Thermaltake Smart 500W
4.6Editor score
80 Plus White certified
120mm quiet cooling fan
5 year warranty included
In this guide
Finding a reliable 350W power supply is essential for budget builds and compact systems. These units provide stable energy for low-power components while keeping heat and noise levels manageable for daily use.
We analyzed ten top-rated models based on efficiency ratings, connector variety, and build quality. Our comparisons focus on real-world performance metrics and safety certifications to ensure you get dependable power for your PC.
Each pick highlights key strengths and trade-offs to match different needs. Prices and availability change frequently so check current listings before purchasing to confirm compatibility and stock status for your specific build.
Top 3 Picks for Best 350W PSU
Antec BP350 Basiq
5.0Editor score
Reliable brand reputation
Full protection suite
Budget friendly design
Silverstone Technology FX350
80 Plus Gold efficiency
Flex ATX form factor
24 7 operation rated
Top 10 Best 350W PSU in 2026 Compared
This side by side table compares all ten power supplies across key specifications. Use this overview to quickly identify which model fits your case size and power needs.
ProductsSpecificationsEditor scorePrice
Best Budget
Thermaltake Smart 500W
500W continuous output
80 Plus White efficiency
Active PFC included
5 year warranty
4.6Editor score
Editor's Choice
Silverstone Technology FX350
350W continuous power
80 Plus Gold certified
Flex ATX 1U size
Single 12V rail
Editor's Choice
Apevia ITX-PFC400W
400W maximum power
Fully modular design
ITX form factor
90-264V PFC
3.9Editor score
APEVIA VENUS450W
450W power delivery
120mm auto fan
Full protection system
Split connector options
4.0Editor score
ARESGAME AGV Series 500W
500W continuous output
80 Plus Bronze rated
5 year warranty
Non modular design
4.4Editor score
PSU for ATX 350W HG2
350W rated capacity
Standard ATX size
ROHS compliant
Basic power unit
PC Power Supply 350W Low Energy
350W power unit
Low energy consumption
Adjustable voltage switch
Thermal fan control
5.0Editor score
Antec BP350 Basiq
350W output power
ATX12V spec
Reliable brand
Affordable price tier
5.0Editor score
Antec Basiq BP350 350WATT
350W power supply
80mm quiet fan
ATX12V V2.01
Compact design
4.5Editor score
600W Power Supply Gold
600W continuous output
80 Plus Gold eff
125mm FDB fan
Non modular design
5.0Editor score
1. Thermaltake Smart 500W – Best Value PSU
Thermaltake Smart 500W
500W continuous power
120mm cooling fan
Active PFC tech
80 Plus White
The Thermaltake Smart 500W delivers solid performance for budget builds with its 500W continuous output. It carries an 80 Plus White certification ensuring basic efficiency standards are met for everyday computing tasks.
Pros
- Strong 12V rail
- Quiet cooling fan
- Solid protection suite
- Good connector options
- Affordable pricing
Cons
- White certification only
- Non modular cables
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This unit features a powerful 12V rail that supports modern component requirements well. The 120mm fan operates quietly under load while maintaining stable temperatures. Active PFC ensures efficient power draw and compliance with energy standards.
Protection features include over power over voltage and short circuit safeguards for system safety. While the cables are non modular the included connectors cover most standard setups. The five year warranty adds confidence to this budget choice.
Buyers seeking reliable power without spending much will find this unit suitable. It works well with entry level gaming PCs or office systems where high efficiency is not the primary concern. The build quality supports consistent daily use.
Efficient Power Delivery
Active PFC technology helps reduce wasted energy and supports stable voltage output under varying load conditions.
Quiet Operation
The ultra quiet cooling fan minimizes noise while providing adequate airflow for thermal management inside standard cases.
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2. Silverstone Technology FX350 – Premium Compact PSU
Silverstone Technology FX350
350W output rating
80 Plus Gold
Flex ATX form
12V single rail
The Silverstone FX350 offers premium efficiency with its 80 Plus Gold certification suitable for compact builds. It delivers 350W continuous power at 40 degrees supporting reliable performance even in enclosed spaces.
Pros
- Gold efficiency rating
- Compact 1U design
- Continuous 24/7 use
- High voltage stability
- Industry leading quality
Cons
- Higher price point
- Fixed cables included
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Class leading single 12V rail design ensures stable power delivery to modern components. Active PFC and PCIe support make it versatile for different system types. The Flex ATX form factor fits small form factor cases easily.
Continuous operation rating means it can run 24/7 without issues which is great for servers or NAS units. Fixed cables may limit flexibility but they ensure clean internal cable management in tight chassis designs. Gold efficiency reduces energy costs over time.
This PSU is ideal for users needing high efficiency in a small footprint. Budget is less important than performance and reliability. The compact size and gold certification make it stand out among standard ATX options.
High Efficiency
80 Plus Gold certification ensures minimal energy loss and lower electricity costs during extended usage periods.
Compact Form Factor
Flex ATX 1U size fits into space constrained cases while maintaining robust power output capabilities.
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3. Apevia ITX-PFC400W – Best Modular ITX PSU
Apevia ITX-PFC400W
400W max power
Fully modular
90-264V PFC
Small dimensions
The Apevia ITX-PFC400W offers full modularity which simplifies cable management in small builds. It delivers 400W peak power with active PFC supporting stable performance across varying electrical inputs.
Pros
- Modular cable system
- Full range PFC
- Multiple connector types
- Small physical size
- Protection features
Cons
- Mixed user ratings
- Limited availability
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Connectors include main power CPU and PCIe options plus SATA and Molex for legacy devices. The fan uses double ball bearings for longevity. Multiple protections guard against electrical faults to keep components safe during operation.
Dimensions are compact at 160mm length fitting ITX cases well. Split connectors allow flexibility for motherboards needing 4pin or 20pin inputs. However ratings suggest users should verify compatibility before purchasing.
This unit suits DIY enthusiasts who value cable flexibility. The modular design reduces clutter significantly. While ratings vary the feature set is strong for small form factor projects needing adaptable power options.
Modular Design
Fully modular cables let you connect only what you need improving airflow and reducing cable clutter inside cases.
Split Connector Support
Splitting CPU and motherboard connectors provides flexibility for older boards requiring 4pin or 20pin power.
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4. APEVIA VENUS450W – Solid Mid Tier PSU
APEVIA VENUS450W
450W output
120mm auto fan
Full protections
Split cable options
The APEVIA VENUS450W provides 450W of power with comprehensive safety features. The 120mm fan adjusts speed based on thermal needs reducing noise during light loads.
Pros
- Auto thermally fan
- Complete protection suite
- Multiple connector types
- Voltage tolerance
- Flexible CPU power
Cons
- Basic efficiency
- Non modular
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It includes full protection against short circuit overcurrent overvoltage and over temperature events. The 8pin CPU connector can split for compatibility with 4pin motherboards. Voltage tolerance ensures stable output for sensitive components.
Flexible CPU power connections and split motherboard connectors adapt to various hardware needs. Non modular cables are standard but manageable in standard cases. The 115/230V switch adds flexibility for international use.
Buyers wanting balanced power for mid range builds will find this adequate. Protection systems enhance reliability. The auto fan and split connectors provide practical benefits for system builders.
Auto Thermal Fan
Thermal sensor controls fan speed automatically balancing cooling efficiency with noise levels during operation.
Split Connectors
Split CPU and motherboard connectors ensure compatibility with older boards needing 4pin or 20pin power.
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5. ARESGAME AGV Series 500W – Bronze Efficiency Pick
ARESGAME AGV Series 500W
500W continuous
80 Plus Bronze
120mm fan
5 year warranty
The ARESGAME AGV series delivers 500W with 80 Plus Bronze certification for improved efficiency. The all black cables create a clean look inside the case. Protection features include overvoltage and short circuit safeguards.
Pros
- Bronze efficiency
- Strong 12V rail
- Quiet fan
- Full protections
- All black cables
Cons
- Non modular
- Basic build
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It includes a 120mm ultra quiet fan for thermal management under load. The warranty period of five years indicates manufacturer confidence. High efficiency reduces power waste compared to non rated units.
Non modular design means all cables are present but may require management. Black cables improve aesthetics. The 12V rail provides steady power for CPU and GPU components.
This PSU suits budget gamers needing better efficiency. The bronze rating and quiet fan are practical benefits. Aesthetics and reliability make it a solid choice for basic builds.
Bronze Efficiency
80 Plus Bronze certification ensures higher energy conversion rates reducing heat and electricity costs.
Quiet Cooling
The 120mm ultra quiet fan delivers cooling performance without introducing noticeable noise during typical usage.
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6. PSU for ATX 350W HG2 – Standard Replacement PSU
PSU for ATX 350W HG2
350W capacity
ATX form factor
ROHS compliant
Basic specs
The PSU for ATX 350W HG2 serves as a straightforward replacement option. It features standard ATX dimensions fitting most cases. ROHS compliance ensures environmental standards are met during manufacturing.
Pros
- Standard ATX size
- ROHS compliant
- Simple design
- Replacement ready
- Affordable
Cons
- Limited specs
- Basic quality
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This unit focuses on basic functionality without extra certifications. Connectors and protections are minimal but adequate for low power systems. It is often used for office PCs or older system upgrades.
No advanced features are listed which keeps costs low. The design is utilitarian and focuses on core power delivery. It lacks efficiency ratings but meets fundamental requirements.
Suitable for users needing a direct replacement for existing low power units. The standard size ensures compatibility. Basic features make it a practical choice for simple computing needs.
Standard Fit
Standard ATX form factor guarantees compatibility with most desktop cases and mounting points.
ROHS Compliance
ROHS compliance ensures restricted hazardous substances are used during manufacturing for safer disposal.
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7. PC Power Supply 350W – Energy Efficient Unit
PC Power Supply 350W Low Energy
350W power
Low energy
115/230V switch
Auto fan
This PC Power Supply targets low energy consumption for basic desktop systems. It includes a manual 115/230V switch for regional voltage flexibility. The fan speed adjusts automatically via thermal sensors.
Pros
- Low consumption
- Voltage switch
- Auto fan control
- Easy connectors
- High user rating
Cons
- Basic design
- Limited specs
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Connectors are clearly marked for quick installation. It uses ATX12V 2.31 specifications for compatibility. Double magnetic ring design reduces interference. These features suit quiet home office setups.
Users rate it highly for reliability and ease of use. The adjustable voltage handles unstable power sources well. Low noise operation fits environments needing quiet machines.
Ideal for users prioritizing simplicity and low noise. The fan control and voltage switch add practical value. It delivers consistent performance for standard office computing tasks.
Manual Voltage Switch
115/230V manual switching allows flexibility for different electrical standards and unstable voltage areas.
Auto Fan Control
Thermal sensors control fan speed to reduce noise while maintaining safe operating temperatures.
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8. Antec BP350 Basiq – Reliable Entry Level PSU
Antec BP350 Basiq
350W output
ATX12V standard
Reliable brand
Budget friendly
The Antec BP350 Basiq offers reliable power from a trusted brand. It delivers 350W with solid quality standards ensuring safe operation. The workhorse reputation means it handles steady loads well.
Pros
- Trusted brand
- Stable power
- Quality build
- Affordable
- Safe operation
Cons
- Older specs
- No efficiency cert
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Built with years of experience this unit focuses on dependable performance. It meets ATX12V requirements for basic systems. The design prioritizes function and safety over advanced features.
While it lacks modern efficiency ratings it delivers stable power for entry level builds. Antec's reputation adds confidence. The 24/4 pin connector ensures wide compatibility.
Buyers wanting a simple dependable PSU will find this suitable. It fits budget builds where reliability matters most. The brand history supports its claim as a solid power source.
Trusted Brand
Antec builds this unit on years of experience ensuring reliable power delivery for entry level systems.
Safe Operation
Safety features and quality materials protect components during daily use and steady loads.
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9. Antec Basiq BP350 – Compact Quiet PSU
Antec Basiq BP350 350WATT
350W power
80mm quiet fan
ATX12V V2.01
Compact design
This Antec Basiq unit features a quiet 80mm fan for low noise operation. It delivers 350W with ATX12V V2.01 compliance. The compact design fits standard cases easily.
Pros
- Quiet fan
- Trusted brand
- Compact size
- Standard connectors
- Reliable
Cons
- Small fan
- Basic features
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The fan design reduces noise making it suitable for home offices. Antec ensures steady power delivery for entry level builds. The connectors are standard and support common components.
While the fan is small it maintains quiet operation. Efficiency is not certified but power delivery is stable. The brand reputation adds value to this basic unit.
Buyers seeking quiet power for basic systems will find this effective. The compact size and reliable output suit entry level users. It remains a solid choice for simple upgrades.
Quiet Fan Design
The 80mm quiet fan minimizes noise while providing sufficient cooling for low power systems.
Standard Compliance
ATX12V V2.01 compliance ensures compatibility with most standard motherboards and components.
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10. 600W Power Supply Gold – High Wattage Option
600W Power Supply Gold
600W output
80 Plus Gold
125mm FDB fan
Full protections
The 600W Power Supply Gold delivers higher wattage for gaming or future proofing. It features 80 Plus Gold efficiency reducing waste and heat. The 125mm FDB fan ensures quiet cooling.
Pros
- High power
- Gold efficiency
- FDB fan
- Multiple protections
- Gaming compatible
Cons
- Non modular
- Overkill for 350W
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Full protections cover overvoltage overcurrent and short circuit events. It supports standard ATX cases easily. The 100-240V active PFC adapts to global voltages. Cable length is adequate for most setups.
While it exceeds 350W needs it provides headroom for upgrades. The fan and efficiency features are strong. It fits gaming builds with higher power requirements.
Buyers wanting extra capacity for GPU upgrades will find this beneficial. Gold efficiency and FDB fan offer performance. The unit handles demanding workloads well.
Gold Efficiency
80 Plus Gold efficiency reduces energy waste and heat for better system stability and lifespan.
FDB Fan
The 125mm fluid dynamic bearing fan provides quiet operation with long life and effective cooling.
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Buying Guide – How to Choose the Best 350W PSU
Selecting the right power supply requires understanding efficiency, wattage, and connector needs. This guide explains the key factors to consider before buying.
Efficiency Ratings
Efficiency ratings like 80 Plus indicate how much power is converted to usable energy. Higher ratings like Gold reduce waste and heat which can lower electricity bills and fan noise. Look for certified units to ensure reliability and energy savings.
Prioritize efficiency ratings that match your usage patterns and energy goals.
Wattage Capacity
350W is suitable for low power CPUs and basic GPUs. Ensure the PSU meets your system draw with some headroom. Higher wattage provides room for upgrades but may cost more.
Calculate your total component draw and add margin to pick the right capacity.
Form Factor
Standard ATX fits most cases while Flex ATX suits small form factors. Check case dimensions to ensure physical compatibility. Some units include unique mounting or clearance requirements.
Confirm the PSU size matches your case specifications before purchasing.
Connector Types
Modern GPUs need PCIe 6+2pin connectors and CPUs need 4+4pin or 8pin. Modular units simplify cable routing but fixed units save cost. Ensure enough connectors exist for your drives and peripherals.
Count required connectors to avoid compatibility issues during installation.
Protection Features
Safety protections like OVP OCP and SCP protect hardware from electrical faults. Look for comprehensive protection suites to avoid component damage. These features extend system lifespan and ensure safe operation.
Always choose a PSU with full electrical protection features for safety.
Cooling and Noise
Fan size and bearing type affect noise and longevity. Larger fans often spin slower for quieter operation. Thermal control features adjust speed based on load to reduce noise.
Consider fan size and bearing type for desired noise levels.
Warranty and Brand
Established brands offer better reliability and support. Warranty periods range from one to five years. Longer warranties indicate confidence in build quality and durability.
Prioritize brands with strong reputations and solid warranty coverage.
Active PFC
Active Power Factor Correction improves efficiency and voltage stability. It reduces power draw spikes and supports global voltage standards. Passive units lack these benefits and cost more energy.
Ensure active PFC is present for better efficiency and stability.
How to Use and Care for Your 350W PSU
Connect the PSU securely to the motherboard and components ensuring all cables click into place. Verify voltages on the switch match your region before powering on. Secure loose cables inside the case to improve airflow.
Keep the intake vents clean by dusting regularly to prevent overheating. Avoid blocking airflow behind the PSU or near the intake fan. Use compressed air to remove dust from the fan blades.
Monitor system temperatures using software to ensure the PSU is operating within safe limits. If the fan becomes loud or stops spinning check for obstructions. Replace the unit if it fails to deliver stable power or shows signs of damage.
Frequently Asked Questions
Is 350W enough for gaming?
350W suffices for entry level cards like GTX 1050 or RX 6400 with low TDP CPUs. Higher end GPUs require more power so check component requirements. If planning upgrades consider a higher wattage unit for flexibility.
What is 80 Plus certification?
80 Plus certification guarantees minimum efficiency levels under specific loads. White Bronze Gold and Platinum tiers indicate increasing efficiency. Higher tiers save energy and produce less heat which can reduce fan noise.
Do I need a modular PSU?
Modular units simplify cable management in small cases but cost more. Fixed units are cheaper and work well for standard builds. Choose based on your case size and preference for cable routing.
Can I use a PSU from a different brand?
Most PSUs follow ATX standards so brand choice matters less for compatibility. Ensure connectors match your components and wattage is sufficient. Stick to reputable brands for safety and reliability.
How do I know if my PSU is failing?
Signs include system crashes random shutdowns or unusual fan noise. Voltage drops or burning smells indicate hardware faults. Use a multimeter or testing tool to check stability if issues arise.
What is Active PFC?
Active PFC improves power draw efficiency and stabilizes voltage output. It reduces energy waste and supports multiple input voltages. PSUs with active PFC run cooler and consume less power at typical loads.
How long do PSUs last?
Quality PSUs often last five to ten years under normal use. Higher quality capacitors and cooling extend life. Heat and dust reduce lifespan so keep the area clean and well ventilated.
Final Thoughts on Choosing the Best 350W PSU
The best 350W PSU depends on your build needs and budget. The Thermaltake Smart 500W offers strong value while Antec Basiq models provide reliable entry level power. For compact high efficiency builds the Silverstone FX350 stands out.
Prioritize efficiency ratings and connector compatibility before comparing prices. Protection features and warranty terms help ensure long term stability. Choose a unit that matches your component power draw and case size.
Prices and availability change regularly so check current listings before buying. Verify specs and connector counts to avoid surprises. Investing in a quality PSU protects your system and ensures consistent performance.