NZXT C1000 ATX v3.1 PSU Review

Protection Features

OCP (Cold @ 27°C) 12V: 102.2A (122.69%), 12.104V
5V: 26.9A (122.27%), 5.027V
3.3V: 28.1A (127.73%), 3.329V
5VSB: 4.8A (160%), 5.014V
OCP (Hot @ 42°C) 12V: 101.6A (121.97%), 12.122V
5V: 26.7A (121.36%), 5.027V
3.3V: 26.6A (120.91%), 3.321V
5VSB: 4.7A (156.67%), 5.013V
OPP (Cold @ 27°C) 1219.26W (121.93%)
OPP (Hot @ 43°C) 1219.22W (121.92%)
OTP ✓ (145°C @ secondary side)
SCP 12V to Earth: ✓
5V to Earth: ✓
3.3V to Earth: ✓
5VSB to Earth: ✓
PWR_OK Proper operation
NLO
Fan Failure Protection
SIP Surge: MOV
Inrush: NTC Thermistor & Bypass relay

The OCP triggering points are lowly set under cold and hot conditions. That said, the difference between hot and cold triggering points should usually be more significant at 12V and 5V, but I suspect this is not the case because the cold triggering points are already low. OPP is also set low, but I would still like to see a notable difference between hot and cold triggering points, which are currently identical. Lastly, similar to the C1500, the C1000 has fan failure protection.

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

  1. 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)

  2. 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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