Normally compatible with all motherboards with PCI Express slot

The greatly reduced lifespan of the Aorus is due to the TLC memory technology used. Optane, on the other hand, is designed for better latency and long life. A simple overview of what makes up the memory technology used can be found here: https://en.wikipedia.org/wiki/Flash_memory#Write_endurance For comparison, since it is not listed in the table: In terms of life expectancy, Optane is around SLC. However, exact figures would still have to be determined.

So that your question can possibly be answered, we have forwarded it directly to the community. This is because we unfortunately do not have an effective user experience with the product.

Yes, no problem.

The problem will be less the motherboard, which has separate slots according to ASUS, than the number of PCI-E lanes of the CPU. However, I did not notice any noticeable difference in my setup (same CPU generation) after installing this SSD.

I have one with a 1080ti. The graphics card works in PCI-e v3 8x in my Maximus VII Ranger and does not slow down. It has enough bandwidth

It should already work. However, your motherboard only supports configurations of 1 x16 or 2 x8. So it would divide your maximum theoretical performance of the graphics card into two. In the real world, the difference is not half (varies depending on the graphics card (estimate a loss of 10-20%)). If you don't want this and are planning to upgrade your CPU/motherboard soon anyway, I recommend looking for a motherboard with built-in m.2 support. This would be even faster and would not affect the graphics card.

Nothing about IOPS can be found on the manufacturer's website. However, at Tom's Hardware https://www.google.com/amp/s/www.tomshardware.com/amp/news/gigabyte-aorus-rgb-aic-nvme-ssd-specs,38990.html

Edit: Found out by accident, my motherboard doesn't support NVMe protocol...so not solvable for me (except with new mobo ^^)

It looks rather close to me.

Unfortunately, there is no information on this from the manufacturer. You would have to try it out.