X99 onboard raid controller question

Looking to upgrade to X99. I plan to raid 5 a disk array for (5) 1tb drives for parity reasons. I have always heard that raid cards are better than onboard raid controllers.

Is that still true when using X99? if so, how much difference?
Is a raid card a must when not looking for performance boost - only needing parity?
If onboard is out of the question - what is a good raid card you recommend that can handle 5 drives in raid 5?

thanks for the help!

I'm personally not sure if current onboard parity raid has improved over the years. But if you're not looking for performance you should check out Snapraid or Flexraid. The offer many advantages over standard raid. Raid 5 isn't safe, I wouldn't use it. If more ports are needed, The IBM M1015 or cheap LSI HBAs are a popular choice for best bang for buck. Both can be had on ebay for under a hundred bucks.

I haven't tried RAID 5 myself, but I recall reading that chipset RAID 5 is compute intensive and will take a performance hit vs dedicated hardware.
RAID 0 and 1 on the other hand are simple enough that the chipset has no performance issues. I've been using chipset RAID 1 on systems over the last four generations.

If performance isn't your primary need, you just want to have some parity, and you're using desktop-grade HDD, then YES, use the chipset RAID 5 feature.

I use it to store backups on 2 servers, 1 local with 4 HDDs, and 1 remote server with 6 HDDs, as a redundancy to my cloud backup.

Both servers use the chipset RAID5 with really old 1TB drives, after 4 years I only had 1 drive failure a few months ago, and my mate just pulled out the drive and replaced it for me.