Ocypus entered the computer power supply market with a range of devices of varying power and energy efficiency classes. The Iota P1000 model belongs to the flagship series, which includes power supplies with a power of 750 to 1,200 W.
⇡#Technical characteristics, design, price
The hero of the review claims to have an efficiency level of 80 PLUS Gold and complies with the ATX 3.1 standard. High energy efficiency allows the power supply to be cooled passively at consumer power below 500 W, if the corresponding mode is activated by the switch on the rear panel. The PSU can deliver a full power of 1 kW on the 12 V line, but the small lines are limited to a total power of 100 W – lower than all similar devices that we have tested in recent years. The Iota P1000 case has a small depth of 140 mm.
The new 12V-2×6, configured for 600 W, is used here as a power connector for 12+4 video cards. There are only five universal eight-pin connectors, as with most new-generation power supplies.
The insulation of the complete cables imitates individual braiding. The cross-section of the conductors in the 12V-2×6 cable is 16AWG, in the others – 18AWG. Each of the cables for connecting “old” video cards has only one 6+2 plug, so an accelerator with three inputs cannot be connected to the PSU simultaneously with the motherboard, which requires additional power, without a splitter.
The minimum cost of the device during the review was 12,348 rubles, which is inexpensive for a “golden” power supply with a capacity of 1 kW.
⇡#Internal organization
The power supply is built on the Andyson P32A platform, which is rare but not inferior to its more common counterparts in terms of its main features.
The input circuit of the power supply is equipped with a fuse, a two-stage electromagnetic interference filter, a varistor for protection against pulse overvoltage and a thermistor paired with a relay to limit starting currents. Power factor compensation is, of course, active.
The 12V main line converter is a full-bridge topology with LLC. Synchronous rectifiers operate on the secondary side. The 3.3V and 5V small lines are formed from 12V using DC-DC converters.
All electrolytic capacitors in the Ocypus Iota P1000 are manufactured by Japanese companies Nippon Chemi-Con and Rubycon.
The insides of the power supply are blown by a fan on a Hong Hua HA1225M12F-Z hydrodynamic bearing, which is often found in “gold” category devices.
⇡#Testing methodology
The testing methodology adopted in 3DNews is described in a separate article, which is recommended for reading to understand the design of computer power supplies and their most important characteristics. Refer to it to find out why it is needed and how this or that component mentioned in the review works, and how to interpret the test results.
⇡#Test results
The efficiency of the Ocypus Iota P1000 exceeds the requirements of the 80 PLUS Gold standard with a reserve under the dominant load on the 12 V line. But even under the load on the small 3.3 and 5 V lines, the energy efficiency tends to the “golden” level, which does not happen often.
The fan rotation speed under load up to 800 W does not exceed 1000 rpm, and in semi-passive mode the fan starts to rotate only when the total power of consumers is 500 W.
All of the main power supply lines (12, 5 and 3.3 V) demonstrated reference voltage stability in the power range available to the load bench up to 800 W. Only on the 3.3 V line the deviation lies within 1–2% of the nominal value, which, of course, is also an excellent result.
The pulsation range on the 12 and 5 V lines does not exceed 12 and 14 mV, respectively. These are negligible values compared to the 120 and 50 mV allowed by the ATX standard.
⇡#Conclusions
The Ocypus Iota P1000 is a typical representative of the cohort of “golden” ATX 3.0 power supplies. The device has a “golden” efficiency (even under load on small lines) and provides impeccable voltage stabilization, the pulsation amplitude under load is more than acceptable. The only thing you can find fault with is that the 6+2 power connectors are not enough to power some combinations of the motherboard and video card without additional splitters.