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Power Supply 1000w Comparison - July 2025
| 1 Best Choice  9.6Exceptional | 2  9.3Excellent | 3  9.2Excellent | 4 Best Value  8.9Very Good | 5  8.7Very Good | 6  8.6Very Good | 7  8.5Good |
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ModelCORSAIR RM1000e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black | Model MSI MAG A1000GL PCIE 5 Gaming Power Supply - ATX 3.1 & PCIE 5.1 Ready - Full Modular - 80 Plus Gold Certified 1000W - Compact Size - ATX PSU - 10 Year Warranty | Model NZXT C1000 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 1000 Watts - 80 Plus Gold - 12V-2x6 Connector - Zero Fan Mode - 100% Japanese Capacitors - Black | Model Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compliant - Fluid Dynamic Bearing Fan - CORSAIR iCUE Software Compatible - 80 Plus Platinum Efficiency - Black | Model CORSAIR RM1000x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black | Model Corsair RMX Series (2021), RM1000x, 1000 Watt, Gold, Fully Modular Power Supply (Renewed) | Model Pystar 1000W Power Supply 80+ Gold Full Modular PSU, ATX 3.0 & PCIE 5.0, ES1000 |
BrandCorsair | Brand MSI | Brand NZXT | Brand Corsair | Brand Corsair | Brand Corsair | Brand Pystar |
Reviews | Reviews  | Reviews | Reviews  | Reviews | Reviews | Reviews |
Tech Specs | ||||||
item weight 3.61 pounds | item weight 7.25 pounds | item weight 7.87 Pounds | item weight 4.4 pounds | item weight 6.88 pounds | item weight 4.4 pounds | item weight 5.79 pounds |
customer reviews4.6 4.6 out of 5 stars 3, 436 ratings 4.6 out of 5 stars | customer reviews 4.6 4.6 out of 5 stars 1, 785 ratings 4.6 out of 5 stars | customer reviews 4.6 4.6 out of 5 stars 1, 166 ratings 4.6 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 144 ratings 4.5 out of 5 stars | customer reviews 5.0 5.0 out of 5 stars 2 ratings 5.0 out of 5 stars | customer reviews 4.5 4.5 out of 5 stars 27 ratings 4.5 out of 5 stars | customer reviews 4.3 4.3 out of 5 stars 535 ratings 4.3 out of 5 stars |
product dimensions 5.91 x 5.51 x 3.39 inches | product dimensions 11.5 x 9.25 x 5 inches | product dimensions - | product dimensions 7.09 x 5.91 x 3.39 inches | product dimensions 2.3 x 3.39 x 5.91 inches | product dimensions 7.09 x 5.91 x 3.39 inches | product dimensions 6.29 x 5.9 x 3.38 inches |
item dimensions lxwxh 5.91 x 5.51 x 3.39 inches | item dimensions lxwxh 11.5 x 9.25 x 5 inches | item dimensions lxwxh - | item dimensions lxwxh 7.09 x 5.91 x 3.39 inches | item dimensions lxwxh 2.3 x 3.39 x 5.91 inches | item dimensions lxwxh - | item dimensions lxwxh 6.29 x 5.9 x 3.38 inches |
color Black | color Black | color - | color Black | color Black | color - | color - |
Available On  | Available On   | Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.6
1CorsairCORSAIR RM1000e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black
Why we love it
Fully modular cables for easy setup.
Quiet operation even under full load.
Fast wake-from-sleep times.
Main highlights- Modern Standby Compatible: Extremely fast wake-from-sleep times and better low-load efficiency.
- Keeps Quiet: A 120mm rifle bearing fan with a specially calculated fan curve keeps fan noise down, even when operating at full load.
- Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting PCIe 5.1 platform withstands 2x transient power excursions from the GPU.
- Fully Modular PSU: Reliable and efficient, low-noise power supply with fully modular cabling, so you only have to connect the cables your system build needs.
- 105°C-Rated Capacitors: Delivers steady, reliable power and dependable electrical performance.
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9.3
2MSI
MSI MAG A1000GL PCIE 5 Gaming Power Supply - ATX 3.1 & PCIE 5.1 Ready - Full Modular - 80 Plus Gold Certified 1000W - Compact Size - ATX PSU - 10 Year Warranty
Main highlights- Fully modular design
- ATX 3.1 & PCIE 5.1
- 80 PLUS GOLD CERTIFIED
- 10-year limited warranty, guaranteeing long term reliable operation
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9.2
3NZXT
NZXT C1000 Gold ATX 3.1 - Fully Modular Low-Noise PC Gaming Power Supply - 1000 Watts - 80 Plus Gold - 12V-2x6 Connector - Zero Fan Mode - 100% Japanese Capacitors - Black
Main highlights- ULTRA-LOW NOISE FAN — 135mm fluid dynamic bearing fan with Zero Fan Mode is completely silent when under 50% load.
- HIGH-QUALITY CONSTRUCTION — 100% premium Japanese capacitors improve hold-up time and minimal ripple noise, ensuring reliable and stable power delivery.
- HIGH EFFICIENCY, LOW NOISE — Awarded certifications of 80 PLUS Gold Efficiency, Cybenetics Gold Efficiency, and Cybenetics A Noise Level.
- ATX 3.1 — Compliant with the ATX 3.1 standard to fuel high-performance PC components with stability, efficiency, and power spike resistance.
- 40 SERIES READY — Durable, heat-resistant 12V-2x6 connector pumps up to 600 watts to NVIDIA GeForce RTX 40 Series graphics cards.
Our ranking system
At BestChoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
