Looking Beyond the Thermaltake Smart BX1 650W 80+? 6 Alternatives Worth a Look
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If you are shopping for thermaltake 650w tt smart bx1 alternatives, you have several capable power supplies to evaluate. The Thermaltake Smart BX1 650W provides a dependable baseline for single-GPU systems by supplying 650W of continuous power with 80 Plus Bronze efficiency. It also features a 12cm hydraulic bearing fan and two 6+2-pin PCI-E connectors. Even so, your build might require different hardware specifications. You may need semi-modular cabling to reduce case clutter, a compact SFX form factor for a smaller chassis, or a different wattage level to match your components.
This guide highlights 6 power supplies that share key specifications with the BX1, including 80 Plus Bronze efficiency and dedicated PCIe support. Some options step up to 750W or offer modular cable management, while others scale down to 450W or 500W for low-draw configurations. Comparing these technical details helps you select the right power supply for your desktop requirements without buying unneeded capacity.
Our top pick: Thermaltake Smart BX1 650W 80+ Bronze PSU.
Comparing Thermaltake Smart BX1 Alternatives
Corsair CX-M Modular Power Supply
The Corsair CX-M provides modular cable management, allowing you to disconnect unnecessary cables for a cleaner interior. In contrast, the Thermaltake Smart BX1 uses fixed flat wiring. Both power supplies share an 80 Plus Bronze efficiency rating for energy conversion. However, this Corsair model is a renewed unit, unlike the factory-fresh Thermaltake supply. It also brings CX750M-tier wattage for setups requiring more power than the 650W provided by the BX1. You should choose this model if you want modular cables and higher wattage capacity, provided you are comfortable installing renewed hardware in your desktop system.
EVGA SuperNOVA 750W Bronze Power Supply
The EVGA SuperNOVA increases continuous output to 750W, delivering 100W more capacity than the 650W Thermaltake Smart BX1. It also features hybrid modular cabling, which lets you detach unused cables to reduce case clutter compared to the BX1's fixed cable design. Both units share an 80 Plus Bronze efficiency level. The EVGA is physically heavier at 7 pounds versus the BX1's 4.37 pounds, with dimensions of 5.9 by 3.4 by 7.1 inches. You should pick the SuperNOVA if your graphics card and system components demand extra wattage headroom and cleaner modular cable routing.
EVGA 650 BQ 650W Semi-Modular PSU
The EVGA 650 BQ matches the Thermaltake Smart BX1 with 650W of continuous power and an 80 Plus Bronze efficiency rating. Where it improves upon the BX1 is its semi-modular cable layout, which allows you to detach surplus cables instead of managing fully fixed bundles. It also incorporates a larger 140 mm cooling fan compared to the BX1's 12cm hydraulic bearing fan, and it includes a 5-year warranty. Measuring 5.91 by 3.35 by 5.51 inches and weighing 5 pounds, this unit is ideal if you want identical wattage to the BX1 but prefer semi-modular cable convenience.
EVGA 500 BQ 500W Semi-Modular Power Supply
The EVGA 500 BQ lowers output capacity to 500W compared to the 650W supplied by the Thermaltake Smart BX1. Both power supplies carry an 80 Plus Bronze efficiency rating. The EVGA gives you semi-modular cabling, making wire routing easier than working with the BX1's non-modular flat cables. At 1.1 pounds, the EVGA unit is notably lighter than the 4.37-pound BX1, while sharing a compact 5.51-inch length. You should choose the EVGA 500 BQ if your PC components have modest power demands that do not require 650W and you value the flexibility of detachable modular cables.
FSP SFX Pro 450W Bronze Power Supply
The FSP SFX Pro provides 450W of power with 80 Plus Bronze efficiency, stepping down from the 650W capacity of the Thermaltake Smart BX1. Unlike the standard ATX footprint of the BX1, the FSP unit uses a compact small-form-factor design measuring 4 by 2.5 by 5 inches and weighing 2.69 pounds. It includes DC-to-DC regulation and an ATX mounting bracket for installation flexibility across different chassis types. You should pick this FSP supply instead of the BX1 if you are assembling a compact Mini-ITX or low-power desktop build that requires a space-saving power supply.
SilverStone 450W SFX Bronze Power Supply
The SilverStone 450W power supply trades the 650W output of the Thermaltake Smart BX1 for a 450W continuous power limit designed for compact builds. Both units maintain an 80 Plus Bronze efficiency rating. The SilverStone unit is built around the SFX form factor, supporting small cases while providing an ATX adapter bracket for broader case compatibility. It operates with a 36A +12V budget, which is lower than what the 650W BX1 accommodates. You should select this SilverStone model if you are building an SFX system or downsizing your chassis where the BX1 cannot physically fit.
Quick picks
Our 7 picks
Thermaltake Smart BX1 650W 80+ Bronze PSU
Best for: standard mid-range single-GPU desktop builds
- Wattage
- 650W
- Efficiency Rating
- 80+ Bronze
- PCIe Connector Type
- PCI-E 6+2pin
- Fan Size
- 12cm
- Dimensions
- 8.03 × 9.92 × 3.78 inches
- Weight
- 4.37 pounds
The Thermaltake Smart BX1 delivers 650W of power with an 80 Plus Bronze efficiency certification. Inside, a 12cm hydraulic bearing fan manages internal heat, while two 6+2-pin PCIe connectors support a dedicated graphics card. All cables use a flat design to help routing. This unit suits you if you run a mid-range desktop and want broad 100V to 240V input support.
Pros
- 80 Plus Bronze efficiency certification
- 12cm hydraulic bearing cooling fan
- Two 6+2-pin PCIe power connectors
- Flat cable construction
- Wide 100V to 240V input range
Cons
- Non-modular design with fixed cables
- Limited to two PCIe connectors
- Operating temperature limited to 40°C maximum
Good fit if
- You need 650W output with 80 Plus Bronze efficiency.
- You run a graphics card requiring no more than two 6+2-pin PCIe connectors.
- You operate on an input supply between 100V and 240V.
Skip if
- You need modular cabling to detach unused wires.
- You run hardware needing more than two PCIe power connectors.
- You expect ambient operating temperatures above 40°C.
Verdict: Thermaltake Smart BX1 650W Bronze Power Supply is a solid baseline unit delivering 650W with 80 Plus Bronze efficiency and dual PCIe connectors. It provides dependable specifications for standard single-GPU configurations that do not require modular cabling.
Corsair CX-M Modular Power Supply
Best for: budget modular builds needing Bronze efficiency
- Efficiency Rating
- 80 Plus Bronze
- Modularity
- Modular
The Corsair CX-M Series CX750M is a modular power supply offering an 80 Plus Bronze efficiency rating. If you want a PC setup with reduced interior cable clutter, its modular interface lets you connect only the cables your hardware requires. Presented as a renewed unit with a black finish, it suits you if you want dependable Bronze-level efficiency and detached cabling for an uncluttered interior.
Pros
- Modular cabling allows you to attach only required cables
- 80 Plus Bronze efficiency rating
- Black finish matches standard chassis interiors
Cons
- Supplied as a renewed unit rather than factory-new
- Efficiency ceiling is limited to 80 Plus Bronze
Good fit if
- You want modular cable routing to keep your build neat.
- You need a standard 80 Plus Bronze efficiency level.
- You are comfortable purchasing renewed hardware.
Skip if
- You require brand-new, factory-sealed equipment.
- You want higher efficiency ratings such as 80 Plus Gold.
Verdict: Corsair CX750M Modular Power Supply (Renewed) provides 80 Plus Bronze efficiency and modular cable management for uncluttered PC builds. It is a practical match if you need clean cabling and accept a renewed hardware unit.
EVGA SuperNOVA 750W Bronze Power Supply
Best for: builds needing extra wattage and modular cables
- Wattage
- 750W
- Efficiency Rating
- 80PLUS Bronze
- Modularity
- Hybrid Modular
- Dimensions
- 7.1 × 5.9 × 3.4 inches
- Weight
- 7 pounds
The EVGA SuperNOVA 750W Bronze PSU gives you an extra 100 watts of headroom over standard 650-watt units. It features an 80 PLUS Bronze efficiency rating, hybrid modular cabling to reduce internal case clutter, and a multi-rail design with full hardware protections. Japanese capacitors provide reliable power delivery for your system components. This power supply suits you if you need increased capacity for demanding graphics hardware without routing unnecessary fixed cables.
Pros
- 750W continuous output capacity
- Hybrid modular cable layout
- Japanese brand internal capacitors
- Complete protection suite including OVP, UVP, OCP, OPP, SCP, and OTP
Cons
- Bronze efficiency rating rather than Gold
- Partially hardwired rather than fully modular
- 7.1-inch length requires extra chassis depth
Good fit if
- You need 750W of power for higher-draw PC components.
- You want hybrid modular cabling to simplify internal airflow.
- You prefer Japanese capacitors and multi-rail circuit protections.
Skip if
- You need a fully modular unit where all cables disconnect.
- You have a compact case unable to fit a 7.1-inch long power supply.
Verdict: EVGA SuperNOVA 750W Bronze PSU delivers robust 750-watt output with hybrid modular cabling and heavy-duty protections. It gives your setup more electrical headroom than standard 650-watt units while keeping case clutter manageable.
EVGA 650 BQ 650W Semi-Modular PSU
Best for: mid-range builds needing semi-modular 650W power
- Wattage
- 650W
- Efficiency Rating
- 80+ Bronze
- Modularity
- Semi Modular
- Fan Size
- 140 millimeter
- Warranty
- 5 Year
- Dimensions
- 5.51 × 5.91 × 3.35 inches
The EVGA 650 BQ is a 650W power supply designed with semi-modular cabling and an 80 Plus Bronze efficiency rating delivering up to 85 percent efficiency under typical loads. It features a 140 mm Teflon nano-steel bearing cooling fan alongside built-in OVP, UVP, OCP, OPP, and SCP protections. Backed by a 5-year warranty, it suits you if you want a dependable 650W unit with cleaner cable management.
Pros
- 80 Plus Bronze certified with at least 85 percent typical efficiency
- Semi-modular design keeps case clutter down
- 140 mm Teflon nano-steel bearing fan for cooling
- Includes power on self tester and 5-year warranty
Cons
- Semi-modular design leaves core cables hardwired
- Efficiency capped at 80 Plus Bronze rather than Gold
Good fit if
- You need 650W output backed by a 5-year warranty
- You prefer detachable peripheral cables to reduce case clutter
Skip if
- You require fully modular cable connections
- You want higher efficiency ratings than 80 Plus Bronze
Verdict: EVGA 650 BQ Semi-Modular 650W PSU offers balanced 650W Bronze output with semi-modular cabling flexibility. It delivers steady power protected by five safety standards and a large 140 mm fan.
EVGA 500 BQ 500W Semi-Modular Power Supply
Best for: budget mid-range builds needing 500W capacity
- Wattage
- 500W
- Efficiency Rating
- 80+ Bronze
- Modularity
- Semi Modular
- Fan Size
- 120 millimeter
- Warranty
- 3 Year
- Dimensions
- 5.51 × 5.91 × 3.35 inches
The EVGA 500 BQ is a 500-watt power supply featuring an 80 Plus Bronze efficiency rating and semi-modular cabling. It includes a 120-millimeter fluid dynamic bearing fan and built-in protections such as OVP, UVP, OCP, OPP, and SCP. If you need lower wattage than a 650-watt unit for a moderate desktop build, this power supply provides essential hardware protections and detachable peripheral cables to help keep your case interior organized.
Pros
- Semi-modular cable design for cleaner routing
- 80 Plus Bronze certified efficiency
- 120mm fluid dynamic bearing fan
- Built-in OVP, UVP, OCP, OPP, and SCP protections
Cons
- 3-year warranty is shorter than higher-tier models
- 500W output limit offers less headroom than 650W alternatives
Good fit if
- You need a 500-watt supply for a low- to mid-range PC build.
- You prefer semi-modular cables to reduce interior clutter.
- You want a unit with a 120mm fluid dynamic bearing fan.
Skip if
- You need 650 watts or more for higher-power graphics cards.
- You prefer a fully modular cable layout.
- You want a warranty longer than three years.
Verdict: EVGA 500 BQ 500W Semi-Modular PSU delivers 500 watts of 80 Plus Bronze power with semi-modular cabling and comprehensive circuit protections. It serves as a dependable lower-wattage choice when your setup does not require a full 650-watt unit.
FSP SFX Pro 450W Bronze Power Supply
Best for: compact small-form-factor and low-power desktop builds
- Wattage
- 450W
- Efficiency Rating
- 80 Plus Bronze
- Modularity
- Non-Modular
- Form Factor
- Mini ITX
- Dimensions
- 5 × 4 × 2.5 inches
- Weight
- 2.69 pounds
The FSP SFX Pro 450W Bronze PSU is a compact power supply built for space-constrained cases. It supplies 450W of output with an 80 PLUS Bronze efficiency level. The unit features DC-to-DC circuitry for voltage regulation and comes with flat ribbon cables. If you need a small-form-factor unit that includes an SFX-to-ATX adapter bracket for flexible case mounting, this fits your build.
Pros
- Includes SFX-to-ATX adapter bracket
- DC-to-DC internal converter design
- 80 PLUS Bronze efficiency certification
- Flat black ribbon cables
Cons
- 450W maximum capacity limits high-draw GPUs
- Uses sleeve bearing fan
Good fit if
- You build inside a compact Mini-ITX or small-form-factor case.
- You need an SFX power supply with an included ATX mounting bracket.
- You run a lower-draw system requiring 450W or less.
Skip if
- You require 650W or higher power output for demanding components.
- You want higher efficiency than 80 PLUS Bronze.
Verdict: FSP SFX Pro 450W Bronze PSU provides small-footprint power with DC-to-DC regulation and flexible ATX mounting.
SilverStone 450W SFX Bronze Power Supply
Best for: compact SFX and small ATX builds
- Wattage
- 450W
- Efficiency Rating
- 80 Plus Bronze
- Form Factor
- SFX
- Dimensions
- 9 × 7 × 4 inches
The SilverStone 450W SFX 80 Plus Bronze PSU provides compact power for small-form-factor systems. You get 450W continuous output rated for 24/7 operation at 40°C alongside 80 Plus Bronze efficiency. It includes an ATX mounting bracket and features a single +12V rail delivering up to 36A. This power supply fits your needs if you build a mini-ITX setup and do not require higher 650W capacity.
Pros
- Supports SFX cases and includes an ATX adapter bracket
- Delivers 450W continuous power rated for 24/7 operation at 40°C
- Single +12V rail delivers up to 36A
- 80 Plus Bronze efficiency rating
Cons
- 450W total output limits hardware headroom compared to 650W units
- Efficiency level reaches 80 Plus Bronze rather than higher tiers
Good fit if
- You need a compact SFX unit with an included ATX mounting bracket
- You run a low-draw build requiring up to 450W continuous power
- You need a dedicated single +12V rail capable of 36A
Skip if
- You need 650W or higher capacity for high-power components
- You require an efficiency rating above 80 Plus Bronze
Verdict: SilverStone 450W SFX 80 Plus Bronze PSU delivers dependable 450W continuous power in a compact chassis with ATX bracket support. It is a solid choice for small builds that stay within a 36A +12V budget.
Specifications side by side
| Spec | Thermaltake Smart BX1 650W 80+ Bronze PSU | Corsair CX-M Modular Power Supply | EVGA SuperNOVA 750W Bronze Power Supply | EVGA 650 BQ 650W Semi-Modular PSU | EVGA 500 BQ 500W Semi-Modular Power Supply | FSP SFX Pro 450W Bronze Power Supply | SilverStone 450W SFX Bronze Power Supply |
|---|---|---|---|---|---|---|---|
| Wattage | 650W | not specified | 750W | 650W | 500W | 450W | 450W |
| Efficiency Rating | 80+ Bronze | 80 Plus Bronze | 80PLUS Bronze | 80+ Bronze | 80+ Bronze | 80 Plus Bronze | 80 Plus Bronze |
| Modularity | not specified | Modular | Hybrid Modular | Semi Modular | Semi Modular | Non-Modular | not specified |
| PCIe Connector Type | PCI-E 6+2pin | not specified | not specified | not specified | not specified | not specified | not specified |
| Fan Size | 12cm | not specified | not specified | 140 millimeter | 120 millimeter | not specified | not specified |
| Warranty | not specified | not specified | not specified | 5 Year | 3 Year | not specified | not specified |
| Form Factor | not specified | not specified | not specified | not specified | not specified | Mini ITX | SFX |
| Size | not specified | not specified | not specified | 650W | 500W | 450W | 450W |
| Dimensions | 8.03 × 9.92 × 3.78 inches | not specified | 7.1 × 5.9 × 3.4 inches | 5.51 × 5.91 × 3.35 inches | 5.51 × 5.91 × 3.35 inches | 5 × 4 × 2.5 inches | 9 × 7 × 4 inches |
| Weight | 4.37 pounds | not specified | 7 pounds | 5 pounds | 1.1 pounds | 2.69 pounds | not specified |
| Model | PS-SPD-0650NNFABB-1* | not specified | 120-PB-0750-KR | 110-BQ-0650-V1 | 110-BQ-0500-K1 | PPA450AA01 | SST-ST45SF-V3-USA |
| Color | not specified | not specified | Black | not specified | not specified | 80 Plus Bronze | not specified |
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Frequently asked questions
Which alternative provides higher wattage than the Thermaltake Smart BX1 650W?
The EVGA SuperNOVA 750W Bronze Power Supply gives you 750 watts of output. This unit increases total power capacity by 100 watts over the 650-watt Thermaltake Smart BX1 baseline. It features hybrid modular cabling and heavy-duty circuit protections, which help you reduce case clutter while safely powering hardware configurations that need extra electrical headroom.
What is the best semi-modular 650W alternative to the Thermaltake Smart BX1?
The EVGA 650 BQ serves as the direct semi-modular 650W alternative. While matching the 650-watt output and 80 Plus Bronze efficiency of the Thermaltake Smart BX1, it incorporates semi-modular cabling so you only attach necessary peripheral leads. It also features a large 140 mm cooling fan and five safety standards to safeguard your components.
Can you fit these power supply alternatives into small form factor PC cases?
Yes, both the FSP SFX Pro 450W and the SilverStone 450W SFX fit compact enclosures. These options use the smaller SFX physical footprint instead of full-size ATX measurements. Both models provide 450 watts with 80 Plus Bronze efficiency. They include ATX bracket support, giving you the flexibility to install them in compact chassis or standard cases.
What is a lower-wattage option if you do not need 650W?
The EVGA 500 BQ provides a 500-watt alternative for lower-demand desktop builds. If your system components do not require the full 650-watt output of the Thermaltake Smart BX1, this model delivers reliable 500W capacity with 80 Plus Bronze efficiency. It also gives you semi-modular cabling and comprehensive circuit protections to keep your setup clean.
What +12V rail output does the SilverStone 450W SFX power supply support?
The SilverStone 450W SFX power supply supports up to a 36A output on its +12V rail. This dedicated rail delivers continuous power suitable for low-power graphics hardware and processors within a 450-watt maximum budget. It maintains 80 Plus Bronze energy efficiency in a compact chassis that includes ATX bracket mounting capability for smaller enclosures.
Which alternative includes DC-to-DC voltage regulation?
The FSP SFX Pro 450W includes DC-to-DC regulation in its design. DC-to-DC circuitry helps maintain steady voltage regulation across rails in modern computer systems. Along with 80 Plus Bronze efficiency, this 450-watt unit offers a small physical footprint and flexible ATX mounting brackets, making it suitable for space-constrained desktop builds.