Best 4K Gaming PC Build Under $3,400
Updated June 23, 2026 · every part compatibility-checked, priced from live Amazon/Newegg listings, and picked to land at or under $3,400. Prices move daily — the total below is live.
A 4K flagship that spends where 4K actually demands it — GPU first, with a platform that will carry the next upgrade too.
The parts — $3247.09 all-in
- CPUAMD Ryzen 7 7800X3D8C/16T · 5 GHz boost · iGPU$348.99Amazon ↗Newegg ↗
- Graphics cardROG Astral GeForce RTX 5080 OC Edition16GB VRAM · 358mm long$1949.99Amazon ↗Newegg ↗
- MotherboardASUS PRIME B850M-A WIFI-CSMRAM ≤8000$179.99Amazon ↗Newegg ↗
- MemoryT-Force VulcanDDR5-5200 · CL40 · 2×8GB (16GB)$239.99Amazon ↗Newegg ↗
- StorageADATA LEGEND 7102TB · PCIe 3.0 NVMe$219.99Amazon ↗Newegg ↗
- Power supplyThermaltake Toughpower GF A31050W · ATX$169.99Amazon ↗Newegg ↗
- Casebe quiet! Light Base 600 DXfits GPU ≤400mm · cooler ≤170mm$111.90Amazon ↗Newegg ↗
- CPU coolerCooler Master Hyper 212 3DHPAir tower · 158mm tall$26.25Amazon ↗Newegg ↗
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