nguyenhm16

I have Keychron K2 and K8. They both look higher/talker. The K3 is a low profile board. 

QLC drives like the Samsung QVO drives don't have particularly high write endurance nor are they particularly fast (hidden by an SLC or DRAM cache). Any sort of parity RAID configuration will chew through them in fairly short order.

A better deal would be to buy lightly used retired enterprise drives if you're intending to RAID them. They have much greater endurance, more sustained throughput, power loss protection (capacitors to provide power to finish out acknowledged writes in the even of a power outage) , and are suited for use RAID array. For example, I've bought a ton of 1.6tb Intel DC S3610s for anywhere from $130 to $210 each. Some were Intel retail drives, some were HP OEMs. All had 99% to 100% of life left according to the respective Intel or HP utility. 

She should commiserate with Bobby Tables:
https://xkcd.com/327/

aieronimo said:

dempson said:

The listed models have one feature in common: all have a Skylake or newer processor.

Skylake adds hardware encode/decode support for HEVC, so this might just be a case of the Sidecar feature being implemented with HEVC rather than H.264 to reduce bandwidth requirements or allow a higher frame rate. Older Mac models would have to do HEVC encode in software, so enabling the workaround might impose a significant CPU performance load when the display is rapidly changing.

I have a late 2015 iMac 27-inch, which is listed as one of the supported models for Sidecar, and I am pretty sure that it does not have HEVC encode/decode in hardware.  I think hardware support for HEVC encode/decode started with the 2017 iMac.

According to everymac, 2015 iMacs use 5th (21.5") or 6th (27") gen CPUs, which do have Quick Sync:
https://everymac.com/systems/apple/imac/specs/imac-core-i5-2.8-21-inch-aluminum-late-2015-specs.html
https://ark.intel.com/content/www/us/en/ark/products/87714/intel-core-i5-5575r-processor-4m-cache-up-to-3-30-ghz.html

https://everymac.com/systems/apple/imac/specs/imac-core-i5-3.2-27-inch-aluminum-retina-5k-late-2015-specs.html
https://ark.intel.com/content/www/us/en/ark/products/88184/intel-core-i5-6500-processor-6m-cache-up-to-3-60-ghz.html

They gotta charge for CarPlay, because who'd spend $2k for the factory nav when it's "free" with CarPlay?