PlayStation 4 goes x86: 8-core CPU, 8GB of RAM, and a hard drive | Extremetech
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Original (2013) PS4 | TechRadar
Microsoft Xbox One X vs Sony PlayStation 4 Pro: Which is best? | Stuff
Sony's PlayStation 4 Pro is a perfect way to show off your 4K TV | Engadget
PlayStation 4 Slim 1TB Console Black + Ghost of Tsushima PS4 - PS4 Console & Dualshock 4 Controller included - Ghost of Tsushima Included - 8GB RAM 1TB HDD - ESRB Rated M (Mature 17+) - Play onlin - Walmart.com
PS4 devs can only use 4.5GB of system's 8GB RAM - Report | GamesIndustry.biz
The Xbox One and PS4 share similar specs, but the devil's in the details | Ars Technica