Best ATX Power Supplies Around 800 Watts for Gaming PCs
When shopping for an ATX power supply around 800 watts, aim for efficiency, modularity, and stable +12V output for gaming builds. This guide highlights five solid options suitable for mid-to-high-end gaming PCs, workstations, and enthusiast rigs. The top picks are best for users who need reliable power delivery, decent headroom for GPUs, and relatively quiet operation. Ideal buyers include mid-tower builders, compact build enthusiasts, and anyone upgrading from a lower-wattage unit who wants future-proofing with ATX 3.1 and PCIe 5.1 readiness where applicable.
Summary of selected products
| Product | Wattage | Modularity | Key Benefit |
|---|---|---|---|
| Apevia ATX-JP800W Jupiter 800W | 800W | Non-modular | Solid budget-friendly option with haswell/SLI support |
| 800W Power Supply 80 Plus Gold PSU (T.F.SKYWINDINTL) | 800W | Non-modular | High efficiency up to 87%+; compact ATX form factor |
| MSI MAG A750GL | 750W | Fully modular | ATX 3.1 and PCIe 5.1 ready; 10-year warranty |
| SKYLZOR 850W Fully Modular | 850W | Fully modular | ATX 3.1 and PCIe 5.1 ready; dragon-pattern cables |
| NZXT C850 Gold Core | 850W | Fully modular | Cybenetics Platinum efficiency; zero RPM option |
Apevia ATX-JP800W Jupiter 800W
Best for budget-minded builders who still want a trusted 800W supply. This unit delivers 800W with a single 12V rail, 3-year warranty, and basic 80 Plus Bronze efficiency. It includes multiple connectors for typical gaming builds: PCIe, SATA, peripheral, and a 20/24-pin main power. Caution: non-modular design adds cable clutter in tighter cases.
- Best for budget builds needing straightforward power delivery.
- Better for mid-tower or standard chassis with adequate cable management.
800W Power Supply 80 Plus Gold PSU (T.F.SKYWINDINTL)
Best for users who want higher efficiency and quiet operation. This 800W Gold-rated unit is non-modular with a 120mm fan and 100% Japanese capacitors for reliability. It supports mid-range to higher-end builds and offers solid continuous power at 800W. Caution: non-modular design means more cable routing work inside the case.
- Best for efficiency-focused builds on a budget.
- Better for mid-tower PCs where some cable management is acceptable.
MSI MAG A750GL
Best for modern gaming systems requiring PCIe 5.1 readiness and modular cables. The MSI MAG A750GL is 750W, fully modular, and features an 80 Plus Gold rating with a 10-year warranty. It is a good match for high-end GPUs and CPUs while allowing clean cable management. Caution: wattage is slightly below some multi-GPU configurations if future upgrades push power needs beyond 800W.
- Choose this if you plan to upgrade to PCIe 5.1 GPUs.
- Avoid if you anticipate multi-GPU setups that exceed 800W total draw.
SKYLZOR 850W Fully Modular
Best for enthusiasts who want full modularity and ATX 3.1 compatibility with PCIe 5.1. The 850W capacity provides headroom for demanding GPUs and overclocked CPUs. It includes a dual-color PCIe 5.1 cable and dragon-pattern aesthetics. Caution: price may reflect premium modular design compared to non-modular options.
- Best for clean builds with robust PCIe 5.1 support.
- Avoid if you need a compact non-modular budget option.
NZXT C850 Gold Core
Best for premium builds aiming for quiet operation and cutting-edge efficiency. The C850 Gold Core features 80 Plus Gold efficiency and Cybenetics Platinum certification with a zero-RPM fan mode. It is fully modular and PCIe 5.1 capable, suitable for future-proof gaming rigs. Caution: higher cost compared to basic 800W units.
- Choose this if silent operation and future PCIe 5.1 support matter most.
- Avoid if strict budget limits are present and you don’t need premium features.
Buying Guide
What should you consider when selecting an 800W-class ATX power supply?
- Efficiency and certifications: Look for 80 Plus Gold or better for lower energy use and heat.
- Modularity: Fully modular cables simplify cable management but may cost more; non-modular units are usually cheaper but can hinder airflow.
- ATX 3.1 and PCIe 5.1 readiness: If you plan to use next-gen GPUs or power excursions, prefer ATX 3.1 compliant units with PCIe 5.1 cables.
- Wattage headroom: For a single high-end GPU, 800W often suffices. If you plan multi-GPU setups or heavy overclocking, consider higher wattage or a robust 800W with a generous 12V rail.
- Cooling and noise: Look for larger 120mm or 135mm fans and features like zero-RPM mode for quiet builds.
- Cable quality and length: Fully modular units offer tidier builds; consider cable lengths for your case size and layout.
FAQ
- What does 80 Plus Gold mean for my build? It indicates higher energy efficiency, reducing heat and electricity use under load compared to Bronze or Low-tier ratings.
- Is modularity worth it for a compact case? Yes, modular cables help with airflow and cable management in tight spaces, though they add to cost.
- Can these 800W units support dual GPUs? Some models can, but verify total system draw and ensure the PSU has enough PCIe connectors and amperage on the +12V rails.
- What is ATX 3.1? It’s a standard that supports higher power stability and improved GPU power delivery, helpful for future GPUs.
- Is silence a priority for a gaming PC? If so, consider models with large, efficient fans, zero-RPM modes, and high-quality capacitors.
- Do I need a warranty? Yes; a longer warranty (e.g., 10 years) indicates better confidence in long-term reliability.