My laptop is an HP Envy. I played in beta for up to 12 hours in a row some days and had no troubles. I set the settings to maximum and went in and tweaked some things to help my performance a bit. Doing this, I had optimal quality with no extreme strain on my laptop aside from the temperature rising a bit high. If I was going to play for a long time I would prop my computer on an ice and make sure the fan vents were not blocked. I could do this because I have a wireless keyboard, mouse, and ps3 controller that I was using... My computer was just resting next to my TV connected through a HDMI cable. The ice pack thing is completely unnecessary, just an additional precaution for long term use ^^.
check out this guide: http://www.reddit.com/r/ffxiv/comments/1jkm9n/lunas_guide_to_optimizing_low_end_system_for_arr/
If you set the settings to max, then follow the tweaks you will get a score of ~2400. Which is "standard." Low to some people, but still.... when I played in beta, everything was beautiful, and I had 0 problems.
It uses Intel HD
OS Name Microsoft Windows 8
Version 6.2.9200 Build 9200
OS Manufacturer Microsoft Corporation
System Manufacturer Hewlett-Packard
System Model HP ENVY m4 Notebook PC
System Type x64-based PC Processor Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz
, 2201 Mhz, 4 Core(s), 8 Logical Installed Physical Memory (RAM) 8.00 GB
I've highlighted some things that you may also want to look for in you laptop if you choose to go that route. These things will also make a difference in your game play. The graphics card isn't working solo to run this game for you ^^