NZXT C1000 ATX v3.1 PSU Review

Box & Bundle

The box has a clean design; on its face, you will find a photo of the PSU with the fan grille and modular panel in sight. The ATX v3.1, warranty, and 80 Plus badges are in the bottom-left corner. The box provides adequate protection since foam spacers fully protect the PSU at its internals. There is also a pouch for the vast amount of modular cables, which will be helpful since you most likely won’t use all of them.

Product Photos

The exterior design is simple and nice. The fan grille has many relatively large perforations that don’t restrict airflow. The grille could be even less restrictive to further boost the fan’s performance. On the PSU’s front side are two switches, one for the main power and the other for toggling on/off the fan’s passive operation at light loads.

The modular panel around the back hosts twelve sockets, including a native 12V-2×6. A warning on this side states that you should not use cables from other power supplies since there is no standard pinout for the PSU modular panels, which is a great shame if you ask me. At some point, all manufacturers and brands should come down to a standardized pinout. This looks impossible, but hopefully, it will be in the future at some point.

Cables

Modular Cables
Description Cable Count Connector Count (Total) Gauge In Cable Capacitors
ATX connector 20+4 pin (600mm) 1 1 16-20AWG No
4+4 pin EPS12V (700mm) 1 1 16AWG No
8-pin EPS12V (700mm) 1 1 16AWG No
6+2 pin PCIe (650mm) 3 3 16-18AWG No
12+4 pin PCIe (645mm) (600W) 1 1 16-24AWG No
SATA (500mm+145mm+145mm+145mm) 3 12 18AWG No
4-pin Molex (500mm+145mm+145mm+145mm) 1 4 18AWG No
AC Power Cord (1415mm) – C13 coupler 1 1 14AWG

The ATX cable is long enough, at 600m. The EPS cables are also long, at 700mm, and all PCIe cables are a bit shorter, at 650mm. The number of peripheral connectors is high, and the distance between them is adequate, at 145mm. Lastly, all cables have the standard round shame and are painted black to be stealth inside a chassis with a dark-colored interior.

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12 thoughts on “NZXT C1000 ATX v3.1 PSU Review

  1. Hello, great review as always.
    Can you please tell me what is the difference between labeling:
    16AWG vs 16-24AWG
    (first have one number and second two) ?
    I couldn’t find an answer
    Thanks in advance

  2. Hello,

    I have already returned the Corsair RM1000x PSU.
    Now I am the owner of the PSU NZXT C1000 ATX v3.1 EAN 5056547204710, Manufacturer no. PA-0G2BB-EU.
    Different PSU, but the problems with standby are about the same.

    When the PC power supply is plugged in, the standby time is approximately 22.0 W (at 238 V). In this case, the leakage current is 0.145 A.
    When the power supply is turned off by a switch on the PC power supply, the consumption drops to 10.2 W (leakage current 0.070A), but the power supply does not completely shut down.

    The load for the PSU is a motherboard with a processor, RAM, M.2 SSD and fans.

    My energy meter (Brennenstul EM240 DE3698) is not completely accurate, the deviation is 1 volt (0.5% error) when measuring a voltage of about 240 volts. Its verification in a load in the form of a LED lamp (HG10556B) for 470 lm with a power of 4.2 watts is 100% the same and is 4.2 watts. Voltage control was carried out with fairly accurate BRYMEN BM235 and KAIWEETS HT206D multimeters.

    We are not talking about 0.1 watts, as stated in the Cybenetics certificate that Standby Power Consumption is equal to 0.0691W (230V), but 22 watts! That is, the excess is more than 200 times.
    In 2023, the following tightening came into force Commission Regulation (EU) 2023/826 of 17 April 2023 from 2025, devices must not consume more than 0.5 Watts in standby or in off mode.

    I have a question, how does the manufacturer comply with the current certificate?
    Does any authority control the import of such products into the European Union?

    Best regards

    1. First of all, vampire power is measured with the PSU itself, NOT connected to anything else? Vampire power is the power that the PSU’s internal circuits drawn while it is in standby (only 5VSB).

  3. Hello I would like to know how to choose between NZXT C1000 ATX3.1 and CORSAIR RM1000X ATX3.1 and MSI MPG A1000G ATX3.1 In your opinion these three are better?

  4. Hello,

    In a previous article you’ve mentioned that “ATX v3.1 PSUs are NOT ATX v3.0 because of the lower hold-up time”. However from my research, most manufacturers describe that the new spec is backward compatible. Maybe they are referring to connector compatibility, but given the results for this PSU, which provides hold up time around 30 ms, do you think that it will be possible to pair it with existing ATX3.0 GPUS until upgrading to NVidia 50x series or similar?

    Thanks in advance for your response.

    1. I don’t know to what they refer, but the fact is that the ATX v3.0 spec is tougher in hold-up time. Also this PSU yes, you can use it with any upcoming GPU, since the cable remains exactly the same (12VHPWR or 12V-2×6)

  5. Very impressive work! Thank you very much! 🙂

    I was wondering if you heard anything about the Straight Power 12 from be quiet? I have barely heard about this unit and I was hesitating between the Straight Power 12, a Corsair RMx/e or a NZXT C Gold for an RTX 4070 ti Super + i5-14600K system (850 – 1000W range).

    Thank you againt!

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