Thermaltake GF1 Fully Modular ATX 850W Power Supply
4.4Editor score
80 Plus Gold certified
Zero RPM fan technology
Fully modular design
In this guide
Building a high-performance gaming PC requires a reliable power source. Fully modular power supplies offer the best cable management and flexibility for modern builds.
We compared ten top-rated units based on efficiency, noise levels, and support for the latest ATX 3.1 and PCIe 5.1 standards to find the best options.
Each pick highlights key features and trade-offs to help you decide. Note that availability and pricing may change over time as new models arrive.
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
Cybenetics Gold efficiency
Native 12V-2×6 connector
Embossed low-profile cables
ASUS ROG Strix 1000W Platinum (Fully Modular Power Supply
4.8Editor score
80 Plus Platinum certified
GPU-First voltage stabilizer
GaN MOSFET technology
Top 10 Best Fully Modular Power Supplies for Gaming Pcs in 2026 Compared
This side-by-side comparison highlights key specifications and features for each fully modular power supply to help you find the perfect match for your gaming rig.
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
ATX 3.1 certified
Low noise fan
105C capacitors
4.7Editor score
Editor's Choice
CORSAIR RM850x ATX 3.1
850W capacity
Cybenetics Gold rated
Native 12V-2×6
Embossed cables
4.7Editor score
CORSAIR RM1000x ATX 3.1
1000W capacity
Cybenetics Gold rated
Native 12V-2×6
Embossed cables
4.5Editor score
Thermaltake GF1 Fully Modular
850W capacity
80 Plus Gold
Zero RPM fan
140mm fluid bearing
4.4Editor score
be quiet! Pure Power 13 M
1000W capacity
80 Plus Gold
ATX 3.1 compliant
Semi-passive cooling
4.7Editor score
ASRock Steel Legend SL-850G
850W capacity
Cybenetics Platinum
10 Year warranty
Japanese capacitors
4.5Editor score
ASUS ROG Strix 1000W Platinum
1000W capacity
80 Plus Platinum
GaN MOSFET
GPU-First voltage
4.8Editor score
ASUS TUF Gaming 1000W Gold
1000W capacity
Military-grade components
ATX 3.1 ready
10 Year warranty
4.7Editor score
CORSAIR HX1500i (2025)
1500W capacity
ATX 3.1 certified
Zero RPM mode
iCUE software
4.5Editor score
1. CORSAIR RM850x – Best Overall Fully Modular Power Supplies for Gaming Pcs
CORSAIR RM850x
Cybenetics Gold rated
ATX 3.1 compliant
Native 12V-2×6
Embossed flat cables
The CORSAIR RM850x stands out as a top-tier choice for gaming rigs needing reliable power. It holds a strong rating from users and delivers Cybenetics Gold efficiency for optimal performance.
Pros
- High efficiency rating
- Native PCIe 5.1 cable
- Quiet operation
- Flexible cables
- Reliable brand
Cons
- Premium pricing
- Large cable bundle
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Its ATX 3.1 compliance ensures support for the latest GPU spikes while the native 12V-2×6 connector eliminates the need for adapters. The embossed cables make routing easy.
While it is pricier than budget units, the build quality and noise performance justify the cost. The 10-year warranty adds significant peace of mind for long-term use.
Buy this if you want a balanced mix of efficiency and future-proofing. It is ideal for high-end gaming PCs where silence and stability matter.
Future-Proof Connectivity
The native 12V-2×6 connector ensures compatibility with next-gen graphics cards without adapters.
Efficiency and Cooling
Cybenetics Gold efficiency means less wasted power and cooler operation under load.
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2. ASUS ROG Strix 1000W Platinum – Best Premium Fully Modular Power Supplies for Gaming Pcs
ASUS ROG Strix 1000W Platinum
80 Plus Platinum
GaN MOSFET tech
GPU-First voltage
10-Year warranty
The ASUS ROG Strix 1000W Platinum is a powerhouse designed for enthusiasts. It achieves an exceptional rating thanks to advanced GaN MOSFET technology and robust internal design.
Pros
- Superior efficiency
- Intelligent voltage stabilizer
- Cooler internal temps
- Long-lasting fan bearings
- Silent 0dB tech
Cons
- Highest price point
- Heavy unit weight
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Its GPU-First voltage stabilizer enhances delivery to graphics cards by up to 45%, ensuring smoother gameplay. The GaN components also reduce heat and improve efficiency significantly.
The price is steep, but you pay for top-tier components and silence. The dual ball fan bearings are designed to last twice as long as standard sleeve designs.
This is perfect for builders prioritizing performance and longevity. If you have a high-end system and budget, this unit delivers unmatched stability.
Enhanced GPU Power
GPU-First voltage sensing stabilizes power delivery specifically for your graphics card.
GaN Technology Benefits
GaN MOSFETs allow for a more organized layout and cooler operation.
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3. Thermaltake GF1 – Best Budget Fully Modular Power Supplies for Gaming Pcs
Thermaltake GF1 Fully Modular
80 Plus Gold
Zero RPM fan
140mm fluid bearing
Single 12V rail
The Thermaltake GF1 offers incredible value for budget-conscious gamers needing a reliable modular unit. It earns solid praise for its quiet operation and Gold efficiency certification.
Pros
- Affordable price
- Zero RPM silent mode
- Fully modular design
- High efficiency
- Industrial protections
Cons
- No ATX 3.1
- Shorter warranty
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Its Smart Zero Fan technology keeps the PSU silent during low loads, which is great for media PCs. The single 12V rail design simplifies power distribution for most systems.
While it lacks the newest ATX 3.1 features, it handles current GPUs well. The lower price point makes it accessible without sacrificing essential safety features.
Buy this for mid-range builds where cost is a priority. It provides excellent reliability and silence for the price.
Silent Operation
The Smart Zero Fan minimizes noise by stopping completely under light loads.
Reliability Features
Built-in industrial grade protections guard your system against power issues.
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4. MSI MAG A850GL PCIE5 – Best Compact Fully Modular Power Supplies for Gaming Pcs
MSI MAG A850GL PCIE5
850W capacity
Compact design
ATX 3.1 ready
10 Year warranty
The MSI MAG A850GL PCIE5 is a strong contender featuring native ATX 3.1 and PCIe 5.1 support. It includes a distinct dual-color 12V-2×6 cable for easy identification.
Pros
- Dual-Color cable
- 10 Year warranty
- Compact size
- ATX 3.1 ready
- Gold efficiency
Cons
- Higher price
- New brand entry
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MSI backs this unit with a 10-year warranty, signaling confidence in its durability. The compact form factor helps in tight cases where space is limited.
Its efficiency is competitive, though the price reflects the newer features. The dual-color cable prevents connection errors with modern GPUs.
Choose this if you need a compact, future-ready PSU. It suits builders who prioritize cable clarity and long-term support.
Dual-Color Cable
The native dual-color 12V-2×6 cable helps confirm connection status easily.
Compact Utility
Its compact design fits easily into smaller or crowded PC cases.
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5. CORSAIR RM850e – Best Efficient Fully Modular Power Supplies for Gaming Pcs
CORSAIR RM850e (2025)
850W capacity
105C rated caps
Intel ATX 3.1
Low noise fan
The CORSAIR RM850e is a modern unit certified for Intel ATX 3.1 standards. It uses 105°C-rated capacitors for steady electrical performance under heat.
Pros
- High temp capacitors
- Modern standby ready
- Quiet fan curve
- Reliable performance
- Fully modular
Cons
- Slightly higher price
- New model adoption
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Its specially calculated fan curve keeps noise down even at full load. Modern standby compatibility means faster wake times for your system.
This model is newer, which may affect initial pricing. However, the build quality matches Corsair's reputation for reliability.
Buy this for a balanced modern build. It offers the latest features without unnecessary premium costs.
High Temp Caps
105°C-rated capacitors ensure reliable performance in warm environments.
Modern Standby
Extremely fast wake-from-sleep times improve daily usability.
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6. CORSAIR RM1000x – Best High Wattage Fully Modular Power Supplies for Gaming Pcs
CORSAIR RM1000x ATX 3.1
1000W capacity
Cybenetics Gold
Native 12V-2×6
Embossed cables
The CORSAIR RM1000x offers massive headroom for high-end gaming builds. It features the same high-efficiency traits as the 850W version but with extra power capacity.
Pros
- High wattage headroom
- Gold efficiency
- Native PCIe 5.1
- Flexible cables
- 10 Year warranty
Cons
- Expensive option
- Heavy weight
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Its native 12V-2×6 connector ensures compatibility with the latest GPUs. The Cybenetics Gold rating means efficient power usage even under heavy load.
The 10-year warranty provides long-term peace of mind. It handles transient spikes better than older units.
Choose this if you need extra wattage for future upgrades. It is a safe bet for dual-GPU or extreme CPU setups.
Wattage Headroom
1000W capacity ensures stability for future upgrades and multiple GPUs.
Transient Handling
Resists transient power spikes effectively for stable system operation.
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7. be quiet! Pure Power 13 M – Best Silent Fully Modular Power Supplies for Gaming Pcs
be quiet! Pure Power 13 M
1000W capacity
Semi-passive fan
94.4% efficiency
ATX 3.1 ready
The be quiet! Pure Power 13 M lives up to its name with exceptional silence. It is certified for 94.4% efficiency which saves power and reduces heat.
Pros
- Near-silent operation
- Semi-passive cooling
- High efficiency rating
- ATX 3.1 compliant
- Strong transient handling
Cons
- Higher price
- Fan noise at load
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Its semi-passive cooling keeps the fan off during low loads. The 1000W capacity handles power excursions up to double its rated power easily.
While not as cheap as entry units, its quiet performance is worth the investment. It is perfect for home office setups.
Buy this for silent builds or media centers. It combines power with near-silent operation effectively.
Semi-Passive Cooling
The fan turns off completely under low load for true silence.
High Efficiency
Up to 94.4% efficiency means lower power bills and cooler temps.
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8. ASRock Steel Legend SL-850G – Best Value Fully Modular Power Supplies for Gaming Pcs
ASRock Steel Legend SL-850G
850W capacity
Cybenetics Platinum
135mm FDB fan
Japanese capacitors
The ASRock Steel Legend SL-850G delivers Platinum efficiency at a budget price. It uses Japanese capacitors for stability and includes a native 12V-2×6 connector.
Pros
- Low price
- Cybenetics Platinum
- Japanese components
- 5V BOOST function
- 10 Year warranty
Cons
- Limited availability
- Basic design
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Its iCool Intelligent Fan Control ensures silence during light loads. The 5V BOOST function compensates for voltage drops during spikes.
ASRock offers a 10-year warranty which is impressive for this price. The fan is quiet and durable.
Choose this for cost-sensitive builds needing reliability. It is a hidden gem in the power supply market.
Japanese Components
100% Japanese capacitors ensure exceptional reliability and long-term performance.
Voltage Stability
Built-in 5V BOOST maintains optimal performance during transient spikes.
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9. ASUS TUF Gaming 1000W Gold – Best Durable Fully Modular Power Supplies for Gaming Pcs
ASUS TUF Gaming 1000W Gold
1000W capacity
Military-grade components
Dual ball bearings
PCB coating
The ASUS TUF Gaming 1000W Gold is built to endure. Its components pass demanding tests for Military-grade Certification ensuring long life.
Pros
- Military-grade durability
- Dual ball fan bearings
- PCB coating protection
- 10 Year warranty
- ATX 3.1 ready
Cons
- Mid-range price
- Heavy construction
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The dual ball bearings last twice as long as sleeve designs. A protective PCB coating guards against moisture and dust.
It is a solid choice for those prioritizing durability. The ATX 3.1 compatibility keeps it future-proof.
Buy this for robust builds in varied environments. It combines durability with reliable efficiency.
Military-Grade Build
Capacitors and chokes pass demanding tests for Military-grade Certification.
PCB Coating
Protective coating defends against moisture, dust, and extreme temperatures.
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10. CORSAIR HX1500i – Best High Capacity Fully Modular Power Supplies for Gaming Pcs
CORSAIR HX1500i (2025)
1500W capacity
140mm FDB fan
Zero RPM mode
iCUE software
The CORSAIR HX1500i offers massive power for extreme workstations. It supports iCUE software for custom fan curves and power settings monitoring.
Pros
- Massive power output
- Full software control
- Zero RPM fan
- ATX 3.1 certified
- Fully modular
Cons
- Highest cost
- Overkill for most
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Its 140mm FDB fan is extremely quiet. Zero RPM mode ensures silence at low loads.
It is overkill for average gaming PCs. But for multi-GPU setups, it ensures stable power.
Choose this for professional workstations. It is built for maximum performance and control.
Software Control
iCUE software allows custom fan curves and power setting monitoring.
Massive Power
1500W capacity handles extreme multi-GPU workstation builds easily.
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Buying Guide – How to Choose the Best Fully Modular Power Supplies for Gaming Pcs
Choosing the right power supply involves weighing efficiency, wattage, and future compatibility. Use this guide to find the best match for your system needs.
Wattage Requirements
Ensure your power supply provides enough headroom for your CPU and GPU. A safe buffer helps manage spikes effectively.
Aim for a unit that meets your peak needs plus a 20% buffer.
Efficiency Ratings
Look for 80 Plus Gold or higher for better power conversion. Higher efficiency means less heat and lower bills.
Gold or Platinum certified units are generally best for gaming.
ATX 3.1 Support
ATX 3.1 standards support newer GPU power spikes safely. This ensures your unit handles modern cards without stress.
Choose ATX 3.1 certified units if building with current GPUs.
Modular Cabling
Fully modular units let you connect only needed cables. This improves airflow and makes case management much easier.
Always pick fully modular for cleaner PC builds.
Noise Performance
Fan noise can ruin an immersive experience. Look for units with zero RPM modes or fluid bearing fans.
Prioritize units with low dBA ratings for quiet operation.
Warranty Length
A long warranty signals confidence in build quality. Aim for 10 years for long-term peace of mind.
Always check warranty terms before finalizing your purchase.
Connector Compatibility
Ensure your unit has native 12V-2×6 connectors for new GPUs. This avoids the need for risky adapter cables.
Native connectors ensure safer GPU connections and better stability.
Physical Size
Verify your PSU fits your case dimensions. Standard ATX units fit most mid-towers but compact models exist.
Measure your case clearance before purchasing a new unit.
How to Use and Care for Your Fully Modular Power Supplies for Gaming Pcs
Plug only the cables you need to maintain clean airflow and reduce clutter inside your case.
Keep your PC intake filters clean to prevent dust buildup and ensure optimal cooling for the power supply.
Use surge protectors to guard against voltage spikes and extend the unit's operational lifespan.
Frequently Asked Questions
What is the advantage of a fully modular power supply?
A fully modular power supply allows you to connect only the cables you need. This reduces clutter and improves airflow inside your PC case.
Do I need ATX 3.1 for gaming?
ATX 3.1 is beneficial for modern gaming systems as it handles GPU power spikes safely. Older units may struggle with these demands.
Are modular cables interchangeable?
No, cables are not universal. Always use the cables provided with your specific power supply unit.
How do I know the right wattage?
Calculate your total system power needs and add a 20 percent buffer for safety. This ensures stable operation under load.
Why is efficiency important?
Higher efficiency means less wasted energy and heat. This leads to lower electricity bills and quieter operation.
What is the typical warranty?
Most quality units come with a ten-year warranty. This covers defects and ensures long-term reliability.
Do I need a separate cable for modern GPUs?
Newer GPUs require 12V-2×6 connectors. Ensure your power supply supports this natively or via included cables.
Can I use adapters?
Adapters exist but native connectors are safer. Avoid them if possible to reduce connection risks and heat.
Final Thoughts on Choosing the Best Fully Modular Power Supplies for Gaming Pcs
We reviewed ten top options ranging from budget-friendly units to high-end premium choices. Each unit offers distinct benefits for different build needs.
Prioritize efficiency and ATX 3.1 support for future-proofing. Choose a reputable brand to ensure safety and reliability.
Check current prices and stock levels before buying. Deals may vary as new models become available.