LXun PC Power Supplies: 4 Picks Ranked by Specs
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You are looking for the best LXun PC power supplies to replace or upgrade your system. This guide covers 4 models ranked strictly by their published specifications. LXun offers direct replacement units in various form factors, including TFX and standard desktop sizes. These units are designed for specific legacy desktops like Dell Optiplex and Lenovo systems. The top pick is the LXun 250W Dell Optiplex PSU because it provides the correct wattage and fit for Optiplex 390 and 790 replacements. Each selection is based solely on the data provided in the product listings.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | LXun 250W Dell Optiplex PSU Best overall | Dell Optiplex 390 and 790 replacements | Check price of LXun 250W Dell Optiplex PSU on Amazon |
| 2 | LXun 180W TFX Power Supply Best budget | Lenovo M410 and M510 desktops | Check price of LXun 180W TFX Power Supply on Amazon |
| 3 | LXun 220W PC8044 PSU Also great | HP Pavilion S5000 and S5306 replacements | Check price of LXun 220W PC8044 PSU on Amazon |
| 4 | LXun 310W Lenovo TFX Power Supply Best premium | Lenovo TFX systems needing 310W | Check price of LXun 310W Lenovo TFX Power Supply on Amazon |
Our 4 picks
LXun 250W Dell Optiplex PSU
Best for: Dell Optiplex 390 and 790 replacements
- Wattage
- 250W
- Warranty
- 365 Days
View on Amazon: LXun 250W Dell Optiplex PSU Affiliate link
This LXun 250W power supply replaces OEM units for Dell Optiplex and Vostro desktops. It matches the L250NS-00 model and supports a wide range of compatible part numbers. The unit includes a 365-day warranty for peace of mind. You should use this if your system requires a 250W replacement. It fits specific Dell chassis models listed in the data. Check your current PSU model before buying.
Pros
- 250W output capacity
- Compatible with Dell Optiplex 390, 790, 990, and 3010
- 365-day warranty coverage
- Matches OEM specifications
Cons
- Limited to 250W wattage
- Only compatible with specific Dell desktop models
- No 80 PLUS efficiency rating listed
Good fit if
- You need a replacement for a Dell Optiplex 390
- Your current PSU is a 250W L250NS-00 model
- You want a 365-day warranty
Skip if
- You have a Lenovo system requiring 180W or 310W
- You need more than 250W of power
- You use a Dell model not listed in the data
Verdict: LXun 250W Dell Optiplex PSU is a direct replacement for older Dell desktops. It fits users who need a 250W unit for Optiplex 390 or 790 systems.
LXun 180W TFX Power Supply
Best for: Lenovo M410 and M510 desktops
- Wattage
- 180W
- Warranty
- 1 Year
- Form Factor
- TFX
- Dimensions
- 5.91 × 3.23 × 2.72 inches
- Weight
- 1.98 pounds
View on Amazon: LXun 180W TFX Power Supply Affiliate link
This LXun unit provides 180W of power in a compact TFX form factor. It fits Lenovo M410, M510, and M610 systems. The 180W output is lower than the 220W and 250W options on this list. It measures 5.91 by 3.23 by 2.72 inches. You need this for tight cases or specific Lenovo desktops.
Pros
- 180W max output
- TFX form factor
- Compatible with Lenovo M410 and M510
Cons
- Lower 180W wattage than other picks
- Heavier at 1.98 pounds
- Shorter 1-year warranty
Good fit if
- You own a Lenovo M410 or M510
- You need a TFX power supply
- You require a 180W replacement unit
Skip if
- You need more than 180W
- You use a standard ATX case
- You want a higher wattage option
Verdict: LXun 180W TFX Power Supply suits Lenovo M410 and M510 owners needing a direct replacement. It offers the correct TFX size but delivers less power than the other options here.
LXun 220W PC8044 PSU
Best for: HP Pavilion S5000 and S5306 replacements
- Wattage
- 220W
- Warranty
- 1 Year
- Dimensions
- 6.89 × 3.25 × 2.6 inches
View on Amazon: LXun 220W PC8044 PSU Affiliate link
This LXun power supply delivers 220W of DC output. It is designed as a replacement for specific HP Pavilion models like the S5000 and S5306. The unit measures 6.89 inches in length, 3.25 inches in width, and 2.6 inches in height. It accepts 100-127V input at 6A. You should choose this if you need a direct swap for these legacy systems. It includes a one-year warranty.
Pros
- Provides 220W max DC output
- Compatible with HP Pavilion S5000 and S5306
- Includes 1-year warranty
- Compact TFX form factor dimensions
Cons
- Lower wattage than other picks on this list
- Limited to 100-127V input range
- Specific compatibility with older HP models
Good fit if
- You need a replacement for an HP Pavilion S5000 or S5306
- You are repairing a legacy desktop system
- You require a compact TFX-sized power supply
Skip if
- You need more than 220W of power
- You require 220V input compatibility
- You are building a modern high-performance PC
Verdict: LXun 220W PC8044 PSU is a straightforward replacement unit for specific HP Pavilion desktops. It fits users who need a direct spec match for legacy hardware rather than a high-performance upgrade.
LXun 310W Lenovo TFX Power Supply
Best for: Lenovo TFX systems needing 310W
- Wattage
- 310W
- PCIe Connector Type
- 6+2pin
- Warranty
- 1 Year
- Form Factor
- TFX
- Dimensions
- 5.9 × 3.2 × 2.6 inches
- Weight
- 1.79 pounds
View on Amazon: LXun 310W Lenovo TFX Power Supply Affiliate link
This LXun unit provides 310W of power in a compact TFX form factor. It features three independent +12V rails, each delivering 18A. The design includes a temperature-controlled fan that activates only when the CPU reaches specific heat levels. It supports 90W graphics cards and fits Lenovo ThinkCentre M series systems. You get a 1-year warranty and a 10-pin motherboard connector.
Pros
- 310W total output capacity
- Three 18A +12V rails for stable power delivery
- Temperature-controlled fan for quiet operation
- Supports 90W graphics cards
- Includes 10-pin motherboard connector
Cons
- Lower wattage than higher-end options
- 1-year warranty is shorter than industry standard
- Fan remains off at low loads
Good fit if
- You need a 310W TFX replacement for Lenovo ThinkCentre M series
- You are upgrading a system with a 90W graphics card
- You prefer a fan that stays silent at low temperatures
Skip if
- You require more than 310W of power
- You need a standard ATX form factor
- You want a warranty longer than 1 year
Verdict: LXun 310W TFX Power Supply is a solid replacement for Lenovo TFX systems needing modest power upgrades. It fits users who prioritize quiet operation and specific 10-pin connectivity over raw wattage.
Specifications side by side
| Spec | LXun 250W Dell Optiplex PSU | LXun 180W TFX Power Supply | LXun 220W PC8044 PSU | LXun 310W Lenovo TFX Power Supply |
|---|---|---|---|---|
| Wattage | 250W | 180W | 220W | 310W |
| PCIe Connector Type | not stated | not stated | not stated | 6+2pin |
| Warranty | 365 Days | 1 Year | 1 Year | 1 Year |
| Form Factor | not stated | TFX | not stated | TFX |
| Dimensions | not stated | 5.91 × 3.23 × 2.72 inches | 6.89 × 3.25 × 2.6 inches | 5.9 × 3.2 × 2.6 inches |
| Weight | not stated | 1.98 pounds | not stated | 1.79 pounds |
| Model | L250NS-00 power supply | HK280-72PP, 54Y8971, PA-2181-2 | 504965-001 504966-001 | PCJ007 SP50H29573 |
| Size | not stated | not stated | not stated | 5.9×3.2×2.6 inches |
The LXun Lineup at a Glance
The lineup splits primarily by form factor and target OEM desktop platform. If you maintain small-footprint Lenovo systems, look at the TFX form factor models: the LXun 180W TFX Power Supply and the LXun 310W Lenovo TFX Power Supply. These units deliver standard TFX dimensions with capacities of 180W or 310W.
For dedicated desktop replacements, LXun provides proprietary chassis fits. The LXun 250W Dell Optiplex PSU supplies 250W for compatible Dell towers. The LXun 220W PC8044 PSU offers 220W for HP Pavilion systems. Select between them based on your desktop manufacturer and required wattage.
Who Should Buy LXun PSUs
LXun targets users replacing legacy desktops with exact form factor matches. The range spans 180W to 310W, covering compact TFX sizes and standard modules. You will find options for Dell Optiplex, Lenovo M-series, and HP Pavilion systems. The lineup focuses on physical dimensions and connector compatibility rather than high wattage. None of these units offer modular cables or high-end efficiency ratings. This brand suits owners of older business PCs needing a direct spec match. It does not fit gamers or users requiring modern, high-power builds. Choose based on your case size and legacy connector needs.
How to choose the right one
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Match the form factor first
You must verify the physical dimensions before purchasing any unit. The LXun 180W TFX model measures 3.23 by 2.72 by 5.91 inches. If your case requires a different size, this unit will not fit. The LXun 220W PC8044 PSU has a width of 3.25 inches and a length of 6.89 inches. Always measure your existing power supply bay. Mismatched dimensions cause installation failures. Check the width and height specifications in the data sheet. Ensure the new unit aligns with your case mounting points. Physical compatibility is the primary constraint for these replacement parts.
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Check wattage requirements
Select a power supply that meets your system's power draw. The LXun 310W TFX unit provides 310 watts of power. This is suitable for Lenovo TFX systems needing a modest upgrade. The LXun 180W TFX model offers less power. It suits older Lenovo M410 and M510 desktops that do not require high energy. The LXun 250W Dell Optiplex PSU delivers 250 watts. It is ideal for Dell Optiplex 390 and 790 replacements. Do not exceed your system's needs with excessive wattage. Match the spec to your legacy hardware's demands.
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Verify connector compatibility
Ensure the connectors match your motherboard and peripherals. The LXun 310W TFX Power Supply features specific 10-pin connectivity. This detail is critical for Lenovo TFX systems. Using a unit with the wrong connector type prevents operation. You must compare the pin layout of your current unit. The data sheet lists the model numbers for reference. These numbers indicate the original equipment manufacturer design. Match the LXun model to your existing hardware interface. Incorrect connectors can damage components or prevent booting. Verify the interface type before finalizing your purchase decision.
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Identify the target system
Choose a unit designed for your specific desktop brand. The LXun 250W Dell Optiplex PSU is a direct replacement for older Dell desktops. It fits users needing a 250W unit for Optiplex 390 or 790 systems. The LXun 220W PC8044 PSU targets HP Pavilion S5000 and S5306 replacements. It offers a straightforward spec match for legacy HP hardware. The LXun 180W TFX Power Supply suits Lenovo M410 and M510 owners. Each unit targets a specific legacy system. Do not assume cross-compatibility between different brands. Verify the intended system for each model number.
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Review weight specifications
Consider the weight of the unit for your setup. The LXun 180W TFX Power Supply weighs 1.98 pounds. The LXun 310W TFX Power Supply weighs 1.79 pounds. Heavier units may indicate more robust internal components. However, the data does not confirm internal construction quality. You should only use the published weight for logistical planning. Ensure your case can support the unit's mass. The LXun 220W PC8044 PSU data does not list weight. Compare the available weight data for your chosen model. This helps in planning the physical installation process.
Frequently asked questions
Which LXun power supply is best for Dell Optiplex 390 or 790 systems?
The LXun 250W Dell Optiplex PSU is the top choice for these systems. It serves as a direct replacement for older Dell desktops. The unit is designed specifically for users who need a 250W power source for Optiplex 390 or 790 models. It ensures proper fit and power delivery for these legacy machines.
What is the smallest LXun power supply available?
The LXun 180W TFX Power Supply is the smallest option in this lineup. It is ideal for Lenovo M410 and M510 desktops. This unit delivers less power than other models but offers the correct TFX size. It is the best budget-friendly choice for compact systems requiring a direct replacement.
Does LXun offer a power supply for HP Pavilion S5000?
Yes, the LXun 220W PC8044 PSU is designed for HP Pavilion S5000 and S5306 systems. It acts as a straightforward replacement unit for these specific legacy desktops. The unit provides a direct spec match for older HP hardware, making it suitable for users who need compatibility over high-performance upgrades.
Which LXun PSU is best for Lenovo TFX systems needing more power?
The LXun 310W Lenovo TFX Power Supply is the best option for these systems. It provides a solid replacement for Lenovo TFX cases requiring modest power upgrades. This unit prioritizes quiet operation and specific 10-pin connectivity. It is ideal for users who need reliable performance without excessive noise.
What form factors do LXun power supplies come in?
LXun offers power supplies in TFX and standard desktop form factors. The TFX models, such as the 180W and 310W units, are designed for compact systems. The 250W Dell Optiplex PSU and 220W HP unit represent standard desktop sizes. You must match the physical dimensions of your case to ensure proper installation.
How much wattage do these LXun power supplies provide?
The wattage ranges from 180W to 310W across the lineup. The LXun 180W TFX unit offers the lowest power output. The 220W PC8044 and 250W Dell Optiplex units provide moderate power for legacy systems. The 310W Lenovo TFX supply delivers the highest wattage in this specific range, suitable for modest upgrades.
Are these LXun power supplies direct replacements for old desktops?
Yes, all listed units are designed as direct replacements for specific legacy systems. They target older Dell, Lenovo, and HP desktops. Each model matches the original hardware specifications for form factor and connectivity. This approach ensures compatibility without requiring additional adapters or case modifications for standard replacements.