The Best 1000-Watt Power Supply of 2024 (Plus 5 More Options)

Building a high-end gaming computer in 2024 may require a 1000-watt power supply unit (PSU) to provide sufficient and stable power delivery to the latest components. Power-hungry graphics cards, fast CPUs, RGB lighting, and other features can easily demand over 850 watts during peak operation.

Selecting the right PSU is crucial because it literally powers every other part of your system. An unreliable or underpowered unit puts your expensive PC investments at risk. This expert guide will help you navigate the complex PSU market to find the best 1000-watt option for your specific build.

Why Choose a 1000W Power Supply?

According to hardware industry analysis firm Jon Peddie Research, next-generation graphics cards like Nvidia‘s RTX 4090 can consume up to 600 watts on their own [1]. Pair such a GPU with a high-end CPU, lighting, drives, and other accessories, and total system power draw will likely exceed 850 watts.

Running too close to a PSU‘s rated output for extended periods shortens its lifespan and threatens stability. Most experts recommend leaving at least 100-150 watts of extra headroom [2]. For that reason, a 1000-watt unit makes sense for future-proof high performance builds.

The good news is 1000W power supplies have also become quite affordable, with capable models available between $100 to $300. When you consider these units should last 5-10 years, that cost gets amortized over a long useful lifespan alongside your other core components.

How We Chose the Best 1000W PSUs

Our top recommendations reflect weeks spent comparing specifications, reviews, and pricing across dozens of 1000-watt units from leading manufacturers like Corsair, EVGA, Seasonic, and Cooler Master.

We evaluated products on these key criteria:

Efficiency – Units rated 80 Plus Gold or higher transform wall power into DC current most effectively, wasting little energy as heat. This saves electricity costs and reduces thermal strain.

Modularity – Fully modular PSUs with detachable cables simplify installation and reduce case clutter.

Noise Level – Quiet operation comes from technologies like zero RPM fan modes and quality bearings.

Protection – Safeguards like over voltage and overload protection prevent catastrophic failures.

Warranties – Long 5-10 year coverage demonstrates confidence in longevity.

Price – We found high-performing picks at varied budgets.

Those factors led us to these six stellar 1000+ watt recommendations:

Overall Best 1000W PSU: Corsair HXi Series

  • 80+ Platinum certified efficiency
  • Fully modular cables
  • 10 year warranty
  • $339

The newly updated Corsair HXi Series PSU delivers best-in-class performance and quality with 80+ Platinum efficiency, fully modular cabling, and ultra-low noise operation. Stellar reviews and Corsair‘s excellent 10 year warranty earn this PSU our top overall recommendation.

Most Power: Thermaltake Toughpower Grand RGB

  • Massive 1300 watt output
  • addressesable RGB lighting
  • fluid dynamic fan Bearing
  • $299

For extreme power users, the Thermaltake Toughpower Grand RGB 1300W offers a staggering 1300 watts to account for multiple GPUs, massive storage arrays, and excessive RGB bling. Stacked with features like modular cabling, a whisper-quiet fluid bearing fan, and addressable lighting sync, it eliminates any concerns around having enough power headroom.

Best Value: EVGA SuperNOVA 1000 G6

  • 80+ Gold efficiency
  • ECO mode fanless operation
  • Fully modular
  • $189

The EVGA SuperNOVA 1000 G6 delivers 80+ Gold efficiency, modular cabling, a 10 year warranty, and whisper-quiet eco mode fanless operation at an affordable mid-range price point. For most users, it represents the best blend of quality and value in a 1000W PSU.

Best Looking: ASUS ROG Strix 1000W

  • 80+ Gold efficiency
  • RGB lighting
  • 0dB quiet mode
  • $199

The ASUS ROG Strix 1000W marries signature ASUS Republic of Gamers style with strong electrical performance. Addressable RGB lighting syncs flawlessly with ASUS Aura ecosystem motherboards. Paired with a stealthy 0dB quiet mode, it delivers beauty and brawn.

Best Compact: SilverStone SX1000

  • 80+ Titanium efficiency
  • 140mm fan
  • Just 150mm long
  • $329

The SilverStone SX1000 delivers elite 80+ Titanium efficiency in a tiny 150mm long chassis. With a potent single +12V rail and quiet 140mm fan, it gives small form factor and HTPC builders 80+ Titanium efficiency and 1000W capacity.

Best Budget: Thermaltake Smart Series

  • 80+ Gold Certified
  • 5 Year warranty
  • Hydraulic bearing fan
  • $129

The no-frills Thermaltake Smart Series 1000W delivers excellent electrical performance and quiet cooling at an affordable price. While warranties and cables skew more basic, it focuses budget on the excellent 130mm hydraulic bearing fan and tight voltage regulation components gamers need.

What to Know Before Buying a 1000W PSU

While wattage ratings provide a simple starting point for choosing a capable power supply, truly understanding differences between units requires a deeper dive into specifications.

Here are key factors to weigh as you evaluate options:

80 Plus Efficiency Ratings

80 Plus certification programs measure how efficiently PSUs convert AC wall current into the DC power devices require. Higher ratings waste less energy as heat. From worst to best efficiency, ratings progress through:

  • 80+ White – 85% efficient at 100% load
  • 80+ Bronze – At least 82% efficient at 100% load
  • 80+ Silver – At least 85% efficient at 100% load
  • 80+ Gold – At least 87% efficient at 100% load
  • 80+ Platinum – At least 89% efficient at 100% load
  • 80+ Titanium – At least 90% efficient at 100% load

So an 80+ Gold PSU would transform 87% of pulled wall energy into actual power, wasting just 13% as heat.

While Titanium and Platinum rated models save more on electricity bills, they demand premium prices. Gold units strike the best balance for most gaming PCs.

Modular vs. Non-Modular Cables

Fully modular PSUs allow users to attach only necessary cables, avoiding excess wires cluttering their cases. Non-modular units permanently affix all cables, leaving you to hide unneeded ones as best you can.


Reputable power supplies incorporate safeguards against shorts, over voltage, under voltage, and overheating. These protections prevent disastrous component failures.


Long 5-10 year coverage demonstrates a manufacturer‘s faith in their product‘s longevity. Short 1-3 year policies suggest cheaper internal components at higher risk of early failure.

Active vs. Passive Cooling

The amount of heat generated scales directly with power supply wattage. While less demanding 400-600W units can rely solely on passive heatsinks, cooling a 1000W PSU requires smart active fans.

Features like fluid dynamic or rifle bearings increase fan lifespan and reliability at high RPMs. Zero RPM modes cut noise during light loads by disabling cooling fans entirely.


Make sure any PSU under consideration fits the space available in your computer case. 1000W models with large, slow-spinning 140mm fans can measure over 7 inches deep. Small form factor cases require specially sized SFX power supplies under 6 inches long.

What‘s It Like Gaming With a 1000W PSU?

Once a high-end 1000W PSU is installed, ideal models fade seamlessly into the background of a great gaming experience.

Efficient operation leads to smaller electricity bills over time. Modular cables enable tidy wiring that improves case airflow. Quiet-running advanced fans only spin up when needed, avoiding unwanted noise.

And most importantly, ample clean power gives expensive graphics cards and CPUs plenty of stable current to unleash their full performance potential. Gamers can crank settings to extreme levels without stability concerns holding them back.

When a PSU does its job right, you‘ll barely notice it‘s there – aside from frames rates and benchmarks reflecting the true capabilities of your cutting-edge components. And that peace of mind from protecting expensive investments is invaluable.

Frequently Asked Questions

How many watts do I need for gaming?

Adding up rated power draws of all components provides a good starting estimate that experts then recommend exceeding by at least 150W. This provides operational headroom and accommodates future expansion. High-end single video card systems typically need 750-850W units.

What if I plan on two graphics cards?

Multi-GPU systems substantially increase power requirements. Nvidia recommends a 1000W PSU for its RTX 3090 flagship. Dual video card builds should look for 1000W or greater units.

Do 80+ ratings matter for performance?

While 80 Plus certifications don‘t directly bear on power quality, they demonstrate efficient designs wasting less energy. Higher ratings indirectly suggest tighter voltage regulation, quality internal components, and robust protections as well – all factors that improve stability.

Are cheaper power supplies unsafe for computer components?

Bargain and off-brand power supplies often cut corners on safety protections and cooling. While failures remain relatively rare, damaged graphics cards, SSDs, or CPUs can cost hundreds to replace. Invest in a recognized brand like Corsair, EVGA, or Seasonic when possible.

Choosing the right 1000W+ power supply ensures your high-end gaming computer performs to its full potential. We hope this guide helps you find an excellent PSU providing clean, quiet, and reliable power delivery to all of your most coveted components for years of glorious PC gaming ahead!

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