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Fonte de alimentação para PC gamer: como escolher em 2026

A fonte de alimentação é subestimada, mas é crucial para a estabilidade e segurança do PC. Veja o que você precisa saber.

What wattage PSU for my GPU?

Simple rule: add GPU + CPU TDP, then add a 20–25% margin. Example: RTX 4060 (115W) + i5-12400F (65W) = 180W → 450–500W PSU sufficient.

RTX 4070 (200W) + i7-13700K (125W) = 325W → 650–750W recommended.

80+ certification: which one to choose?

80+ Bronze (82–85% efficiency): sufficient for most gaming builds.

80+ Gold (87–92%): recommended for builds over €1,000.

Example PCs on Amazon related to this guide

Three desktops then three laptops from the PC4Games catalog in a range that fits the topic — each link opens Amazon (affiliate).

Desktop PCs — top picks

Pick 13.950 – 8.150 BRL

CyberpowerPC Luxe PC Gamer — Intel Core i9, 32 Go RAM, 1 To NVMe SSD, Windows 11

RTX 5070 · i9-12900KF · 32 GB RAM

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Pick 23.950 – 8.150 BRL

SYSTEMTREFF PC Gamer High-End — AMD Ryzen 7 7800X3D, NVIDIA RTX 5070 12 Go, 32 Go DDR5, 1 To NVMe, Windows 11

RTX 5070 · Ryzen 7 7800X3D · 32 GB RAM

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Pick 33.950 – 8.150 BRL

CyberpowerPC Luxe PC Gamer — Intel Core i9-12900KF, NVIDIA RTX 5070 Ti 16 Go, 32 Go RAM, 1 To NVMe SSD, Windows 11

RTX 5070 Ti · i9-12900KF · 32 GB RAM

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Gaming laptops

Pick 13.950 – 8.150 BRL

MSI Katana 15 HX B14WGK-018FR — Intel Core i7, GeForce RTX 5070, 16 Go RAM, 1 To SSD

RTX 5070 · i7-14650HX · 16 GB RAM

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Pick 23.950 – 8.150 BRL

Lenovo Legion 5 15IRX10 — Intel Core i7, GeForce RTX 5060, 16 Go RAM, 1 To SSD

RTX 5060 · i7-14650HX · 16 GB RAM

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Pick 33.950 – 8.150 BRL

Acer Nitro AG15-71P-771W — Intel Core i7-13620H, GeForce RTX 4050, 16 Go RAM, 512 Go SSD

RTX 4050 · i7-13620H · 16 GB RAM

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