Thermaltake GF1 Fully Modular ATX 850W Power Supply
4.4Editor score
80 Plus Gold certified
Zero RPM fan technology
Single 12V rail
In this guide
Choosing the right power supply is critical for any gaming PC build. A fully modular unit offers superior cable management and cleaner airflow inside your case.
We evaluated ten top-rated models based on efficiency ratings, build quality, and compatibility with modern standards like ATX 3.1 and PCIe 5.1.
Each pick highlights key strengths and trade-offs to help you decide. Note that availability and pricing can change frequently on retailer sites.
Top 3 Picks for Best Fully Modular Power Supplies for Gaming Pcs
CORSAIR RM850x ATX 3.1 PCIe 5.1 Ready Fully Modular 850W Power Supply
4.7Editor score
Native 12V-2×6 connector
Cybenetics Gold efficiency
Embossed flexible cables
ASUS ROG Strix 1000W Platinum (Fully Modular Power Supply
4.8Editor score
GaN MOSFET efficiency
GPU-First voltage stabilizer
Dual ball fan bearings
Top 10 Best Fully Modular Power Supplies for Gaming Pcs in 2026 Compared
The following table provides a side-by-side comparison of all ten products evaluated in this guide to help you quickly identify key specifications.
ProductsSpecificationsEditor scorePrice
Editor's Choice
MSI MAG A850GL PCIE5
850W power output
ATX 3.1 Ready
Native 12V-2×6
10 Year Warranty
4.5Editor score
Editor's Choice
CORSAIR RM850e (2025)
850W continuous power
ATX 3.1 Certified
Low noise operation
Modern Standby ready
4.7Editor score
Best Budget
CORSAIR RM850x
850W capacity
Cybenetics Gold Rated
Native 12V-2×6
Ultra-flexible cables
4.7Editor score
CORSAIR RM1000x
1000W output
ATX 3.1 Compliant
Native 12V-2×6
Gold efficiency rating
4.5Editor score
Thermaltake GF1 Fully Modular ATX 850W Power Supply
850W capacity
Ultra quiet 140mm fan
Zero RPM mode
80 Plus Gold
4.4Editor score
be quiet! Pure Power 13 M 1000W Power Supply
1000W power
Cybenetics Platinum
ATX 3.1 Spec
Semi-passive cooling
4.7Editor score
ASRock Steel Legend SL-850G
850W output
Cybenetics Platinum
Japanese Capacitors
135mm FDB Fan
4.5Editor score
ASUS ROG Strix 1000W Platinum (Fully Modular Power Supply
1000W power
80 Plus Platinum
GaN MOSFET
GPU-First stabilizer
4.8Editor score
ASUS TUF Gaming 1000W Gold
1000W capacity
Military-Grade Components
ATX 3.1 Compatible
10 Year Warranty
4.7Editor score
CORSAIR HX1500i (2025)
1500W output
ATX 3.1 Certified
140mm FDB Fan
iCUE Software
4.5Editor score
1. MSI MAG A850GL PCIE5 – Best Compact Gold Unit
MSI MAG A850GL PCIE5
Compact Gaming 850W
ATX 3.1 Ready
Native 12V-2×6
80 Plus Gold
The MSI MAG A850GL PCIE5 stands out as a reliable choice for modern gaming PCs needing 850 watts. It holds a strong rating for its balance of performance and cost in the current market.
Pros
- Compact size for small cases
- Native 12V-2×6 cable
- Dual-color cable design
- 10 year warranty
- Affordable Gold rating
Cons
- Limited airflow features
- Fewer connector options
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Its standout quality is full compliance with ATX 3.1 and PCIe 5.1 standards. The native dual-color 12V-2×6 cable ensures safe connections for next-generation graphics cards without adapters.
Trade-offs include fewer high-end features like advanced software control or top-tier efficiency metrics. However, these are acceptable given its price point and solid build quality.
Buyers seeking a compact, future-proof unit should choose this model. It delivers stable power efficiently for high-end gaming systems on a budget.
Future Proof Compatibility
Compliance with ATX 3.1 ensures your power supply supports new GPUs with high transient power needs.
Clean Cable Management
The fully modular design and dual color cables make installation straightforward and improve internal case airflow.
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2. CORSAIR RM850e – Best Low Noise Efficiency
CORSAIR RM850e (2025)
850W Reliable Power
120mm Rifle Fan
105C Capacitors
Modern Standby Ready
The CORSAIR RM850e is designed for users who prioritize quiet operation alongside modern power standards. It offers excellent reliability for daily gaming tasks and content creation.
Pros
- Quiet rifle bearing fan
- Intel ATX 3.1 Certified
- High temp capacitors
- Fast wake from sleep
- Fully modular design
Cons
- Slightly higher price
- Fewer cable extensions
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Key strengths include the Intel ATX 3.1 certification and low-noise fan curve. The 105C rated capacitors ensure steady electrical performance even under heavy loads.
Some users might find the price slightly higher than competitors. This is acceptable due to the robust component quality and efficient power delivery.
Buyers wanting a quiet, reliable system for streaming or gaming should choose this unit. It handles transient power spikes with ease.
Quiet Operation
A specially calculated fan curve keeps noise levels down even when the system is under full load.
Modern Efficiency
Modern Standby compatibility allows for faster wake times and better low load efficiency for daily use.
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3. CORSAIR RM850x – Best Value Premium
CORSAIR RM850x
850W Low Noise
Cybenetics Gold Eff
Native 12V-2×6
Embossed Cables
The CORSAIR RM850x delivers high performance with exceptional cable management features. It is a top choice for builders who value aesthetics and clean internal airflow.
Pros
- Embossed flexible cables
- Native 12V-2×6
- Cybenetics Gold rated
- ATX 3.1 Compliant
- Low noise operation
Cons
- No software monitoring
- Standard fan bearing
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Its standout feature is the embossed low-profile cables that make routing easy. The native 12V-2×6 connector provides direct support for the latest high-end GPUs.
While it lacks advanced software features found in higher tiers, the efficiency is excellent. This trade-off is minimal for most general gaming applications.
Buyers seeking a premium build quality at a reasonable price should choose this model. It balances performance and efficiency perfectly.
Premium Cable Management
Embossed cables are ultra-flexible and look great inside your case, making installation a breeze.
Next Gen Support
Compliance with ATX 3.1 ensures you are ready for future graphics cards with higher power demands.
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4. CORSAIR RM1000x – Best 1000W Upgrade
CORSAIR RM1000x
1000W Output
Cybenetics Gold Eff
Native 12V-2×6
Embossed Cables
The CORSAIR RM1000x is ideal for gamers needing extra headroom for multiple GPUs or high-end components. It shares the reliable design of the RM850x but with higher capacity.
Pros
- 1000W power capacity
- Embossed flexible cables
- Native 12V-2×6
- ATX 3.1 Ready
- Gold efficiency
Cons
- Higher price than 850W
- Requires larger case
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Key strengths include full ATX 3.1 compliance and native 12V-2×6 support. The embossed cables ensure clean routing even in complex builds requiring many connectors.
The price is higher than lower wattage options. This is justified by the increased power capability and consistent quality from a trusted brand.
Buyers planning high-end workstation or gaming builds should choose this unit. It provides stable power for demanding tasks.
High Capacity Power
1000 watts of continuous power handles the most demanding GPUs and CPUs with ease and efficiency.
Clean Build Aesthetics
The low-profile combs and flexible cables allow for excellent cable management inside any standard ATX case.
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5. Thermaltake GF1 – Best Affordable Silent Unit
Thermaltake GF1 Fully Modular ATX 850W Power Supply
850W Power Supply
Zero RPM Fan Mode
140mm Fluid Bearing
Single 12V Rail
The Thermaltake GF1 offers incredible value for those prioritizing silence without breaking the bank. It is a strong contender for quiet home office gaming setups.
Pros
- Zero RPM fan mode
- Ultra quiet 140mm fan
- High amperage 12V rail
- 80 Plus Gold cert
- Fully modular design
Cons
- Older standards support
- Basic warranty terms
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Key strengths include the Smart Zero Fan technology that stops the fan at low loads. The fluid bearing design ensures longevity and minimal noise during operation.
While it lacks some modern ATX 3.1 features, it is reliable for current gen systems. The price makes it one of the most attractive options.
Buyers wanting a silent, budget-friendly unit should choose this model. It provides stable power for standard gaming PCs efficiently.
Silent Operation
The Zero RPM mode keeps the fan off during light loads for near-silent performance in your room.
Efficient Design
80 Plus Gold certification ensures high efficiency resulting in lower electricity bills and less heat.
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6. be quiet! Pure Power 13 M – Best Platinum Efficiency
be quiet! Pure Power 13 M 1000W Power Supply
1000W Platinum PSU
94.4% Efficiency
Native 12V-2×6
LLC Topology
The be quiet! Pure Power 13 M delivers exceptional efficiency and power handling. It is a top choice for systems demanding high stability and low noise.
Pros
- Cybenetics Platinum rated
- Semi-passive zero rpm
- Handles power excursions
- Native 12V-2×6
- Quiet operation
Cons
- Slightly pricier option
- Limited fan customization
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Key strengths include Platinum efficiency and full ATX 3.1 compliance. It can handle massive transient loads without voltage drops or interruptions during gaming.
The price is competitive for the performance level. Users get premium stability and quiet operation which justifies the investment.
Buyers wanting a future-proof system should choose this model. It offers best-in-class voltage regulation for your PC.
Power Stability
LLC topology provides stable voltage regulation which protects your components from power fluctuations.
Extreme Efficiency
With up to 94.4% efficiency, you save on power costs and reduce heat inside your PC case.
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7. ASRock Steel Legend SL-850G – Best Value Platinum
ASRock Steel Legend SL-850G
850W Platinum Eff
Japanese Capacitors
135mm FDB Fan
Native 12V-2×6
The ASRock Steel Legend SL-850G offers incredible specs for the price. It combines high-end efficiency with modern standards for a great build option.
Pros
- Cybenetics Platinum rated
- 100% Japanese caps
- Dual color 12V-2×6
- 5V BOOST function
- Fully modular
Cons
- Limited availability
- Newer brand reputation
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Key strengths include Japanese capacitors and native ATX 3.1 support. The 5V BOOST function helps maintain stability during voltage drops in demanding scenarios.
While the brand is newer to power supplies, the component quality is robust. This makes it a safe choice for careful builders.
Buyers seeking premium components at a low price should choose this unit. It offers excellent performance for modern gaming.
High Quality Components
Built with 100% Japanese capacitors for exceptional reliability and long term performance stability.
Modern Standards
Fully compliant with ATX 3.1 and PCIe 5.1 to support the latest graphics cards and motherboards.
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8. ASUS ROG Strix 1000W – Best High End Choice
ASUS ROG Strix 1000W Platinum (Fully Modular Power Supply
1000W Platinum Power
GaN MOSFET Tech
GPU-First Stabilizer
Dual Ball Bearings
The ASUS ROG Strix 1000W is a top-tier unit for enthusiasts demanding the highest efficiency and stability. It is built to last and perform flawlessly.
Pros
- GaN MOSFET efficiency
- GPU-First stabilizer
- Dual ball bearings
- Large ROG heatsinks
- Platinum certification
Cons
- Premium price point
- Requires premium case
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Key strengths include GaN MOSFETs and a patented GPU-First voltage stabilizer. These ensure your graphics card gets clean power for smoother gameplay.
The price is high but justified by the engineering. Features like dual ball bearings promise a long lifespan for your build.
Buyers wanting ultimate performance should choose this model. It is a premium choice for serious gamers.
Superior Cooling
Large ROG heatsinks cover critical components to deliver lower temperatures and reduced noise levels.
Advanced Stability
GPU-First voltage sensing enhances delivery by up to 45% for unwavering performance under load.
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9. ASUS TUF Gaming 1000W – Best Durable Option
ASUS TUF Gaming 1000W Gold
1000W Gold PSU
Military-Grade Caps
PCB Protective Coating
Dual Ball Fan
The ASUS TUF Gaming 1000W prioritizes durability with military-grade components and protective coatings. It is designed to withstand extreme conditions and long usage.
Pros
- Military-grade components
- PCB coating protection
- Dual ball bearings
- Axial-tech fan
- 10 Year warranty
Cons
- Slightly louder than premium
- Basic software
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Key strengths include the PCB coating and dual ball bearings. These features protect against dust and moisture while extending the unit's lifespan.
It may not have the absolute quietest fan. However, the reliability and warranty make it a great choice for rugged builds.
Buyers seeking durability should choose this model. It provides robust protection for your PC components.
Durability Focus
Military-grade components and PCB coating protect against moisture and dust for long term reliability.
Reliable Cooling
Axial-tech fan and dual ball bearings ensure consistent cooling and reduced noise over time.
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10. CORSAIR HX1500i – Best High Wattage
CORSAIR HX1500i (2025)
1500W High Watt
iCUE Software
140mm FDB Fan
Zero RPM Mode
The CORSAIR HX1500i offers massive power for dual GPU setups or heavy workstation loads. It is a high-end choice for those who need every watt.
Pros
- 1500W continuous power
- iCUE Software support
- 140mm FDB fan
- Zero RPM mode
- Fully modular design
Cons
- Very high cost
- Overkill for most
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Key strengths include iCUE software and a large 140mm fan. The software allows deep control over fan curves and power rail protection.
The price and size are significant. However, for extreme needs this unit provides unmatched stability and flexibility.
Buyers with extreme power needs should choose this unit. It handles the most demanding configurations effortlessly.
Software Control
CORSAIR iCUE software lets you monitor settings and toggle protections on the fly.
Silent Operation
Zero RPM mode keeps the fan off at low loads for near silent operation in daily tasks.
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Buying Guide – How to Choose the Best Fully Modular Power Supplies for Gaming Pcs
Selecting the right unit involves evaluating several technical factors to ensure compatibility and longevity.
Wattage Capacity
Choose a unit with enough wattage to power your CPU and GPU with at least 20 percent headroom for efficiency.
Ensure your PSU capacity meets current and future component needs for stable performance.
ATX 3.1 Standard
Look for ATX 3.1 certification to ensure support for new GPUs with high transient power spikes.
Compliance ensures your system handles modern hardware demands without power issues.
Efficiency Rating
Gold or Platinum efficiency means less energy waste and lower electricity costs over time.
Higher efficiency reduces internal heat and improves overall system longevity.
Cable Design
Fully modular cables allow you to connect only what is needed for better airflow and aesthetics.
Flat ribbon cables make routing inside tight cases easier than bulky round ones.
Warranty Period
A longer warranty like 10 years indicates the manufacturer is confident in the quality of their components.
Check warranty terms to ensure you are protected against early failures.
Build Quality
Units with Japanese capacitors and robust internal layouts tend to last longer and perform better.
Look for brands with a strong reputation for reliability in the PC market.
How to Use and Care for Your Fully Modular Power Supplies for Gaming Pcs
Always connect the native ATX and PCIe cables securely to your motherboard and GPU before installing the unit.
Keep the intake vents clear of dust to ensure proper airflow and prevent overheating over time.
If using a Zero RPM fan mode, ensure your case has good passive ventilation to support silent operation.
Frequently Asked Questions
Is a fully modular power supply worth the extra cost?
Yes, a fully modular unit allows for cleaner cable management and better airflow. This improves both the aesthetics and cooling performance of your gaming PC build significantly.
What is ATX 3.1 and why does it matter?
ATX 3.1 is a modern standard designed to support high power transient spikes from new graphics cards. It ensures your power supply can handle sudden power demands without shutting down.
Do I need a specific cable for my new GPU?
Most new GPUs require a 12V-2×6 connector. Ensure your unit has this native cable or a verified adapter to connect safely.
How do I know what wattage to choose?
Calculate your total system power usage and add 20 percent. This gives you enough headroom for peak loads and efficiency.
What does Gold efficiency mean?
Gold efficiency means the unit wastes less energy as heat. It is more efficient than Bronze but slightly less than Platinum.
Are 10 year warranties standard for these units?
High-end units often come with 10 year warranties. Standard units may have 5 or 7 year warranties depending on the manufacturer.
Final Thoughts on Choosing the Best Fully Modular Power Supplies for Gaming Pcs
We reviewed ten top options ranging from budget friendly to premium models for every build need.
Prioritize ATX 3.1 compliance and wattage headroom to ensure your system is future proof.
Always check current availability and stock before finalizing your purchase to secure the best deal.