Thermaltake GF1 Fully Modular ATX 850W Power Supply
4.4Editor score
80 Plus Gold Certified
Smart Zero 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 flexibility. We analyze the best options available to ensure your system runs efficiently.
We compared ten top-rated models based on efficiency, noise levels, and build quality. Our review focuses on units that meet modern standards like ATX 3.1 and PCIe 5.1 readiness for future-proofing.
Each pick highlights key strengths and potential trade-offs for different budgets. Prices and availability can change quickly, so verify current details before purchasing your next power supply unit.
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 Cables
ASUS ROG Strix 1000W Platinum Fully Modular Power Supply
4.8Editor score
GaN MOSFET Technology
GPU First Voltage Stabilizer
ROG Heatsinks
Top 10 Best Fully Modular Power Supplies for Gaming Pcs in 2026 Compared
Here is a side-by-side comparison of all ten power supplies reviewed in this guide. This table helps you quickly identify the right model for your specific system requirements.
ProductsSpecificationsEditor scorePrice
Best Budget
MSI MAG A850GL PCIE5
850W Capacity
80 Plus Gold
ATX 3.1 Ready
10 Year Warranty
4.5Editor score
Editor's Choice
CORSAIR RM850e (2025)
850W Capacity
105°C Capacitors
Low Noise Fan
ATX 3.1
4.7Editor score
Editor's Choice
CORSAIR RM850x
850W Capacity
Cybenetics Gold
Native 12V-2×6
Embossed Cables
4.7Editor score
CORSAIR RM1000x
1000W Capacity
Cybenetics Gold
Native 12V-2×6
Embossed Cables
4.5Editor score
Thermaltake GF1
850W Capacity
Zero RPM Mode
140mm Fan
DC to DC
4.4Editor score
be quiet! Pure Power 13 M
1000W Capacity
Cybenetics Platinum
12V-2×6 Native
LLC Topology
4.7Editor score
ASRock Steel Legend SL-850G
850W Capacity
Japanese Capacitors
135mm FDB Fan
5V Boost Function
4.5Editor score
ASUS ROG Strix 1000W Platinum
1000W Capacity
GaN MOSFET
GPU First Voltage
0dB Tech
4.8Editor score
ASUS TUF Gaming 1000W Gold
1000W Capacity
Military Grade
Dual Ball Bearings
PCB Coating
4.7Editor score
CORSAIR HX1500i
1500W Capacity
iCUE Software
140mm FDB Fan
Zero RPM Mode
4.5Editor score
1. CORSAIR RM850x – Best Overall Fully Modular Power Supply for Gaming PCs
CORSAIR RM850x
850W Continuous Power
Cybenetics Gold Rated
12V-2×6 Native
Fully Modular Cables
The CORSAIR RM850x stands out as a top choice for gamers needing reliability. It holds a solid 4.7 rating and meets the latest ATX 3.1 standards. This unit delivers power efficiently while keeping noise levels low during intense gaming sessions.
Pros
- Highly efficient power delivery
- Silent operation under load
- Future proof connectivity
- Excellent build quality
Cons
- Premium price point
- Large cable length
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Its Cybenetics Gold certification ensures low power consumption and cooler temperatures. The native 12V-2×6 connector means no adapters are needed for modern graphics cards. The embossed cables are flexible and easy to route for a clean build.
While it costs more than basic units, the performance justifies the investment. The only minor drawback is the length of some cables which might be excessive in smaller cases. Overall, it offers peace of mind for high end systems.
Buyers seeking a balance of power and silence should consider this model. It is ideal for systems with latest generation GPUs. The long warranty and robust design make it a safe long term choice.
Efficiency and Noise Control
The unit operates quietly even under heavy load thanks to optimized fan curves. This ensures your gaming experience remains immersive without distracting fan noise.
Future Proof Connectivity
With PCIe 5.1 support and native 12V-2×6 connectors, this supply is ready for upcoming hardware. You won't need to replace it when you upgrade your graphics card.
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2. ASUS ROG Strix 1000W Platinum – Best Premium Fully Modular Power Supply for Gaming PCs
ASUS ROG Strix 1000W Platinum
1000W Power Output
80 Plus Platinum Certified
GaN MOSFET Tech
GPU First Voltage Stabilizer
This power supply offers top tier performance for enthusiasts who demand the best. With an 4.8 rating, it brings premium features like GaN MOSFET technology. This tech improves efficiency by up to thirty percent compared to traditional units.
Pros
- Superior power efficiency
- Stabilized GPU voltage
- High capacity for rig
- Long warranty period
Cons
- Expensive compared to peers
- Overkill for entry builds
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The GPU First Intelligent Voltage Stabilizer enhances voltage delivery to your graphics card. This leads to smoother gameplay and unwavering performance during demanding tasks. The large ROG heatsinks help keep internal components cool effectively.
The price is high but justified for high end workstations or gaming rigs. It provides 1000W of continuous power which supports multi GPU setups. If you need maximum stability this unit delivers it consistently.
This is the perfect choice for those who want the absolute best quality. The 10-year warranty adds significant value. It ensures your system stays protected against power fluctuations for years.
Advanced Cooling Features
Dual ball fan bearings last twice as long as sleeve bearings. The 0dB technology allows for silence when gaming lightly.
Internal Design Quality
Organized internal layout improves airflow and reduces heat. This design choice enhances reliability and longevity.
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3. Thermaltake GF1 – Best Budget Fully Modular Power Supply for Gaming PCs
Thermaltake GF1
850W Continuous Power
80 Plus Gold Rated
Smart Zero Fan Mode
140mm Fluid Bearing
The Thermaltake GF1 provides excellent value for budget conscious builders. It holds a 4.4 rating and offers solid performance without breaking the bank. The 80 Plus Gold certification ensures efficient power usage and cooler running temps.
Pros
- Affordable price point
- Quiet operation mode
- Efficient power delivery
- Single rail design
Cons
- Basic feature set
- Less premium materials
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Its Smart Zero Fan technology minimizes noise by stopping the fan at low loads. The 140mm fluid bearing fan ensures quiet operation when needed. It features a high amperage single +12V rail for stable GPU performance.
While it lacks some high end features, it covers all essential needs. The protections are robust enough for standard gaming setups. It is a reliable choice for those prioritizing cost over extras.
Buyers looking for a no fuss reliable unit should pick this one. It handles 850W easily for most single GPU builds. The modular design helps keep your case tidy and organized.
Smart Fan Control
The fan stops completely under low load for silence. This feature is great for idle or light usage periods.
Rail Stability
A single +12V rail provides consistent power to components. This design reduces voltage drops during high load spikes.
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4. MSI MAG A850GL PCIE5 – Compact Fully Modular Power Supply for Gaming PCs
MSI MAG A850GL PCIE5
850W Power Output
80 Plus Gold
Dual Color Cable
Compact Form Factor
MSI offers a solid option with the MAG A850GL PCIE5. It meets ATX 3.1 standards and supports PCIe 5.1 natively. The 10 year warranty shows the manufacturer's confidence in reliability. It is designed for compact gaming setups.
Pros
- Compact design
- Native PCIe 5.1
- Solid warranty
- Dual color cables
Cons
- Limited availability
- Short cables
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The native 12V-2×6 cable features dual color design for easier identification. This helps prevent connection errors during installation. It handles transient power excursions from modern GPUs effectively. The compact size fits many cases well.
Some users might find the cables shorter than other units. This can be a limitation for large cases with distant mounts. However, the power quality remains consistent and safe. It is a good choice for new builds.
This unit is recommended for those needing a reliable mid tier PSU. The ATX 3.1 compliance ensures future compatibility. It offers a strong balance of features for the price point.
Cable Clarity
Dual color 12V-2×6 cable prevents confusion. This design ensures correct connections every time.
Space Efficiency
Compact design fits into tighter chassis easily. This leaves more room for cable routing inside.
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5. CORSAIR RM850e – Reliable Fully Modular Power Supply for Gaming PCs
CORSAIR RM850e
850W Power Output
105°C Capacitors
Rifle Bearing Fan
ATX 3.1 Ready
The CORSAIR RM850e is a solid choice for modern builds. It holds a 4.7 rating and meets ATX 3.1 standards. The 105°C rated capacitors ensure steady power delivery over time. It keeps noise down with a specially calculated fan curve.
Pros
- High temp capacitors
- Silent operation
- Future ready design
- Fully modular
Cons
- Fewer features than x series
- Standard cables
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The rifle bearing fan provides durability and low acoustic levels. Modern Standby compatibility allows for fast wake from sleep. This makes it ideal for systems used frequently without shutdowns. It is reliable and efficient.
Compared to the x series, it has fewer premium cable features. However, the core performance remains strong. It handles power excursions well and protects components from spikes. The design is practical for most users.
This PSU is great for those wanting Corsair quality without extra cost. The 850W capacity covers most high end GPUs. It is a smart pick for balanced system builds.
Component Reliability
105°C capacitors ensure stability in high heat. This extends the lifespan of the unit.
Noise Management
Fan curve keeps noise low even at full load. You won't hear fan whine during gaming.
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6. CORSAIR RM1000x – High Capacity Fully Modular Power Supply for Gaming PCs
CORSAIR RM1000x
1000W Power Output
Cybenetics Gold Rated
12V-2×6 Native
Embossed Cables
This unit is built for systems demanding high power output. It delivers 1000W continuous power with reliable stability. The Cybenetics Gold certification ensures low consumption. The embossed cables are ultra flexible for easy cable management.
Pros
- High wattage output
- Excellent efficiency
- Flexible cables
- Low noise
Cons
- Heavy unit
- Pricey
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Native 12V-2×6 connectors simplify GPU connections. The 1000W rating supports future high end upgrades. It resists transient power spikes to protect your components. Performance remains consistent under heavy loads.
It is physically heavy due to the robust internal components. This may require sturdy case mounting points. The price is higher but reflects the power capacity. It is worth it for high end users.
Buyers needing extra wattage for multi GPU setups should consider this. It offers room for growth and component upgrades. The build quality is top tier for a reason.
Flexible Cable Management
Embossed cables are sleek and easy to bend. This helps maintain airflow in your case.
Transient Protection
Resists power spikes effectively for system safety. This prevents shutdowns or hardware damage.
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7. be quiet! Pure Power 13 M – Quiet Fully Modular Power Supply for Gaming PCs
be quiet! Pure Power 13 M
1000W Power Output
Cybenetics Platinum
Zero RPM Cooling
LLC Topology
The Pure Power 13 M delivers outstanding silence. It holds a 4.7 rating and Cybenetics Platinum efficiency. The Semi Passive Zero RPM cooling ensures silence under low loads. The fan stops completely until more cooling is needed.
Pros
- Very quiet operation
- High efficiency rating
- Zero RPM mode
- 12V-2×6 Native
Cons
- Cable length limits
- Premium pricing
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It handles massive transient loads easily up to double power. The LLC topology provides best in class voltage regulation. This ensures stability for quiet systems or media PCs. It meets ATX 3.1 specs for future proofing.
Cable management can be tricky with some lengths being shorter. However, the build quality is exceptional. The airflow optimized fan blades reduce noise significantly. It is a great choice for home theaters.
Choose this if silence is your top priority. It offers reliable power without disturbing your peace. The quality justifies the cost for demanding users.
Silent Operation
Fan turns off completely under low load. This makes the PC virtually silent during tasks.
Efficiency
Platinum efficiency reduces power waste. This saves on electricity bills over time.
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8. ASRock Steel Legend SL-850G – Efficient Fully Modular Power Supply for Gaming PCs
ASRock Steel Legend SL-850G
850W Power Output
Japanese Capacitors
5V Boost Function
135mm FDB Fan
This unit offers strong value with high quality parts. It uses 100% Japanese capacitors for stability. The Cybenetics Lambda A+ acoustic certification ensures near-silent operation. It provides 850W continuous power for high end setups.
Pros
- Japanese capacitor quality
- Acoustic certification
- Affordable price
- Boost function
Cons
- Less known brand
- Complex setup
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The 5V BOOST function compensates for voltage drops. This maintains optimal performance during transient spikes. The 135mm fan uses fluid dynamic bearings for long life. It includes a dual color 12V-2×6 connector.
While not as famous as other brands, it performs well. The warranty matches top tier offerings. It is an excellent choice for budget builds needing quality. The build is robust and reliable.
Buyers seeking reliability without the premium brand markup should try this. It handles modern GPUs effectively. The acoustic performance is impressive for the price.
Acoustic Certification
A+ rating ensures noise below 20 dBA. This makes it ideal for quiet rooms.
Voltage Support
Boost function keeps voltage stable during spikes. This prevents unexpected system resets.
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9. ASUS TUF Gaming 1000W Gold – Durable Fully Modular Power Supply for Gaming PCs
ASUS TUF Gaming 1000W Gold
1000W Power Output
Military Grade Components
Axial Tech Fan
PCB Coating
The TUF Gaming 1000W Gold brings military grade durability. It holds a 4.7 rating for performance. The PCB coating protects against moisture and dust. This ensures long term reliability in harsh environments.
Pros
- Military grade build
- Durable bearings
- Protective coating
- Good efficiency
Cons
- Heavy unit
- Cable length
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Axial-tech fans provide excellent airflow efficiency. Dual ball bearings last twice as long as standard types. It is ATX 3.1 compatible with native 16-pin cables. The efficiency is high for Gold rated units.
The build is tough and designed for longevity. This makes it a great choice for gamers. It handles 1000W continuously for demanding rigs. The warranty provides extra peace of mind.
This is a strong option for those valuing durability. It withstands heavy usage cycles well. The components ensure consistent power for gaming.
Durability Features
PCB coating protects against environmental hazards. This extends the unit's lifespan.
Fan Quality
Dual ball bearings ensure long lifespan. This reduces maintenance needs over time.
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10. CORSAIR HX1500i – Top Tier Fully Modular Power Supply for Gaming PCs
CORSAIR HX1500i
1500W Power Output
iCUE Software Support
Zero RPM Fan
140mm FDB Fan
This unit is designed for extreme high-end power needs. It offers 1500W continuous power for massive systems. The iCUE software allows detailed monitoring. You can set custom fan curves via software easily.
Pros
- High wattage capacity
- Software control
- Silent operation
- Reliable power
Cons
- Very expensive
- Only for extremes
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The Zero RPM fan mode switches off at low loads. This ensures near-silent operation for daily tasks. The 140mm FDB fan lasts for many years. It complies with ATX 3.1 for next-gen GPUs.
It is an investment for those needing maximum power. It handles high loads with ease. The software adds value for enthusiasts. It is overkill for standard builds.
Buyers with extreme workstations should consider this model. The power headroom is massive. It ensures every component gets stable electricity.
Software Integration
iCUE software allows precise fan control. You can monitor power usage on demand.
Fan Performance
Fluid dynamic bearing ensures smooth operation. This reduces wear on the unit.
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Buying Guide – How to Choose the Best Fully Modular Power Supply for Gaming PCs
Selecting the right power supply requires understanding several key factors. This guide breaks down what to look for before you buy a new unit.
Power Capacity
Determine your system's total power draw by adding up all components. A good rule is to choose a unit that meets your needs with some extra headroom. This ensures stability during transient spikes.
Always buy a PSU with enough wattage for your CPU and GPU. Extra capacity helps prevent throttling and system crashes.
Efficiency Ratings
Look for 80 Plus Gold or Platinum ratings for better efficiency. Higher efficiency means less wasted energy and lower electricity bills. It also reduces heat inside the computer case.
A higher efficiency rating ensures the unit runs cooler. This extends the lifespan of the components inside.
Modular Cabling
Fully modular cables allow you to connect only what is needed. This improves airflow by reducing clutter inside the case. It makes installation and upgrades much easier.
Choose fully modular units for better cable management. This helps maintain a clean and organized system.
ATX Standards
Ensure your power supply is ATX 3.1 compatible for future proofing. This standard supports newer GPUs with higher power spikes. It provides better protection against electrical surges.
Pick a unit that meets ATX 3.1 standards. This ensures compatibility with modern hardware.
Noise Levels
Check the noise ratings of the cooling fan. Units with fan stop features are quieter when the system is idle. This is important for living room or office builds.
Select a PSU with low decibel ratings for silence. Noise levels matter for your comfort.
Build Quality
Look for units using high quality components like Japanese capacitors. These offer better reliability and longer lifespans. Check for warranty terms as they reflect manufacturer confidence.
Better internal components lead to longer reliability. Warranty length should match your expectations.
Future Compatibility
Verify that the unit has PCIe 5.1 connectors for modern GPUs. This avoids the need for adapter cables that reduce safety. It prepares your system for the latest hardware.
Choose a supply with native new connectors. This ensures safe connection for your graphics card.
Price
Set a budget but prioritize reliability over cheap models. A good power supply protects all other components in your PC. Cheap units may fail and damage expensive hardware.
Invest in quality to protect your investment. The cost is small compared to replacing damaged parts.
How to Use and Care for Your Fully Modular Power Supply
Connect only the necessary cables to ensure proper airflow inside your case. Route cables neatly behind the motherboard tray to prevent dust buildup. This helps maintain optimal cooling for your components.
Regularly clean dust from the unit's vents using compressed air. Ensure the area around the power supply remains free of debris. This prevents overheating and maintains long term reliability.
Update your system BIOS and drivers to support ATX 3.1 standards. This ensures the power supply works correctly with your motherboard. Proper software settings enhance overall system stability.
Frequently Asked Questions
What does fully modular mean for a power supply?
Fully modular means all cables are detachable from the power supply unit. This allows you to connect only the cables your system needs. It improves cable management and airflow inside the PC case.
Are ATX 3.1 power supplies worth the upgrade?
Yes, they provide better protection against power spikes. They also support newer GPUs with higher power requirements. This future proofs your build for upcoming hardware releases.
Can I use a non-modular PSU for a gaming PC?
You can, but cable management will be more difficult. Excess cables can block airflow and increase heat inside the case. Modular units are preferred for cleaner and safer builds.
How much extra wattage should I get for my PC?
It is recommended to get at least 20% more wattage than your system needs. This handles transient power spikes from high end GPUs. It also leaves room for future component upgrades.
Does a higher efficiency rating mean better performance?
Yes, it means less energy is wasted as heat. This lowers electricity costs and keeps the unit cooler. Efficient units often come with better internal components and warranties.
Why is the warranty important when buying a PSU?
A long warranty indicates high build quality and reliability. It protects you against early failures that can damage hardware. Always check the warranty terms before purchasing a unit.
Final Thoughts on Choosing the Best Fully Modular Power Supply for Gaming PCs
We reviewed ten top models ranging from budget to premium options. Each offers unique strengths like efficiency, silence, or power capacity. Choosing the right one depends on your specific system needs.
Prioritize reliability and future proofing like ATX 3.1 standards. A good power supply protects your entire system from electrical issues. It is worth investing in a quality unit for peace of mind.
Check current prices and availability before finalizing your purchase. Specifications can change over time so verify details online. We hope this guide helps you find the perfect power supply.