NZXT C750 Gold Power Supply Review

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Any gaming system that wants to operate at a higher level must have proper power management and distribution. With the C series, NZXT’s new line of PSU gear, they are moving in the right path. We’ll go through what makes the NZXT C750 Gold Power Supply the best option for future generations in our assessment.

A top-performing sector for the gaming community is NZXT. They are highly renowned throughout the world for their premium gaming accessories and peripherals. Around the world, professional gamers use some of their items.

The truth is that even a contemporary workstation for solving arithmetic problems, watching videos, or working on scientific projects typically uses 400–500 watts. A system with a top-end AMD Threadripper/EPYC or Core i7/i9 will need roughly 350 W, or “from the socket,” if your computer performs most of its computations on the CPU. Depending on the graphics card model, the usual consumption in PCs with three GPUs can be close to 600W. It is unlikely to make sense to pay too much for a power supply that will only be 600-900 W ideal for such installations.

Brands like NZXT, CoolerMaster, and Thermaltake no longer produce or develop power supplies in today’s globalized society; instead, they use the production facilities of Seasonic, FSP, or Delta, and no one will ever disclose in advance which platform this or another line of power supplies is intended for. The “80 Plus” type of accreditation given to this power supply is the only option for selecting a power supply in terms of quality. Cheap Chinese do not even receive a silver medal, therefore in an effort to sell them, a new “80 Plus” certificate without the prefix “Silver,” “Gold,” or “Platinum” was produced specifically for them.

With that, let’s get started.

NZXT C750 Gold Power Supply 2

NZXT C750 Gold Power Supply Specs & Performance

The Seasonic Focus Plus Gold platform, which the NZXT C750 Gold Power Supply we’re examining is based on, has the capability to turn off the fan at low load, making the power supply completely silent. The fan kicks on when the load increases to 350 W to prevent component overheating, and the power supply returns to quiet mode when the load lowers once more. This mode is activated in the most dependable way possible: using a button on the wall outside the PSU.

With ETA-A and LAMBDA-S efficiency and noise certifications, the NZXT C750 Gold Power Supply is an 80 Plus Gold certified power supply from Cybenetics. With up to 450W loads, it isn’t one of the quietest 750W power supplies, but customers who are sensitive to noise won’t be bothered by it. However, for customers that need minimal noise output, the Corsair RM750x and RM750, the Asus ROG Strix 750, and the XPG Core Reactor 750 are better options. It is quite high because the total performance is comparable to that of the Seasonic Focus Plus Gold 750. The C750, however, cannot take the top spot in our list of the finest power supplies because this is a competitive area.

The C750 is NZXT’s mid-range model in the C series. Because the 750W category is so well-liked by customers and provides enough power to assemble a powerful gaming system with 8-core Intel or 12-core AMD processors and Nvidia RTX2070/2080 or AMD 5700XT graphics cards, we had to examine the C750 since we had already evaluated the C850 and the C650. If you intend to use many high-end graphics cards, you should seek for a power supply with a minimum 1000W capacity to ensure that you won’t run into any power problems.

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The NZXT C750 Gold Power Supply, like its siblings, runs on the same platform as the Seasonic Focus Plus Gold, so we anticipate solid performance and adequate levels of efficiency. Aside from not supporting the alternate sleep mode, which enables the system to rapidly wake up from sleep, this platform isn’t adjusted to allow for more than 70% efficiency at extremely modest loads (2% of the PSU’s maximum rated capacity). Since there are now no mainboards on the market that can support the latter, it doesn’t seem all that surprising. Nevertheless, you should consider the long term when you get a new power supply because the PSU is a part you could utilize in a variety of projects.

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Let’s display the most crucial specifications in the following tables.


24-pin ATX power1
4+4-pin CPU power2
6+2-pin PCIe power6
SATA power6


24-pin ATX power600 mm, Nylon sleeving
4+4-pin CPU power700 mm, Nylon sleeving
6+2-pin PCIe power650 + 150 mm, Nylon sleeving
SATA power500 + 150 mm
Peripherals500 + 150 mm


Dimensions135 x 135 x 25 mm
Speed0-2300 ± 10% RPM
Airflow93.02 CFM (Tpy.)
Noise44.5 dBA max
BearingFluid Dynamic Bearing (FDB)


Manufacturer (OEM)Seasonic
Max. DC Output750W
Efficiency80 PLUS Gold, ETA-A (88-91%)
NoiseLAMBDA-S++ (30-35 dB[A])
Modular✓ (Fully)
Intel C6/C7 Power State Support
Operating Temperature (Continuous Full Load)0 – 50°C
Cooling120mm Fluid Dynamic Bearing Fan (HA1225H12F-Z)
Over Voltage Protection
Under Voltage Protection
Over Power Protection
Over Current (+12V) Protection
Over Temperature Protection
Short Circuit Protection
Surge Protection
Inrush Current Protection
Fan Failure Protection
No Load Operation
Warranty10 Years

NZXT C750 Gold Power Supply CONCLUSION

Thanks to the excellent Seasonic platform it makes use of, the NZXT C750 Gold Power Supply competes head-to-head with the other two models in the range. Even though it can’t match the performance of the stiff competitors in this category, the complete package is alluring. The new C750 and C650 models from NZXT also come with two EPS ports, making them compatible with all high-end CPUs and mainboards.

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The C750’s aggressive fan speed profile at higher loads and operating temperatures is its biggest drawback. The Seasonic Focus Plus Gold 750W, which uses the same platform, has the same issue. It appears that in order to loosen up the fan profile, larger heat sinks are needed, something that Asus accomplished with its ROG Strix 750W model.

A different choice would be to employ better main switching FETs, but this would have a significant impact on the cost of production. This was demonstrated in the DeepCool GamerStorm DQ-M V2L 850W, where CWT was compelled to implement a vigorous fan speed profile in order to let the poor primary switching FETs to operate at lower temperatures.

The Corsair RM750 and RM750x, the XPG Core Reactor 750, and the Asus ROG Strix 750 are all worthy alternatives to the NZXT C750 Gold Power Supply if noise output is a major concern for you.

Is NZXT C750 Gold Power Supply enough for Ryzen CPU?

The majority of gaming setups can be powered by this power supply. It is sufficient for practically any Ryzen CPU, depending on the other components of the computer aside from the CPU.

Let’s use the high-end RTX 3070 graphics card and the Ryzen 5600X, a medium power-hungry Ryzen CPU, as an example.

Without a doubt. In all honesty, you probably wouldn’t require a PSU that is any larger than 550W. The Ryzen 5 5600X consumes 142W at 100%, compared to the 3070’s 220W at maximum load. Consequently, these two together only consume roughly 362W, giving plenty of room for the remaining components (which usually use less than 10W apiece).

The 3070 and 5600X may even be overclocked while still retaining a reasonable margin on the power supply thanks to this. Save your money by using a 550W instead of a 750W, which will free up more space.

Therefore, we can confidently state that the NZXT C750 Gold Power Supply is enough for nearly all Ryzen CPU-related scenarios. Also keep in mind that NZXT is a very dependable PSU, so purchasing it won’t be a mistake.

Is NZXT C750 Gold Power Supply enough for an Intel CPU?

Therefore, what we discussed about Ryzen CPUs applies to Intel CPUs as well, and NZXT C750 Gold Power Supply is enough in every situation where we use Intel CPUs.

So let’s consider the case in which we employ 12600K in conjunction with RTX 3080.

Although it is rare to find a demand for this much power outside of CPU torture tests like Prime95, the 12600K may consume a continuous (PL2) of 160W. However, even if the CPU were to operate at 100% of its rated capacity while drawing its maximum of 290W, the two components would still require 450W in total, or 490W when the motherboard, RAM, fans, RGB lights, and disks are included.

By upgrading to an RTX 3080, you might theoretically achieve 530W, which a 600W or 650W supply could easily handle.

Choosing a 750W unit won’t hurt anything, but it isn’t necessary because more power (usually) means better components.

A RTX 3080 and a 12600K will have a typical gaming load of about 480W.

Aside from that, we can say that this PSU is acceptable for the majority of Intel gaming builds. The only situation where this PSU can suffer is when you pair, for instance, RTX 3090 with 12900K and stress it out at full power.

Can you do overclocking with NZXT C750 Gold Power Supply?

Because of its Gold certification and build quality, this PSU can actually produce 750W of power. We can confidently state that, even with significant overclocking, this PSU is sufficient for the majority of gaming rigs.

So here’s an example.

The RTX 3090 can be powered by a 750W power supply… If you’re trying to overclock an Intel i9 12900k. (Stock draws 230W and OC draws 350W.) With just the CPU, crazy OC would be around 400W.

290W standard power draw from an RTX 3070 Ti, on the other hand.

So 640 W670 W PSU is about the bare minimum for an i9-12900k build. For a good build, we typically recommend 1.25-1.5 times the draw. So 850W-1000W is the recommended power range for that build.

However, something less powerful, such as a Ryzen 5 5600x or an i5 11400k, has a maximum power draw of 90 watts. So 90+290+30 for the remainder of the system. 620W would be sufficient for that build.

To be honest, you could go all the way up to a Ryzen 9 5950x because it only needs around 180W and does not require an 800W PSU.

As a result, we can conclude that the NZXT C750 Gold Power Supply is adequate for moderate overclocking of some medium- to high-end CPUs and GPUs.

NZXT C750 Gold Power Supply rating

Cybenetics’ NZXT C750 Gold Power Supply is rated GOLD with ETA-A and LAMBDA-S efficiency and noise certifications. While it is not one of the quietest 750W power supplies, with loads of up to 450W, it will not bother users who are sensitive to noise. Nonetheless, the Corsair RM750x and RM750, the Asus ROG Strix 750, and the XPG Core Reactor 750 are better choices for users who prioritize low noise output. Overall performance is comparable to that of the Seasonic Focus Plus Gold 750, which is quite good. However, because this is a competitive category, the C750 cannot claim the top spot among our best power supplies.

The C750 from NZXT is in the middle of the C series lineup. We have already reviewed the C850 and C650, so we had to look at the C750 because the 750W category is very popular among users because it provides enough power to build a powerful gaming system with 8-core Intel or 12-core AMD processors and Nvidia RTX2070/2080 or AMD 5700XT graphics cards. If you intend to use more than one high-end graphics card, you should look for a stronger power supply with at least 1000W capacity to ensure that you won’t have any power issues.

What connectors are on NZXT C750 Gold Power Supply?

NZXT C750 Gold Power Supply connectors are:

  • ATX connector 20+4 pin (610mm) – 1 cable/1 connector
  • 4+4 pin EPS12V (650mm) – 1 cable/1 connector
  • 6+2 pin PCIe (680mm+80mm) – 2 cables/4 connectors
  • SATA (500mm+100mm+100mm+100mm) – 2 cables/8 connectors
  • 4-pin Molex (500+100mm+100mm) – 2 cables/6 connectors
  • AC Power Cord (1400mm) – C13 coupler – 1 cable/1 connector

Our sample had only one EPS connector, but according to NZXT’s press release, all C650 and C750 will now have a second EPS cable, bringing the total number of corresponding connectors to two. Because of the vast increase in cores in modern CPUs, all high-end mainboards must include a pair of EPS connectors.

Each cable contains a pair of PCIe connectors. The length of the PCIe cables is significant. These cables are typically shorter than EPS cables (s). Finally, while there are many peripheral connectors, the distance between them is too short at 100 mm. Finally, the inclusion of inline caps in ATX, EPS, and PCIe cables can cause issues with cable management.

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NZXT C750 Gold Power Supply
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