As the title says, tier 2 intel on amulet is not increasing the usable memory for skills... that is the primary purpose of enchanting it in my build.
without the increased intel:
https://imgur.com/327lYUg
memory without increased intel:
https://imgur.com/rseU3Qn
increased intel:
https://imgur.com/idQFub6
memory with increased intel:
https://imgur.com/FAoxLcl