The cheapest graphics card you can play it on is an AMD Radeon HD 6870. An Intel Core i3-2100 CPU is required at a minimum to run Sword Art Online Re: Hollow Fragment. Sword Art Online Re: Hollow Fragment system requirements state that you will need at least 4 GB of RAM. In terms of game file size, you will need at least 30 GB of free disk space available.
Sword Art Online Re: Hollow Fragment will run on PC system with Windows 7 64-bit and upwards.
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