Similarities

• Both are 80+ Gold certified, indicating high efficiency (up to 90% at 50% load).
• Modular cabling design for easy installation and cable management.
• High-quality components, such as Japanese capacitors, for reliable performance and long lifespan.
• Both support multiple protection mechanisms, including overvoltage protection (OVP), undervoltage protection (UVP), overpower protection (OPP), and short-circuit protection (SCP).

Differences

1. Capacity: The EVGA SuperNOVA 1000 G5 has a higher capacity of 1000W, while the Corsair RM850x has an 850W capacity.
2. Form Factor: Both have the same ATX form factor, but the EVGA unit is slightly longer (170mm vs 160mm).
3. Efficiency: While both are 80+ Gold certified, the EVGA SuperNOVA 1000 G5 has a slightly higher efficiency rating at 50% load (90.5% vs 90% for the Corsair RM850x).
4. Ripple and Noise: The Corsair RM850x has a lower ripple and noise rating (50mV vs 60mV for the EVGA unit), indicating cleaner DC output.
5. Connectors: The EVGA SuperNOVA 1000 G5 has more connectors, including:
   • More SATA power connectors (10 vs 8 on the Corsair RM850x).
   • More PCIe power connectors (6 vs 4 on the Corsair RM850x).
   • An additional EPS connector (2 vs 1 on the Corsair RM850x).
6. Warranty: The EVGA SuperNOVA 1000 G5 has a longer warranty period of 10 years, while the Corsair RM850x has a 7-year warranty.
7. Price: The EVGA SuperNOVA 1000 G5 is generally more expensive than the Corsair RM850x.

Conclusion

If you need a high-capacity power supply with plenty of connectors and a long warranty period, the EVGA SuperNOVA 1000 G5 might be the better choice. However, if you're looking for a slightly more affordable option with excellent efficiency and low ripple and noise ratings, the Corsair RM850x is an excellent alternative.

Consider your system's power requirements and choose the one that best fits your needs:

• For most gaming systems with mid-to-high-end graphics cards, the Corsair RM850x should be sufficient.
• For more powerful systems with high-end graphics cards or multiple GPUs, the EVGA SuperNOVA 1000 G5 might be a better option.