HP M25919-002 Redundant Power Supply Z8 G5 1450W M47645-001 R20-1K1P1A

( Brand: Hp ), ( Manufacturer Part Number: M25919-002 ), ( Part Type: Supply ), ( Compatible Brand: For Hp ), ( Unit Type: Unit ), ( Maximum Output Power: 1450w ), ( Country Of Origin: China )

Review HP Genuine Z8 G5 1450w Redundant Power Supply

The **HP M25919-002 Z8 G5 1450W Redundant Power Supply (M47645-001, R20-1K1P1A)** is a high-performance, enterprise-grade power supply unit meticulously engineered to deliver reliable and efficient power distribution for the HP ProLiant DL380 G5 and other compatible server platforms within the Z8 generation. Designed with redundancy in mind, this power supply operates in a **hot-plug, hot-swap** configuration, ensuring minimal downtime during maintenance or component failure. Its **1450-watt capacity** provides ample headroom for high-demand workloads, including memory-intensive applications, virtualization environments, and high-performance computing tasks, while maintaining optimal efficiency even under peak loads. Built to meet stringent industry standards, this unit features **double conversion online UPS (Uninterruptible Power Supply) topology**, ensuring a clean, stable power output with near-instantaneous response to grid fluctuations, surges, or outages. The **R20-1K1P1A** designation indicates its compatibility with **120/230V AC input ranges**, making it versatile for deployment in global data centers or branch offices with varying electrical infrastructures. Constructed from high-grade materials, including reinforced copper windings and advanced thermal management components, this power supply is engineered to operate reliably within a broad ambient temperature range, typically between **10 C to 35 C (50 F to 95 F)**, though it can tolerate short-term excursions beyond this range without compromising performance. The inclusion of **redundant fan modules** enhances airflow efficiency and reduces noise levels, contributing to a quieter operational environment within the server chassis. Additionally, this power supply is equipped with **HP s Intelligent Provisioning (IP) and iLO (Integrated Lights-Out) support**, allowing administrators to remotely monitor power health, track efficiency metrics, and receive alerts for potential issues via the server s embedded management controller. Whether deployed in a mission-critical data center or a high-availability cluster, the **HP M25919-002** exemplifies robustness, scalability, and reliability, ensuring uninterrupted operation for demanding enterprise applications while adhering to HP s legacy of enterprise-grade infrastructure solutions.

### **Pros and Cons of buying a HP M25919-002 (Z8 G5) 1450W Redundant Power Supply (M47645-001, R20-1K1P1A)**

1. **High Power Capacity (1450W)** Suitable for high-end servers, workstations, or systems with multiple GPUs, high-end CPUs, or heavy workloads. This power supply exceeds the needs of most standard servers, ensuring ample headroom for future upgrades.

2. **Redundancy (R20-1K1P1A)** The "R20" designation indicates a redundant configuration, meaning it can operate as a hot-swappable backup in a dual-power-supply setup. This improves system reliability by preventing downtime if one unit fails.

3. **Hot-Swappable Design** Allows replacement without shutting down the server, minimizing operational disruptions in critical environments.

4. **Enterprise-Grade Reliability** HP s server-grade power supplies are built for 24/7 operation, with robust cooling, filtering, and protection mechanisms (overvoltage, overcurrent, short-circuit, etc.).

5. **Compatibility with HP ProLiant G5 Servers** This unit is specifically designed for the HP ProLiant BL460c, DL380 G5, and other compatible G5-era servers. It ensures proper fit, voltage regulation, and efficiency in these systems.

6. **High Efficiency (Potentially)** While exact efficiency ratings aren t always publicly listed for older enterprise PSUs, HP s server-grade units typically operate at **80% efficiency** at full load, reducing energy waste.

7. **Long Lifespan** Enterprise power supplies are built for durability, often lasting **10 years** with proper maintenance, especially in stable environments.

8. **Support for Multiple Voltage Outputs** The "1K1P1A" suggests it provides **12V, 5V, and 3.3V rails**, which are standard for server hardware, ensuring compatibility with most components.

9. **Low Noise Operation** HP s server PSUs are generally quieter than consumer-grade units, which is beneficial in data centers or office environments.

10. **Warranty and Support** As an OEM part, it may come with **limited lifetime warranty** (depending on HP s current policy) and access to HP s technical support for server hardware.

---

1. **Age of the Product (G5 Era, 2007-2009)**

- **Obsolescence**: HP has long since discontinued support, and finding replacement parts (especially for the server chassis) may be difficult.

- **Lack of Modern Features**: No advanced power management (e.g., intelligent fan control, digital monitoring), which is standard in newer units.

- **Compatibility Issues**: May not work with modern CPUs, RAM, or storage (e.g., NVMe, DDR4), though this depends on the specific server model.

2. **High Cost for a Used/Refurbished Unit**

- New, this PSU would be **extremely expensive** (likely **$500 $1,000 ** depending on availability).

- Used/refurbished units may still cost **$200 $400**, which is **far more** than modern consumer-grade PSUs (e.g., Corsair, Seasonic) offering similar or better performance.

3. **Bulkiness and Physical Constraints**

- The **1450W size** is **massive** compared to modern PSUs (e.g., a 1000W server PSU today is often half the size).

- May not fit in modern cases or smaller server chassis without modifications.

4. **No Modularity**

- Non-modular design means **all cables are permanently attached**, which can be messy and limit airflow in tight spaces.

5. **Potential for Outdated Standards**

- Older PSUs may lack **modern protection features** (e.g., advanced surge protection, better EMI filtering) that newer units include.

- **No ATX 3.0/EPS 12V v2.92 compliance** (modern standards for high-power servers), which could be a concern if upgrading components.

6. **Energy Consumption**

- A **1450W PSU running at partial load** will still draw significant power, increasing operational costs compared to a more efficient modern unit.

7. **Limited Availability**

- Finding a **new** unit is nearly impossible; most are **used/refurbished**, which may come with unknown wear or repair history.

- HP s **ProLiant G5 line is end-of-life**, so official support and documentation are scarce.

8. **No Software Monitoring**

- Unlike newer enterprise PSUs (e.g., HP ProLiant G8/G9 with iLO), this unit lacks **remote monitoring or diagnostics**, making troubleshooting harder.

9. **Potential for Higher Failure Rates Over Time**

- While HP s PSUs are reliable, **15 years of operation** increases the risk of capacitor failure, fan wear, or other degradation.

10. **Better Alternatives Exist**

- For modern servers, **HP ProLiant G8/G9/G10 PSUs** (e.g., **M47645-001 s newer versions**) offer **better efficiency, modularity, and support for newer hardware**.

- **Third-party enterprise PSUs** (e.g., **Corsair AX1600i, Seasonic PRIME TX-1000**) provide **similar redundancy at a fraction of the cost** for modern builds.

---

- You **already own a ProLiant G5 server** that requires this exact PSU for redundancy.

- You **cannot find a suitable replacement** (e.g., due to extreme rarity or compatibility constraints).

- You are **running a legacy system** where downtime is unacceptable, and the PSU is the only failing component.

- **Extreme age and obsolescence** of the G5 platform.

- **High cost** compared to modern alternatives.

- **Lack of future-proofing** (no support for newer hardware).

- **Better-performing, more efficient, and cheaper options** available today.

---

- You have **no other option** for redundancy.

- You are **willing to accept the limitations** (no upgrades, high cost, age).

- **Consider a dual-PSU setup** (if possible) to maximize reliability.

- **Replace the entire G5 server** with a **modern ProLiant G8/G9/G10** (e.g., **DL380 Gen10, BL460c Gen9**) if budget allows.

- **Use a newer redundant PSU** (e.g., **HP M47645-001 for G8/G9** or **Corsair RMx series** for custom builds).

- **HP ProLiant G8/G9 PSUs** (e.g., **M47645-001 for G8, M47645-002 for G9**).

- **Third-party enterprise PSUs** (e.g., **Corsair AX1600i, Seasonic PRIME TX-1000**) for better efficiency and modularity.

- **For a budget build**, a **dual 1000W PSU setup** (e.g., **Corsair RM1000x Seasonic TX-1000**) provides redundancy without the G5 s drawbacks.

- **Document the PSU s condition** (check for bulging capacitors, fan noise, voltage stability).

- **Have a backup plan** (e.g., a spare PSU or manual swapping procedure).

- **Monitor for failures** older PSUs may degrade faster than expected.

---

**Do not buy this PSU unless absolutely necessary for a G5 server.** The **cost, age, and lack of modern features** make it a poor choice for any new or upgraded system. If you re running a **critical legacy G5 server**, proceed with caution and budget for potential future replacements. For everything else, **modern alternatives are far superior**.

Details:

Power Supply Only. Present normal use wear. Details: Pulled from working environment. Tested Working.

No Power Cord.

part #: m25919002 prices

• $69.00-$199.00

specifications serverpowe:

• brand: Hp
• mpn: M25919-002
• part type: Supply
• compatible brand: For Hp
• unit type: Unit
• maximum output power: 1450w
• country of origin: China

shipping serverpowe:

• type: Fixed
• class: Standard
• transit: 3-8 Days
• service: Standard
• cost: $0.00

payments serverpowe:

• other
• credit card: Discover
• wallet: Paypal

general serverpowe:

• condition: Used
• Enterprise Networking, Servers > Server Components > Server Power Supplies

returns serverpowe:

• paid by: Buyer
• method: Money back
• time: 30 Days
• policy: Returns Accepted

offer serverpowe:

• best offers: True
• started: March 24, 2026
• sold: 0
• quantity: 2
• availability: In Stock
• options: Ship-to-home

seller serverpowe:

• rating: 99.6%
• # reviews: 116210
• city: Chino, California

Hp M25919-002 Is Similar To:

• 0.04894628851771121 Hp Server Power Supplies (27.9% similar) I'll get back to you as soon I can. Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software...(September 24th, 2018)
• 0.12305281555341363 Hp Proliant Power Supply (32.8% similar) Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software. I'll get back to you as soon I can...(September 28th, 2018)
• 0.12435276401422124 Hp Proliant Server Power Supply (31% similar) Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software. I'll get back to you as soon I can...(August 4th, 2018)
• 0.16936675760682274 Lot Hp Switching Power Supply For Qty (29.6% similar) Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software. I'll get back to you as soon I can...(August 18th, 2018)
• 0.23984194978954543 Lot Hp Server Power Supply For Proliant (30.7% similar) I'll get back to you as soon I can. Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software...(October 16th, 2018)
• 0.3077571205020835 Lot Hp Power Supply (36.2% similar) Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software. I'll get back to you as soon I can...(July 18th, 2018)
• 0.33773340645162886 Hp Proliant Power Supply (32.8% similar) I'll get back to you as soon I can. Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software...(May 15th, 2018)
• 0.35098879496432756 Lot Hp Server Power Supply For Proliant (30.7% similar) Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software. I'll get back to you as soon I can...(March 14th, 2019)
• 0.4632489706682059 Lot Of Hp Watt Redundant Server Psus Qty (27.7% similar) I'll get back to you as soon I can. Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software...(March 27th, 2018)
• 0.5048865431814076 Lot Power Technology Hp Psu (25.8% similar) Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software. I'll get back to you as soon I can...(April 23rd, 2018)
• 0.5682396590271368 Lot Hp Switching Power Supply (28.6% similar) I'll get back to you as soon I can. Condition: used, working if a power adapter is required for this item, it not included cord shows signs of normal use w some scuffs scratches blemishes sticker residue no other accessories hardware software...(October 13th, 2018)