Hardware Spec Index

Novexa PW-8639 Ultra 650W 80 PLUS Gold ATX 3.0 Power Supply

Power Supplies · Novexa · SKU PW8639-ULTRA · Released 2022 · Updated 2026-10-25

Key facts

Benchmark index1,304 (Power Supplies scale)
Category rank#922
Street price$69
Power650 W (rated)
Performance per dollar18.90
Released2022

Specifications

BrandNovexa
ModelNovexa PW-8639 Ultra
Rated output650 W continuous
Efficiency80 PLUS Gold (90% at 50% load, 115 V)
StandardATX 3.0 / PCIe CEM 5.0
GPU power1× 12VHPWR (600 W)
PCIe 8-pin1×
Form factorATX
ModularityFully modular
Fan135 mm fluid dynamic bearing, zero-RPM mode
Hold-up time≥ 17 ms
ProtectionsOCP, OVP, UVP, OPP, OTP, SCP
Warranty7 years

Related guides

80 PLUS Efficiency Ratings ExplainedATX 3.1 Power Supplies and the 12V-2x6 Connector

Similar Power Supplies

ModelBenchmarkPriceCompare
Teralux PW-4443 XT 750W 80 PLUS Gold ATX Power Supply1,004$49Compare
Novexa PW-8457 Prime 1300W 80 PLUS Titanium ATX Power Supply2,450$269Compare
Caldera PW-6265 Core 650W 80 PLUS Bronze ATX 3.0 Power Supply1,231$69Compare
Teralux PW-9230 SE 650W 80 PLUS Gold ATX Power Supply1,417$79Compare
Vantrel PW-2411 Ultra 1300W 80 PLUS Gold ATX 3.0 Power Supply2,643$289Compare
Zephyra PW-1595 Ultra 1300W 80 PLUS Titanium ATX Power Supply2,541$319Compare

All Power Supplies · JSON

Cite this page: Hardware Spec Index, “Novexa PW-8639 Ultra 650W 80 PLUS Gold ATX 3.0 Power Supply”, https://vextor7.com/item/4254748 (accessed 2026-10-25).