I'm currently using a Ryzen 7 5800X with an RTX 5070 and playing PUBG at 3440×1440. In busy areas and cities, GPU usage drops to around 40% and performance falls to roughly 120 FPS, while open areas can reach about 300 FPS. Would moving to a Ryzen 7 5800X3D noticeably improve the frame rate and 1% lows? I could sell my 5800X for about $150 and buy a 5800X3D for around $300, making the upgrade cost roughly $150. Is that worthwhile?
2 Answers
The low GPU usage strongly suggests you’re CPU-limited in those situations. The 5800X3D should improve PUBG performance, especially frame-time consistency and 1% lows, but the size of the gain depends on your settings and how CPU-bound each scene is. A typical improvement over the 5800X is closer to around 15% in CPU-limited games, not a guaranteed doubling of FPS.
Before spending the money, check CPU usage by individual core rather than relying only on total CPU usage. Also make sure your motherboard BIOS supports the 5800X3D before installing it. If you’re happy with your current monitor and mainly want higher competitive FPS, the CPU upgrade makes more sense than changing displays; otherwise, a 1440p monitor upgrade could provide a more noticeable overall improvement.

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