Macbook Pro

Your Mac can run MacOS 10.13 High Sierra as the latest version of MacOS that Apple supports on that model, 13-in or 15-in or 17-in.

The graphics chips are soldered to the mainboard and NOT upgradeable.

From: https://support.apple.com/kb/SP777?locale=en_US

Mac Hardware Requirements

For details about your Mac model, click the Apple icon at the top

left of your screen and choose About This Mac. These Mac models are

compatible with macOS Mojave:

• MacBook (Early 2015 or newer)
• MacBook Air (Mid 2012 or newer)
• MacBook Pro (Mid 2012 or newer)
• Mac mini (Late 2012 or newer)
• iMac (Late 2012 or newer)
• iMac Pro (2017)
• Mac Pro (Late 2013; Mid 2010 and Mid 2012 models with recommended Metal-capable graphics cards)

.