Fifth, I don't really see a need for a large NVMe OS drive over having larger SSD storage. If you plan to record game footage in high bitrate and edit on the same rig I still recommend having the large SATA SSD in the rig. As somebody who does just this there have been times where I wished I had bigger than 512GB SSDs in my rig for footage record drive and scratch. I recommend a good balance, maybe a 4TB EVO SATA and a 1TB 960 EVO for the boot. I do not recommend a RAID for the setup at all (in case that was your intention for the dual 4TB SSDs). Swinging back to the second point, 99% of applications you won't notice a difference in raw speeds differing between the NVMe and SATA SSDs. Most notably the difference lies in IOPS and that's what Optane drives are going for. Thing is, until we have an OS designed for these high speeds the difference is nill. This is why I still rock an older gen 2 4x PCI-E SSD and I wish I opted for a higher capacity M.2 SATA 850 EVO instead. I say this not only as an enthusiast but also a crappy content creator.
Yeah agreed. I'd say stick with a 1TB evo as well, I put the 2TB pro in because your original build looked like you wanted a ton of storage and didn't care about price
A note though re Optane, you'll have to buy a new mobo/cpu if you go with those choices and want to use optane when it comes out - X99 chipset isn't supported and neither is skylake according to intel's site.
Sixth, RAM speed. No. For large amounts of RAM do not exceed 2400 or you could have stability issues. Actually for any rig I don't recommend faster unless being dealt with by an experienced user who has time to tweak settings to stabilize the machine. To top it off, there is 0 difference
We're running 16+ workstations here all with 3200mhz ram installed since our upgrade like 9 months ago, zero issues with any of them so far so I dunno that I'd be worried about exceeding 2400 tbh that said, for gaming performance yeah there's no real benefit to upping the speed. I wouldn't say literally 0 because that's not right, but negligible yes.
If the 2400Mhz sets are cheaper by a significant amount then definitely stick with that, but if it's a $25 difference then IMO may as well stick with the faster set (especially if you're looking to future-proof this build).