Z170, H170, H110, B170, Q150, Q170 - What is the Difference? - Puget Custom Computers

Z170 is top of the line - For overclock - CPU, memory and Raid
H170 is high performance.
B170 is the budget

Thank you, so the H170 is good enough for me since I don't need SLI also I won't overclock

AddRAM said:

You should be fine. :)

Post a manufacturers link to the board you want to get, we`ll look it over.

And the CPU you`ve decided on.

Asus H170 Pro Gaming: Access Denied

For the processor I was thinking the i5 6500 instead of the i5 6600 because I save around $25 but loose just 100 Mhz in speed so I don't see it as a huge downgrade.

Thanks in advance.