Modular Power Supply Units (PSUs) are essential to a PC build as they offer flexibility with cabling, and the final build tends to be less cluttered.
A 750W PSU can provide enough power to run a decent rig with high-performance GPUs and leave some room for overclocking as well.
Consider the following build:
- RTX 3080 - 320W Rated
- i7-11700K - 125W TDP OR Ryzen 7 5800X - 105W TDP
- 32 GB RAM (16G x 2)
- ATX Motherboard
- 1TB m.2 nvme
- Air Cooler + Case Fans
Such a system need a base power supply of 580-600 Watts. It does not take into account any additional pcie devices, external usb devices, that would need power as well.
Using a 750W PSU with such a build would be ideal as it would not only provide sufficient power but also have some room for overclocking as well, which is a common practice on high end gaming and workstation builds.
A 750 watt PSU is on the higher side of power capacity and it can run most high end cpus like Ryzen 7-5800X and gpus like RTX 3070 easily along with overclocking of cpu, gpu and the RAM. You would need to have powerful cooling in place to handle overclocking which might need more power to drive lots of fans, specially with AIO radiators.
Dual GPU Setups
You need to be more careful if you plan to run SLI based multi gpu setups using a 750 Watt PSU as they require a lot more power depending on which gpu is being used. A RTX 3060 dual gpu system can be powered with a 750 watt psu.
However, an RTX 3080 based 2 gpu system will need around 900W of power very easily. RTX 3080 Ti and 3090 need even more power.
Form Factor and Cooling
Since 750W psus handle more power, and produce more heat consequently, they are mosty available in the full ATX size only, which won't fit in smaller pc cases designed for mini ITX builds.
PSUs also have fans for cooling. These can be noisy under load so various measures are taken to reduce that, including Eco and Fan-less modes on some PSUs, as well as having a fan control switch being placed on others.
Certifications like 80 Plus indicate an efficiency of at least 80%. Other ratings like Titanium, Platinum, Gold, Silver, and Bronze are used too, with Bronze being the least efficient but also more affordable.
Our Top Picks for Best 750W Modular PSU
Here are some of the best 750W Modular PSUs. Most are 80+ Bronze or Gold certified.
To learn more about psu specifications you can read our guide here: 8 Technical Specifications of PSU Explained - The Power Supply of PC
1. Corsair CX Series 750 Watt Modular Power Supply (CX750M)
This PSU is ideal for basic PC builds and upgrades. It pushes enough power to drive high-performance components, with a good power efficiency rating, and provides you with an easy installation process due to its modular connectors.
Corsair CX Series 750 Watt Modular Power Supply (CX750M)
Features
- Dimensions: 5.9x6.3x3.4 Inches
- Weight: 6.4 Pounds
- 8x SATA connector
- 4x PCIe connector
- Sleeved Cables
- Matte Black Finish
- Dedicated 12V Rail
- Universal AC input
- 85% Efficiency
Review
Being affordable makes this PSU ideal for entry-level builds. It can provide up to 750 Watts of power and boasts an efficiency rating of about 85%. Among many things, this means that heat generation is kept low.
Besides, the unit has a large diameter fan which not only helps in cooling, but size also helps it remain quiet even when running. Being a thermally controlled fan, its speed can be reduced when the PSU is idle, thus reducing overall noise generation.
The unit is modular, so users get to only connect the cables that they need. Any other unnecessary cables can be left unconnected. This results in a cleaner and less cluttered build which can be not only good for aesthetics but also a good air supply.
It has long connector cables which makes it easy to use the PSU without cable extenders even in some large cases. The cables are sleeved which gives it a stylish and premium look, a feature that the matte black finishing also enhances.
While affordable, the device carries an 80+ Bronze rating which speaks of its reliability. Additionally, the device has an efficiency of 82% at 100% and 20% load, and at 50% load, the efficiency is 85%.
2. Aresgame 750W Semi Modular Power Supply (AGV750)
Good performance and the capacity to deliver stable output power make this a great choice for gaming PC builds. It comes with a 120mm fan that helps to keep it cool during operation and has high efficiency of up to 85%.
Aresgame 750W Semi Modular Power Supply (AGV750)
Features
- Dimensions: 5.9x5.5x3.3 Inches
- Weight: 4.6 Pounds
- 6x SATA connector
- 2x PCIe connector
- 100-240V AC input
- 85% Efficiency
- Honeycomb ventilation
Review
The AGV750 from Aresgame is a semi-modular PSU. It has an 80 Plus Gold rating which places it at an efficiency rating of up to 85%. This means less energy wastage during operation.
Furthermore, the unit comes with a 120mm inbuilt fan which works to dissipate away excess heat that comes by during operation. To make the cooling even easier, the PSU case has honeycomb cutouts for ventilation.
The fan is controllable which lets it spin up under load and when the load is reduced, the fan can slow down to reduce noise.
Being semi-modular, some of the power connectors on this unit can be left unconnected if you don't need them. Doing so reduces clutter within your build. At the same time, the PSU maintains a clean black look with a black-coated SECC shell, cable, and connectors. Even the fan itself is black.
The two PCIe connectors are the 6+2 pin kind which is commonly used by powerful GPUs. That makes this PSU good even for some high-performance builds. Furthermore, because it has long cables, routing them even in larger cases will be much easier.
3. Corsair RMX Series 750 Watt Fully Modular Power Supply (RM750x)
The RMX750 is an 80 Plus Gold-rated PSU from Corsair. It is a modular unit and comes with several included cables, allowing you to wire up only the components you need, resulting in an overall cleaner build.
Corsair RMX Series 750 Watt Fully Modular Power Supply (RM750x)
Features
- Dimensions: 6.3x5.91x3.39 Inches
- Weight: 3.65 Pounds
- 9x SATA connector
- 4x PCIe connector
- Fully modular
- Zero-RPM Fan mode
- Up to 92% Efficiency
- 135mm Fan
Review
With the zero-RPM fan mode, you can have near-silent operation when the PSU is operating under low to medium load. This happens because the 135mm inbuilt fan stops spinning completely.
The PSU is compact and can be fit into small PC cases for low-profile build. It, however, also provides enough juice for high-performance builds.
It has an 80 Plus Gold certification. This essentially means that at 20%, 50%, and 100% load, the PSU has an efficiency of 90%, 92%, and 89% respectively. As a result, less power is wasted and subsequently less heat is produced.
Being a full-modular system, you can plug in only the cables you need. And, since it has various connectors including 9 SATA and 4 PCIe, you get a lot of flexibility with your PC build.
To make the unit reliable and long-lasting, industrial-grade capacitors are used. These can withstand temperatures of up to 105 degrees. As such, the PSU has a rated Mean Time Before Failure (MTBF) of about 100,000 hours.
4. NZXT 750 Watt Modular Power Supply (C750)
This fan comes with a button that can be pushed to enable zero RPM fan mode. This will stop the fan and essentially make your PC run quieter when not under load. Additionally, it is compact enough to fit inside all ATX-standard cases and comes with support for high-end GPUs like the NVIDIA 3090.
NZXT 750 Watt Modular Power Supply (C750)
Features
- Dimensions: 5.9x3.39x6.3 Inches
- Weight: 4 Pounds
- 8x SATA connector
- 4x PCIe connector
- Zero-RPM Fan mode
- 120mm Fan
- 90% Efficiency
- 100-240V AC Input
Review
With an 80 Plus Gold certification, this PSU from NZXT offers high energy efficiency of up to 90% under a 50% load.
It has four 6+2 pin PCIe connectors which can be used to power high-end graphics cards on a high-performance system. Additionally, there are 8 included SATA connectors for the various devices you may need to install.
Being a modular PSU, you get to plug in only the cables you need, and the rest can remain in the box. This improves overall system build quality and reduces obstructions to airflow. Also, cable management is improved in the process. The cables are sleeved to make them more durable and provide a premium look.
Besides being efficient, the PSU is also very durable. It has a 120mm fan that can run at up to 2200RPM and uses a fluid dynamic bearing to reduce friction and noise. The system, as a whole, has a 100,000 hours MTBF.
5. EVGA SuperNOVA 750 G3 Fully Modular Power Supply
This device is small but powerful. It covers a smaller footprint inside the case but delivers 750 Watts of power with an efficiency of over 91% under certain loads. With the Eco-Mode turned on, you can have little to no noise under low to medium loads since the fans will be turned off.
EVGA SuperNOVA 750 G3 Fully Modular Power Supply
Features
- Dimensions: 5.91x5.91x3.35 Inches
- Weight: 4.99 Pounds
- 9x SATA connector
- 6x PCIe connector
- Eco Fan mode
- 130mm Fan
- Over 91% Efficiency
- 100-240V AC Input
- Japanese Capacitors
Review
This is a fully modular PSU that's easy to install and maintain. It comes with the necessary cables to make it easy to start building your PC.
There are 9 SATA connectors as well as 6 PCIe connectors for add-in cards like GPUs. There are also four peripheral connectors for various other devices. The device is fully modular so you can keep cables inside the case to as minimum as necessary.
The PSU has a 130mm fan that uses Hydraulic Dynamic Bearing. This reduces noise, and at the same time, provides lubrication, which improves the durability of the PSU.
It also features an Eco-mode which switches off the fan when the PSU is under low to medium load, thus eliminating all fan noise.
With an 80 Plus Gold certification, the device is guaranteed to offer good performance. It has over 91% efficiency and is capable of delivering up to 750W of power while supporting anywhere from 100 to 240 volts of AC input.
6. Seasonic FOCUS 750 Watt Fully Modular Power Supply (GX-750)
Very little energy is wasted thanks to this PSU's 80 Plus Gold rating. That and the fact that it is rated for 750 Watts output makes it an ideal PSU for gaming and other demanding tasks. It has a silent operation mode, which is easy to configure thanks to the fan control button on the unit itself.
Seasonic FOCUS 750 Watt Fully Modular Power Supply (GX-750)
Features
- Dimensions: 5.51x5.9x3.38 Inches
- Weight: 3.53 Pounds
- 8x SATA connector
- 4x PCIe connector
- Hybrid silent fan
- 120mm Fan
- 90% Efficiency
- 100-240V AC Input
- 50000 hours life expectancy
Review
You get a 120mm fan with this PSU, and it is designed for various operation modes. For anything lower than a 30% load, you get a fan-less operation where the PSU will be cooled passively. This reduces overall noise from the system.
Additionally, the fan uses a fluid dynamic bearing to improve performance by reducing friction. This also makes the device very durable, and hence, the fan alone has an MTBF of about 50,000 hours. For the rest of the unit, the number is about 100,000 hours.
The device takes in the full range of AC input, 100 to 240 volts, and can deliver up to 750 Watts of power. Being fully modular, you can connect only the cables that you will need to the PSU and leave all unused connectors unconnected. There's also electrical protection for things that live over-power, over-voltage, and under-voltage.
Various connectors are provided, which include 8 SATA connectors and 4 PCIe connectors. And, it is Gold-rated, meaning it's very efficient when converting from AC input to DC.
7. Thermaltake Toughpower 750W Semi Modular Power Supply
The Toughpower 750W from Thermaltake is a semi-modular PSU with an 80 Plus Gold certification and an efficiency of up to 92%. It is also very durable and has an MTBF rating of about 120,000 hours.
Thermaltake Toughpower 750W Semi Modular Power Supply
Features
- Dimensions: 5.9x3.4x5.5 Inches
- Weight: 2.73 Pounds
- 12x SATA connector
- 4x PCIe connector
- 140mm Fan
- 100-240V AC Input
- 120000 MTBF
- Japanese capacitors
- ATX form factor
Review
With enough juice to power high-end graphics cards, and a dedicated 12V rail to deliver power to the CPU, this PSU is good for mid to high-performance rigs. Not only is it affordable, but it also takes up a small space, which makes installing it even in small cases an easy endeavor.
Being a semi-modular unit, some cables are permanently attached. However, for things like SATA and PCIe, you get to use only the connectors that you need, which makes building a PC with this much easier thanks to simple cable management.
It has a 140mm fan which can run at over 1500RPM. To keep it silent and help it last longer, double ball bearings are used.
The PSU has an efficiency of between 87 and 92%, depending on the load on its circuit. It can also take in 100 to 240 volts of AC while pushing out about 750 Watts of power.
It is constructed from high-quality materials, including high-performance Japanese capacitors which are very reliable. This results in longevity and the unit are rated with an MTBF of about 120,000 hours.
8. Thermaltake Toughpower Grand RGB 750W Fully Modular Power Supply
One of the most outstanding features of this PSU is its RGB fan. It has up to 5 different lighting modes and thanks to its inbuilt memory, you can save your preferred mode. It is also fully modular, so only the necessary cables get connected while the rest stay in the box.
Thermaltake Toughpower Grand RGB 750W Fully Modular Power Supply
Features
- Dimensions: 5.9x3.34x6.3 Inches
- Weight: 4.43 Pounds
- 9x SATA connector
- 4x PCIe connector
- RGB Fan
- 100-240V AC Input
- 120000 MTBF
- Japanese capacitors
- Flat cables
Review
This PSU is ideal for users who like RGB components. It comes equipped with a customizable RGB fan with a button on the PSU itself to cycle through the different available lighting modes. For silent operation, there's a Smart Zero fan mode which switches the fan off when the PSU is operating on lower than 20% loads.
It is fully modular and comes with flat cables, which are easy to route and result in a cleaner-looking build. There are various connectors at the back, including 9 five-pin SATA and four 6+2 pin modular PCIe connectors. The PCIe connectors are colored differently to make it easier to tell them apart.
The PSU uses high-quality components, including long-lasting Japanese capacitors. This results in longer usage times which is evident from the 120,000 hours MTBF rating it comes with.
With its 80 Plus Gold rating, the PSU can deliver enough power for high-power components, including high-end GPUs.
Conclusion
Before settling for a certain PSU, ensure it will fit in your case by checking its dimensions. 750 Watt PSUs supply enough power for most basic builds and even high-performance PCs can use it. But to ensure a more stable and efficient power supply, a higher efficiency rating can come in handy.
Under high loads, fan noise can become an issue, but some PSU manufacturers take measures to avoid this. And by using high-quality materials like Japanese capacitors and sleeved cables, some PSUs can run for tens of thousands of hours.
While an 80 Plus Bronze-rated PSU is enough for a basic gaming rig, higher performance can be obtained from a Gold-rated model or higher.
To calculate the power requirements of your PC build check out the following free online tools:
Newegg's Power Supply Calculator:
https://www.newegg.com/tools/power-supply-calculator/
PC Builds PSU Calculator:
https://pc-builds.com/psu/
Alternatively you could also use the PcPartPicker List builder and it will indicate the required wattage.
https://pcpartpicker.com/list/
Links and Resources
For more information about the products, check out their official site at the following links:
#1. Corsair CX Series 750 Watt Modular Power Supply (CX750M)
#2. Aresgame AGV750">Aresgame 750W Semi Modular Power Supply (AGV750)
#3. Corsair RMX Series 750 Watt Fully Modular Power Supply (RM750x)
#4. NZXT 750 Watt Modular Power Supply (C750)
#5. EVGA SuperNOVA 750 G3 Fully Modular Power Supply
#6. Seasonic FOCUS 750 Watt Fully Modular Power Supply (GX-750)
#7. Thermaltake Toughpower 750W Semi Modular Power Supply
#8. Thermaltake Toughpower Grand RGB 750W Fully Modular Power Supply
