What does 80 Plus Platinum mean?

80 Plus measures how efficiently a PSU turns wall power into clean power for your PC, which affects heat and running costs. Platinum is premium and very efficient. For most gaming builds, a reputable 80 Plus Gold unit is the popular choice.

Is an 80 Plus Platinum PSU worth it?

Higher ratings like Platinum and Titanium cost more for small efficiency gains, so they suit premium or always-on systems. Either way, brand reputation and the warranty matter as much as the badge.

What wattage should I choose at this rating?

Pick the wattage around your graphics card: roughly 650 to 750W for mid-range, 850 to 1000W for high-end, and 1000W and up for the very top cards. Make sure the unit has the right connectors, including a 12V-2x6 plug for current Nvidia cards, and leave a little headroom.