Budget 650-700$ or more reliably 4000 to 5500 RMB
Resolution 1080p 144Hz FreeSync
Games / Settings Desired: High-Ultra settings; Game list: Dark Souls III, Black Desert Online, Guild Wars 2, WoW Legion and at least 1-2 expansions afterwards, Dragon Age: Inquisition; would be nice to be able to run any upcoming MMOs on medium-high for a while;
No intense software besides gaming.
Country: Beijing, China. Will be ordering from JingDong (can be googled, I cannot post links)
Parts that can be reused: none.
Do you need an OS?: no.
Do you need peripherals?: no.

My current system is a Lenovo Ideapad Y500 laptop with i7 3630QM, 8GB DDR3 RAM and 2xGT650M in SLI. I'm looking for a significant upgrade in FPS in the titles listed. I would strongly prefer an AMD GPU due to my FreeSync 144Hz monitor. There are RX570 and RX580 cards available at reasonable prices in a local store. I hope to get as much FPS as possible to actually make use of the high refresh rate. Don't know if it will be possible at higher settings with this budget. Any advice is welcome!