Ocypus Iota P1000 review verdict: a quiet 1000 W PSU with native ATX 3.1
TechPowerUp calls it a compelling budget pick, praising its ripple control and 600 W 12V-2x6 cable, with cable losses and minor-rail tuning the weak spots.
TechPowerUp published its review of the Ocypus Iota P1000 on October 30, 2026, calling the 1000 W power supply a compelling budget pick. The reviewers praised its native ATX 3.1 support, its 600 W 12V-2x6 GPU cable, strong ripple suppression and unusually quiet operation for a 1 kW unit, while cable losses and minor-rail tuning kept it from a perfect result.
What the Iota P1000 is
Ocypus is a newcomer to PC power supplies, and the Iota line is its flagship range, running from 750 W to 1200 W. The P1000 is rated 80 Plus Gold and built on an Andyson platform, with a full-bridge LLC primary, synchronous rectification and DC-to-DC converters for the 3.3 V and 5 V rails. Every electrolytic capacitor comes from Nippon Chemi-Con or Rubycon, and cooling is handled by a Hong Hua fluid-dynamic-bearing fan.
The unit can deliver its full 1000 W on the 12 V rail, while the 3.3 V and 5 V rails share a combined 100 W, low compared with similar units. A rear switch enables semi-passive mode, keeping the fan stopped below about 500 W. At 140 mm deep, it is short enough for compact ATX cases.
A second opinion
Russian site 3DNews reached a similar conclusion in August. Its testing found efficiency comfortably above the Gold standard, rock-solid voltage regulation up to its 800 W test limit, ripple of no more than 12 mV on the 12 V rail, and fan speed under 1000 rpm up to 800 W. Its main complaint was cabling: each PCIe lead carries only one 6+2 plug, so a three-connector graphics card plus a board needing extra CPU power may require a splitter.
Why it matters for builders
A 1000 W Gold unit with a native 600 W 12V-2x6 cable covers high-end cards on a single connector, and quiet operation matters for gaming rigs that sit on a desk. With GPU and memory prices climbing, saving money on the PSU without dropping to lower-grade internals is a reasonable trade. In Thailand, retailer JIB lists the black Iota P1000, so it is already on sale in parts of the region.
Source: TechPowerUp; 3DNews; JIB.
