HP DPS-1125A-HP Power Supply Efficiency Workstation 1125W 100V Z820

( Brand: Hp ), ( Manufacturer Part Number: DPS-1125A-HP ), ( Type: Power Supply )

Review HP Power Supply 1125w 100v Efficiency Workstation

The **HP DPS-1125A** is a high-performance, modular power supply unit engineered specifically for the **HP Z820 Workstation**, delivering robust and reliable power delivery to support demanding professional workloads. With an impressive **1125-watt output**, this power supply is designed to handle the most intensive computing tasks, including high-end graphics rendering, 3D modeling, scientific simulations, and AI-driven applications, ensuring seamless operation even under heavy loads. Its **90% efficiency rating** not only minimizes energy waste but also reduces operational costs and heat generation, contributing to a more sustainable and cooler-running workstation environment. The modular design allows for flexible cable management, enabling users to connect only the necessary peripherals and reducing clutter within the system chassis. Built with **high-quality components**, the DPS-1125A features advanced protection mechanisms, including over-voltage, over-current, and short-circuit safeguards, ensuring long-term reliability and preventing potential damage to connected hardware. Ideal for professionals who demand peak performance from their workstations, this power supply is a critical component for maintaining stability, efficiency, and longevity in high-end computing setups. Whether supporting multi-core processors, high-end GPUs, or extensive storage arrays, the **HP DPS-1125A** provides the consistent power required to keep the Z820 Workstation operating at its full potential.

### **Pros and Cons of the HP DPS-1125A-HP (1125W, 100V, 90% Efficiency) Power Supply for the Z820 Workstation**

1. **High Power Output (1125W)** Suitable for high-end workstations like the Z820, which can draw significant power, especially when running multiple GPUs, high-core-count CPUs, or heavy workloads (e.g., rendering, AI, scientific computing).

2. **90% Efficiency Rating** While not the absolute best (some modern supplies reach 94-96%), 90% efficiency still means less wasted energy as heat, reducing operational costs and improving reliability over time.

3. **100V Input Compatibility** The Z820 is designed for North American voltage standards (100V-120V), so this power supply matches the system s electrical requirements without needing a voltage converter.

4. **Enterprise-Grade Build** HP s DPS series is known for durability, often used in servers and workstations where uptime and reliability are critical. This suggests better component selection and thermal management compared to consumer-grade units.

5. **Modular or Non-Modular Design (Assuming Standard for This Model)** While the exact modularity isn t specified, HP s enterprise supplies typically use semi-modular or non-modular designs, which can simplify cable management in a workstation setup.

6. **Redundancy and Hot-Swap Capability (If Applicable)** Some HP power supplies in this series support redundant configurations or hot-swappable units, which can be beneficial for mission-critical systems (though this specific model may not have those features).

7. **Long Lifespan and Low Failure Rates** Enterprise components often have longer lifespans and lower failure rates compared to budget consumer PSUs, which can be valuable for a workstation used intensively over years.

8. **Compatibility with High-End Components** The Z820 is a powerful machine, and this PSU is likely rated to handle its demands, including high-end CPUs (e.g., Xeon E7 or Xeon Phi) and multiple GPUs (if configured).

---

- **Full modularity** (if non-modular, cable clutter could be an issue).

- **Advanced protection circuits** (e.g., newer overvoltage/undervoltage protections).

- **Support for newer standards** (e.g., PCIe 4.0 or 5.0 GPUs, though the Z820 may not use them).

- **Compatibility with newer motherboards** (though the Z820 is a legacy system, some components may not be future-proof).

2. **Bulkiness and Size** High-wattage enterprise PSUs are often larger and heavier than modern consumer units. The Z820 s case may not have been designed with this in mind, potentially limiting airflow or requiring careful installation.

3. **Limited Availability and Support** As a legacy part, finding replacements or support may be difficult. HP may no longer stock it, and third-party compatibility could be uncertain.

4. **Noisy Operation (Potential)** Older high-wattage PSUs can be louder than modern units, which might be noticeable in a quiet work environment.

5. **No Active PFC (If Not Specified)** While 90% efficiency is decent, some modern supplies use active PFC (Power Factor Correction) to further reduce energy waste. If this PSU lacks it, it may draw more current from the wall.

6. **Potential for Higher Cost** Depending on the market, an older enterprise PSU like this may be more expensive than a modern consumer alternative with similar wattage, especially if bought used or refurbished.

7. **Compatibility with Modern Peripherals** While the Z820 itself is legacy, if you re adding newer peripherals (e.g., high-end SSDs, USB 3.2/Thunderbolt devices), the PSU s age might not be an issue, but some newer components could draw power in ways the PSU wasn t designed for.

---

### **Conclusion and Recommendation**

The **HP DPS-1125A** is a **solid choice for powering a Z820 workstation** if your primary concerns are reliability, power delivery, and compatibility with the system s electrical requirements. Its **1125W output, 90% efficiency, and enterprise-grade build** make it well-suited for heavy workloads, and its **100V compatibility** ensures seamless integration. However, its **age, potential bulkiness, and lack of modern features** may be drawbacks if you prioritize future-proofing or modularity.

- You need a **highly reliable, high-power PSU** for the Z820 s demanding workloads.

- You re **not planning to upgrade the system significantly** (e.g., adding newer GPUs or components that require cutting-edge power delivery).

- You **value enterprise-grade durability** over the latest efficiency or modularity features.

- You can **accommodate its size** in the Z820 s case without airflow issues.

- You want a **modern PSU** with better efficiency (e.g., 94-96%) and modularity (e.g., a high-end consumer unit like Corsair AX1600i or Seasonic PRIME).

- You re concerned about **long-term availability** and prefer a more widely supported part.

- You re running **extremely high-end GPUs or peripherals** that might stress the PSU s age.

For a **Z820 workstation**, the **HP DPS-1125A is a pragmatic and capable power supply**, especially if reliability and power output are top priorities. However, if you can justify the cost and space, a **modern high-efficiency PSU** might offer better long-term flexibility. Given the Z820 s legacy status, the HP unit is likely the **best available option** for most users.

Details:

Are for display purposes only, please see complete specifications. Item Location: Los Angeles. HP POWER SUPPLY 1125W 100V 90% EFFICIENCY FOR Z820 WORKSTATION DPS-1125A-HP. Free Ground Shipping for continental US.

Buyer pays shipping and handling. Item Information. Or its subsidiaries in the USA and other countries.: HP POWER SUPPLY 1125W INPUT 100-240V 12-10A 50-60HZ FOR Z820 WORKSTATION - OUTPUT 12.2V 18A AT 100V 12A / 1275W 115-127V 1450W 200-240V 10A 118V 400HZ.

MANUFACTURER: HP, PART NUMBER: DPS-1125A-HP, COMPATIBILITY: HP Z820 WORKSTATION, FORM FACTOR: QUICK RELEASE TOOL-LESS - MACHINE MUST BE TURNED OFF PRIOR TO REMOVING POWER SUPPLY, PERFORMANCE.

part #: dps1125a prices

• $39.99-$408.75

specifications serverpowe:

• brand: Hp
• mpn: Dps-1125a-hp
• type: Power Supply

seller serverpowe:

• rating: 99.8%
• # reviews: 11096
• city: Chatsworth, California

general serverpowe:

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

shipping serverpowe:

• type: Fixed
• carrier: FedEx
• cost: $0.00
• transit: 2-5 Days
• class: Standard
• service: FedEx Ground / FedEx Home Delivery

payments serverpowe:

• wallet: Google-pay
• credit card: Mastercard
• other

offer serverpowe:

• options: Ship-to-home
• availability: In Stock
• quantity: 2
• sold: 0
• started: May 18, 2026

returns serverpowe:

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

Hp DPS-1125A Is Similar To:

• 0.04894628851771121 Hp Server Power Supplies (31.9% 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 (28.6% 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...(September 28th, 2018)
• 0.12435276401422124 Hp Proliant Server Power Supply (27% 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 (34.8% 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...(August 18th, 2018)
• 0.23984194978954543 Lot Hp Server Power Supply For Proliant (35.8% 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...(October 16th, 2018)
• 0.3077571205020835 Lot Hp Power Supply (30.1% 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 (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...(May 15th, 2018)
• 0.35098879496432756 Lot Hp Server Power Supply For Proliant (35.8% 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...(March 14th, 2019)
• 0.5048865431814076 Lot Power Technology Hp Psu (21.5% 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 (27.6% 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)
• 0.6415656088394157 Hp Power Supply For Workstation (51.2% 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...(April 17th, 2018)