best power supply over 1000w
A 1000W power supply is perhaps more essential than ever, as PC hardware components become ever more power-intensive. AMD RX 7000 series and RTX 4090 need four 8 pin GPU power connectors, which means you’ll need a power supply that’s very powerful. Is there a power supply that can output 1000W, and which of them uses PCI-E 5.0 to eliminate those annoying 3- and 4-way adapters, given how power-intensive building an exceptional powerful PC has become?
Best 1000W Power Supplies to Buy A 1000W power supply can be challenging to find for your build, so we have put together a list of the best 1000W power supplies for various builds. For those who want the best 1000W power supply money can buy, we’ve included both PCI-E 5.0 and 4.0 options along with a variety of efficiency ratings and extra features. Check out the list below to see the best 1000W power supplies to buy:
Read more on : best power supply for 4080
Gigabyte P1000GM PSU

GIGABYTE GP-UD1000GM PG5 1000W PCIe 5.0
Key Specs:
80+ Gold Efficiency Rating
Modularity: Fully Modular
PCI-E Generation: PCI-E Gen4
Zero Fan Mode: Yes
RGB: No
Review
A Gigabyte’s P1000GM power supply is our first pick. It offers a variety of different cables and connections and is one of the least expensive 1000W power supplies on the market. With an 80+ Gold efficiency rating, the P1000M will deliver 90% efficiency at 50% load, resulting in less noise and heat waste. This level of load will keep your PSU’s costs down over the long term, which is ideal in today’s economic climate.
A 120mm smart hydraulic bearing fan that keeps noise levels low and stops when the load is less than 20% is also designed to extend the life of your PSU. As a result of the bearing itself, the P1000GM is one of the best options available at a lower price point. As a result of the efficient rating, you have access to a wide variety of cables for installing peripherals and accessories. There is no ATX support on this PSU, but for the price, I think this is a small compromise. Also related: Best PSUs for RTX 3060
NZXT C1000 Gold PSU

Key Specs:
Efficiency Rating: 80+ Gold
Modularity: Fully Modular
PCI-E Generation: PCI-E Gen4
Zero Fan Mode: No
RGB: No
Review
Despite not having much aesthetic appeal, NZXT know how to make a compact, sleek design that blends in well with other components. We’ve used the C1000 Gold in many PC builds due to its reliability and consistency.
This cable management system offers you a choice of fully modular cables, allowing you to pick and choose as you please, reducing the annoying clutter that comes with non-modular designs. It also boasts an 80+ Gold efficiency rating, reducing power losses as heat and noise, and delivering 90% efficiency at around 50% load. For those searching for a 1000W power supply unit at a competitive price, this PSU is an excellent choice.
MSI MPG A1000G PSU

MSI MPG A1000G PCIE 5 Gaming Power Suppl
Key Specs:
Efficiency Rating: 80+ Gold
Modularity: Fully Modular
PCI-E Generation: PCI-E Gen4
Zero Fan Mode: Yes
RGB: No
Review
Our in-depth review of the MSI MPG A1000G power supply covers another power supply we’ve used in quite a few builds. This unit, featuring MSI’s signature MPG branding, features a compact and sleek design. It is ideal for top-end builds that require plenty of wattage to sustain a heavy load. This unit has an efficiency rating of 80+ Gold, ensuring lower energy consumption.
You can easily manoeuvre and manage the cables within your case without kinks or unsightly bends thanks to the modular design of this power supply, equipped with flat cables. A1000G’s Zero Fan mode allows you to enjoy absolute silence when the overall TDP is below 40%, demonstrating how efficient and quiet the whole PC build is.
Corsair HX1000i PSU

Corsair HX1000i, HXi Serie
Key Specs:
Efficiency Rating: 80+ Platinum
Modularity: Fully Modular
PCI-E Generation: PCI-E Gen5
Zero Fan Mode: Yes
RGB: No
Review
The HX1000i from Corsair is the perfect upgrade for new ATX 3.0 builds. With an 80+ Platinum efficiency rating, this PSU can support sustained, high loads and the latest PC upgrades. By including ATX 3.0, you will also no longer need pesky adapters, so you can pick and choose your cables as you please without being annoyed by them.
In our roundup, the HX1000i is also one of the most configurable power supplies, with Corsair’s iCUE software making it easy to customize the power supply. With Corsair iCUE, you are able to change fan curves, monitor system-wide information, and connect the unit directly to the power supply unit’s USB 2.0 header. With the HX1000i, users can control their systems to the fullest extent possible thanks to the newest generation of GPUs.
ASUS ROG THOR 1000 Platinum II

ASUS ROG Thor 1000W Platinum II Fully Modular Power Supply (
Key Specs:
Efficiency Rating: 80+ Platinum
Modularity: Fully Modular
PCI-E Generation: PCI-E Gen5
Zero Fan Mode: Yes
RGB: Yes
Review
Those of you who want to build a system with the latest generation of graphics cards will love the ASUS ROG THOR Platinum II power supply. This PSU gives you the option of making an awesome looking PC. A unique feature of the ROG THOR is its OLED display, which lets you monitor performance and efficiency in real-time. This OLED display looks awesome, and the RGB lighting effects and colors can be configured to create a variety of different lighting effects.
With its 80+ Platinum efficiency, the ROG THOR is rated Lambda A++, a widely recognized noise level rating. The ASUS ROG THOR is stealthily quiet with low noise levels even under significant load. This Cybenetics certification is widely recognized as a way of describing a product or component’s noise level.
Also related: Best PSUs for RTX 3080
Do You Need 1000W for a Modern Gaming PC Build?
There is a growing need for 1000W units, even in builds you might categorize as ‘upper mid-range’, as I alluded to in the introduction. It was once considered rare to build a PC that required a 1000W PSU, but today’s CPUs and GPUs are more power hungry than ever, so the need for a 1000W PSU has become more important than ever.
It is also important to keep in mind that a 1000W power supply won’t really provide the full 1000W all of the time. Rather, this is useful for when GPU and CPU power consumption spikes occur at the beginning of a high load period.
Despite the best power supplies available, you still lose some power due to efficiency, with even the most efficient units losing a little power as heat and noise. The 80+ efficiency rating of a power supply is always worth a look, as it gives you an idea of how efficient it is.
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Can You Buy a PSU With Too Much Wattage?
When it comes to finding the right wattage for your build, there is a bit of a balancing act despite the clear increase in wattage requirements. You can find many guides and configuration tools online that will help you choose the power supply you need based on your chosen components. However, these websites’ biggest flaw is that they don’t consider other factors like efficiency, longevity, and sometimes even boosting behaviors.
The kind of PC you build will depend on whether you need to meet the power requirements of your components or not, but there are definitely other factors to take into account as well. You will definitely need some legroom for your power supply if you plan on upgrading to the latest components within the next few years if your wattage requirements continue to grow. We recommend bumping up your build power requirement from 850W to 1000W or even more if your overall build power requirement is 850W.
Do I Need The New PCI-E 5.0 Standard?
As with Nvidia’s RTX 3000 Founders Edition cards, the 16-pin and 12-pin power connectors have been introduced, and they have carried over to the RTX 4000 series as well. As a result, the 3000 series only used the connector shape, not the digital connectivity provided by the cable. The cable isn’t necessary, but it helps tidy up a build’s aesthetics and cable management, and keeps everything streamlined.
Read more on Best PSUs for the RTX 4090
Buying guide for the best power supply over 1000w
You must choose the right power supply if you want to ensure that your computer runs smoothly and efficiently, as it is one of the most crucial components in a computer setup. Here’s a buying guide to help you choose the best power supply over 1000W if you’re building a high-end gaming or workstation PC.
Efficiency Rating:
In order to determine how much power can be converted from AC to DC, a power supply is graded on its efficiency. A power supply with an 80 Plus rating means it is energy efficient and will consume less power. An 80 Plus Titanium rating guarantees 94% efficiency.
Modularity:
It can be a real lifesaver for smaller builds, allowing you to use only the cables you really need. If you have a large case with lots of room, this may not be as important, but if you have a small case with little room, it could make things easier.
Wattage:
High-end systems with multiple graphics cards should use a power supply that is rated over 1000W, which measures how much power it can deliver. Power supplies are rated according to the amount of power they can deliver, expressed in watts. Choose a power supply that can deliver sufficient power to your system’s components.
Brand reputation:
These brands offer warranty and technical support, so they may be beneficial in case of any issues. Established brands such as Corsair, EVGA, Seasonic, and ASUS have a good reputation for quality and reliability.
Protection Features:
Overvoltage protection (OVP), Undervoltage protection (UVP), Overcurrent protection (OCP), Overpower protection (OPP), and Short Circuit Protection (SCP) should be available on a good power supply. Power surges and fluctuations can damage your components if you use these features.
Make sure you consider your system’s requirements as well as the features of different models before choosing a power supply over 1000W. The best way to ensure that your system runs smoothly and reliably for years to come is to invest in a high-quality power supply. Compare products and read reviews before making a decision.
Final thoughts on best power supply over 1000w
For the best power supply over 1000W, you should consider factors such as efficiency, modularity, wattage, brand reputation, and protection features when making your purchase. Your system will run smoothly and reliably if you choose a power supply from a reputable brand with high efficiency ratings, ample wattage, and necessary protection features. Make sure your power supply can handle the demands of your system, and buy a high-quality unit for peace of mind. In order to build a reliable, high-performance computer setup, you need to consider these factors when selecting a power supply.