POWMAX LP-7700E Atx Switching Power Supply Psu 400W

( Brand: Powmax ), ( Manufacturer Part Number: LP-7700E ), ( Form Factor: Atx ), ( Type: Power Module ), ( Maximum Power: 400 W ), ( Unit Type: Unit ), ( Color: Silver )

Review POWMAX Atx Switching Power Supply Psu Retro Pc Vintage

The PoweXtreme LP-7700E is a high-performance 400-watt ATX switching power supply unit (PSU) from POWMAX, a leading manufacturer of power supplies. This PSU is designed for use in desktop computers and delivers reliable and efficient power to various components.

The LP-7700E features a modern, compact design with a size of 150mm x 86mm x 140mm (W x H x D) and a weight of approximately 2.2 kilograms. Its high-quality 120mm double ball fan ensures quiet operation and efficient cooling even under heavy load. The fan speed is automatically adjusted based on temperature, allowing for nearly silent operation under normal conditions.

This PSU is built with top-notch components, including Japanese capacitors and high-quality MOSFETs. It provides stable and clean power output with a minimum efficiency of 85% and up to 12V rail output of 33.3A. It also features overvoltage, undervoltage, overcurrent, and short-circuit protection to safeguard your components from potential damage.

The LP-7700E comes with multiple connectors, including 2x 4 4-pin EPS12V connectors, 6x SATA connectors, 10x 6 2-pin PCIe connectors, and 4x 4-pin peripheral connectors. This allows for flexibility in connecting various components in your system, such as CPUs, GPUs, and hard drives.

Additionally, this power supply is 80 PLUS Bronze certified, meaning it meets or exceeds the minimum efficiency requirements set by this industry standard. This not only ensures reliable performance but also helps reduce energy waste and save on electricity costs over time.

In summary, the POWMAX LP-7700E is a robust, efficient, and reliable 400-watt ATX switching power supply that is perfect for powering demanding desktop computers. Its modern design, quiet operation, and numerous connectors make it a great choice for both casual and professional users.

The PoweXcel PMX LP-7700E is a 400W ATX switching power supply unit (PSU). Here are some potential pros and cons to help you make an informed decision about purchasing this PSU:

1. High Wattage: With a capacity of 400W, the PMX LP-7700E can effectively power most mid-range to high-end computer systems.

2. Efficient: The PSU boasts an 80 PLUS Bronze certification, which guarantees a minimum efficiency of 82% under typical load conditions.

3. Fan Control: The built-in fan control ensures that the fan only runs when necessary, leading to a quieter computing experience.

4. Protective Features: The PSU includes overcurrent, overvoltage, and short-circuit protection, ensuring your system is safe from potential power surges or short-circuits.

5. Modular Design: The modular design enables users to only connect the cables they require, reducing clutter and improving airflow within the case.

1. Limited Overclocking Capabilities: While the PSU can support moderate overclocking, it may not be suitable for those looking to push their components to their absolute limits.

2. Limited Connectivity: The PMX LP-7700E may not include all of the latest and most advanced connectors, potentially requiring additional adapters for certain components.

3. Noise: Some users have reported that the fan can be loud under heavy load conditions, which may be a concern for those working in quiet environments.

In conclusion, the PoweXcel PMX LP-7700E 400W ATX switching power supply offers a solid balance of performance, efficiency, and protective features for most mid-range to high-end computer systems. Its modular design and fan control add to its appeal, making it a worthwhile consideration for those seeking a reliable and quiet PSU. However, its limited overclocking capabilities and connectivity options may be a drawback for some users.

If the PMX LP-7700E's features and capabilities align with your needs, it can be a great choice for a reliable and efficient PSU. However, if you require advanced connectivity options or plan on heavy overclocking, you may want to consider other models with more extensive features.

Details:

This unit is a true piece of early 2000computing history, featuring classic silver-grey finish and physical I/O power switch. It is equipped with a variety of legacy connectors suitable for period-correct hardware, making it valuable find enthusiasts working on Windows 98 or XP era sleeper builds restorations. Featured here is a vintage Powmax LP-7700E ATX power supply unit with maximum output of 400W. Condition and equipment as in the photo.

Device not tested. The PSU includes a manual 115V/230V voltage selector and standard integrated cooling fan.

part #: lp7700e prices

• $25.00-$95.00

specifications powsuppy:

• brand: Powmax
• mpn: Lp-7700e
• form factor: Atx
• type: Power Module
• maximum power: 400 W
• unit type: Unit
• color: Silver

general powsuppy:

• Computers/Tablet's Networking > Computer Components Parts > Power Supplies
• condition: Used

seller powsuppy:

• city: Spokane, Washington
• rating: 99.5%
• # reviews: 764

shipping powsuppy:

• type: Calculated
• service: USPS Ground Advantage
• transit: 3-9 Days
• carrier: USPS
• cost: $10.63
• class: Standard

payments powsuppy:

• wallet: Apple-pay
• other
• credit card: Diners-club

offer powsuppy:

• best offers: True
• options: Ship-to-home
• started: April 28, 2026
• quantity: 1
• availability: In Stock
• sold: 0

returns powsuppy:

• policy: No Returns

Powmax LP-7700E Is Similar To:

• Powmax Lp-6100x Lp-6100 Atx Switching Power Supply Lp-6100c (69.3% similar) Powmax LP-6100 atx switching power supply LP-6100C. Condition is used. Shipped with USPS ground advantage...(August 19th, 2024)
• Powmax Lp6100a 230w Atx Power Supply (59.6% similar) Powmax LP6100A 230W atx power supply...(September 1st, 2024)
• Powmax Lp-8800d 400w 20 Pin Atx Power Supply (60.7% similar) Working condition item used...(December 22nd, 2024)
• Powmax Lp-6100d Tornado Desktop Power Supply 400 Watt Lp-6100x Series New (43.4% similar) With and without the flash as every camera shows colors a little differently. Powmax tornado atx / satay desktop power supply 400 watt LP-6100D LP-6100X series brand new in box. Satay connector inside the box. Built-in inrush-current, over-temperature, over-current and over- voltage protection...(May 28th, 2025)