A ton of questions about motherboards

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https://www.gigabyte.com/Comparison/Result/2?pids=6071,6072,6073,6074,6118

A couple of days ago I was comparing some boards on this website

I might have checked some reviews as well but sometimes they don't tell the whole story either so I found this more practical.

BUT I AM STILL CONFUSED, I don't see the point of high-end boards so these are my concerns:

1.- If two motherboards say they support RAM up to 4133 Mhz are they guarranted to work at those speeds? (assuming you get high-end RAM)

2.- Some boards include more DVI or display ports on the back panel. Can you give me a usecase for that? (I mean, if you purchase a +$200 motherboard I think you will be using a dGPU anyway)

3 AND MOST IMPORTANT. Audio

I see thay many motherboards share the exact same Realtek® ALC1220 codec. However, the gaming boards are marketed as "best boards in therms of audio"
Is that true?

Do Sound Blaster X-Fi MB5 and TI NE5532 operational amplifier make a difference?

or the difference is just the software? or it's just a gimmick?

Top-of-the-line motherboards have this:

Creative® Sound Core 3D chip

Support for Sound Blaster Recon3Di
TI Burr Brown® OPA2134 operational amplifier

Are those things worth it?

4.- now, DUAL LAN and killerLAN. Are they really better? Why would you need double LAN?

5.- Do you really need so many usb, sata ports?

6.- What about overclocking? Why some lower-end motherboards reach lower voltages for the same speed? Regardless of the silicon lottery.

7.- What about the extra software that comes with them? Does it really matter? or can i do the same with 3rd party applications? Is the BIos better?

You can provide other info if i forgot

thanks in advance
 
Solution
Certainly not. Those are overclocking frequencies and are not guarantied.

If you need to connect more monitors.

More advanced motherboard designs include audio circuity separation to reduce background noise from system components.

Certainly not. Those are overclocking frequencies and are not guarantied.

If you need to connect more monitors.

More advanced motherboard designs include audio circuity separation to reduce background noise from system components.

Redundancy. Additional possibilities like ethernet routing.

Depends on your use of PC. Somebody may need that.

Extra software doesn't really matter. BIOS might include some additional tuning capabilities.
 
Solution

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OK, thanks!! by the way what is cable routing?