I was wondering about this since card prices went up and with the crazy bandwidth of the One X it seemed like it could be competitive. I'd like to see what someone with a scorpio dev kit could manage as a proof of concept. Though the dev kit has 4 more CUs than retail.
All Scorpio APUs have 44 CUs etched on the die, but 4 of them are disabled "just in case" (for redundancy purposes in case some CUs are defective).
http://www.eurogamer.net/articles/digitalfoundry-2018-ps4-pro-and-xbox-one-x-processors-comparedDev kits probably have higher-grade chips (silicon lottery) with 44 functional CUs.