Epilogue
The NZXT C1000 achieves top overall performance and features quiet operation under light and moderate loads. You must push the PSU hard to force its fan to enter the 30-40 dBA zone. If a 1000W PSU delivers almost full power, PC parts that require such high power levels won’t remain silent since their fans will have to handle the increased thermal loads.
The load regulation is tight on all rails but 3.3V, which doesn’t matter so much eitherway, ripple suppression is good, the transient response is good on all rails, the PSU meets the ATX v3.1 transient response requirements, the hold-up time is super-extended, the build quality is good, and the vampire power is low. The average efficiency could be higher. Still, this is a Gold-certified unit, and its efficiency at the light and super-light loads is satisfactory. The APFC converter, which also significantly minimizes wasted energy, needs tuning for higher performance.
The C1000 is not affordable but offers top performance and high build quality. Under NZXT’s guidance, CWT used quality parts that will retain their good performance for a prolonged period, even under harsh operating conditions. Indeed, there are more affordable units with good performance to select from. Still, you don’t change the PSU frequently, so you can spend 20-30 dollars more to get the top-performing one to have an extended peace of mind and be as future-proof as it gets till NVIDIA decides to force a change again in GPU power delivery.
Before investing in a new power supply, read my Best ATX v3.x PSUs article to check all alternative PSU offerings. You help me a lot by using my affiliate links, which don’t increase the product’s price. I get a commission from Amazon every time you do it, which can make a difference for me, especially now that I am on my own, working exclusively for my media and not for someone else.
- Delivered full power at 47°C
- ATX v3.1 and PCIe 5.1 ready
- Top overall performance
- Efficient at light and super light-loads
- Efficient 5VSB rail
- Good build quality
- Good transient response
- Tight load regulation on all rails but 3.3V
- Good ripple suppression
- Super extended hold-up time
- Quiet operation at up to 790W loads
- Low vampire power
- Conservatively set OCPP and OPP triggering points
- Alternative Low Power Mode (ALPM) compatible
- FDB fan
- Fully modular
- Many cables and connectors, including a high-power one (12+4 pin, 600W)
- Long enough distance (145mm) between the peripheral connectors
- Not so affordable
- I want to see a larger difference in OCP and OPP triggering points between hot and cold conditions
- APFC converter needs tuning for higher PF readings
- The 3.3V rail needs tighter load regulation
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
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
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).
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？
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.
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)
cables are the same, the 12+4pin connector cable. Hold-up time is lower in ATX v3.1 standard
Would this be a better choice than the Super Flower VII Gold?
Hi! Thanks for your reply! I appreciate it!
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!
I haven’t checked it so far, SP 12.
Hi! Thanks for your reply! I appreciate it!