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Power supply delivered stable output with no interruptions.
512327-B21
HP 750-W COMMON SLOT GOLD HOT PLUG POWER SUPPLY
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Name:
512327-B21
- Description:
- HP 750-W COMMON SLOT GOLD HOT PLUG POWER SUPPLY
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- Brand:
- Hpe
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512327-B21 Overview
512327-B21 is a high efficiency ATX power supply designed to deliver 750W of reliable power with a fully modular cable design. It features an 80 PLUS Gold certification, supports a wide input voltage range of 100–240V, and employs Active PFC for optimized electrical performance.
Built with a 120mm fluid dynamic bearing fan operating in zero RPM mode for near-silent performance, this unit includes robust protections such as OCP, OVP, and SCP. It offers a comprehensive set of connectors including one ATX 24-Pin, one EPS 4+4 Pin for the CPU, three PCIe 6+2 pins for GPUs, and six SATA connectors, making it an ideal choice for both gaming rigs and high-performance workstations.
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512327-B21 Specifications
- Product Type
- Power Supply
- Wattage
- 750W
- Use Case
- Workstation / Gaming
- Form Factor
- ATX
- Modularity
- Modular
- 80 PLUS Certification
- Gold
- Rail Configuration
- Single Rail
- Certifications
- 80 PLUS / CE / FCC / UL / ROHS
- Remote Monitoring
- N/A
- Input Voltage
- 100–240V
- Hot-Swap Capable
- No
- PFC (Power Factor Correction)
- Active PFC
- Fan Size
- 120mm
- Fan Bearing Type
- Fluid Dynamic
- Zero RPM Mode
- Yes
- Efficiency Rating
- 94%
- Protections
- OCP / OVP / SCP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 1
- PCIe (6+2) Connectors
- 3
- SATA Power Connectors
- 6
- Molex Connectors
- 4
- Floppy Connector
- No
- Cable Type
- Sleeved
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 150,000 hours
- Operating Temperature
- 55°C
- Product Name
- 512327-B21 High Efficiency ATX Modular Power Supply
- Height
- 5 inches
- Width
- 6 inches
- Depth
- 5.5 inches
- Weight
- 4 lbs
512327-B21 Use Case
24/7 High-Availability Data Center Power Redundancy
In enterprise data centers running HP ProLiant servers, integrating the HP 512327-B21 750W Common Slot Gold Hot-Plug Power Supply delivers seamless hot-swap capability and 90%+ efficiency. This setup ensures continuous power redundancy, minimizes planned and unplanned downtime, and reduces energy spend by up to 15%, enabling IT teams to meet 99.99% SLA uptime targets.
Optimized Virtualization Cluster Performance
For virtualization platforms consolidating dozens of VMs on HP blade and rack servers, the 750W Gold Hot-Plug Power Supply provides consistent high-density power delivery under fluctuating loads. Its common-slot design simplifies field replacement, accelerates maintenance windows by 50%, and maintains optimal PUE levels, resulting in improved VM performance and lower cooling costs.
Edge Computing and Telecom Infrastructure Resilience
In remote or branch-office edge deployments and telecom POPs, the HP 512327-B21 power supply supports mixed AC inputs and hot-swap operations. This capability enables network engineers to swap units without service interruptions, enhances UPS battery run-time, and fortifies network availability—delivering reliable voice, data, and IoT services with zero planned downtime.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 512327-B21 |  503296-B21 |  865434-B21 |  J2R02A |  720484-B21 | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 750W | 850W | 650W | 600W | 650W |
| Use Case | Workstation / Gaming | Gaming | Gaming | Gaming / Workstation | Gaming / Workstation |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Modular | Modular | Semi-Modular | Semi-Modular | Semi-Modular |
| 80 PLUS Certification | Gold | Gold | Gold | Gold | Gold |
| Rail Configuration | Single Rail | Multi Rail | Single Rail | Single Rail | Single Rail |
| Certifications | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / UL / CE / FCC |
| Remote Monitoring | N/A | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 100–240V |
| Hot-Swap Capable | No | No | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Fan Size | 120mm | 120mm | 120mm | 120mm | 120mm |
| Fan Bearing Type | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Dual Ball | Fluid Dynamic |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
| Efficiency Rating | 94% | 94% | 92% | 92% | 90% |
| Protections | OCP / OVP / SCP | OCP / OVP / UVP / OTP | OCP / OVP / UVP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / SCP / OTP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 1 | 2 | 1 | 1 | 1 |
| PCIe (6+2) Connectors | 3 | 4 | 2 | 2 | 2 |
| SATA Power Connectors | 6 | 6 | 6 | 6 | 4 |
| Molex Connectors | 4 | 2 | 4 | 4 | 2 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Sleeved | Sleeved | Sleeved | Sleeved | Sleeved |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 150,000 hours | 150,000 hours | 150,000 hours |
| Operating Temperature | 55°C | 50°C | 50°C | 50°C | 50°C |
| Product Name | 512327-B21 High Efficiency ATX Modular Power Supply | 503296-B21 850W Fully Modular ATX Power Supply | 865434-B21 Ultra Efficiency Semi-Modular ATX Power Supply | J2R02A 600W Semi-Modular ATX Power Supply | 720484-B21 High-Performance ATX Power Supply |
| Height | 5 inches | 5.5 inches | 5.1 inches | 5.5 inches | 5 inches |
| Width | 6 inches | 6 inches | 6.3 inches | 6.3 inches | 6 inches |
| Depth | 5.5 inches | 7 inches | 5.9 inches | 3.1 inches | 5 inches |
| Weight | 4 lbs | 4.5 lbs | 4.5 lbs | 4.5 lbs | 4 lbs |
Reviews & Ratings
O
Ola Berg
4
Hot plug replacement worked flawlessly.
S
Simone Ferraro
5
Good efficiency and reliable operation.
K
Krzysztof Urban
3
OEM PSU fit perfectly.
J
Jean-Luc Petit
4
Solid and dependable power supply.
Questions & Answers
What are the key features of the HP 750-W Common Slot Gold Hot Plug Power Supply (SKU: 512327-B21)?
The HP 750-W Common Slot Gold Hot Plug Power Supply (512327-B21) delivers 750 W of continuous power, 80 PLUS Gold efficiency (up to 92%), hot-plug capability, and a compact common-slot form factor for robust performance in HP ProLiant servers.
Which HP server models are compatible with the 750-W Common Slot Gold Hot Plug Power Supply?
This power supply is compatible with HP ProLiant DL and ML Gen8, Gen9, and select Gen10 servers that support the common-slot interface, including DL360, DL380, ML350, and BL460 series.
What is the efficiency rating of the HP 750-W Common Slot Gold Power Supply?
The unit holds an 80 PLUS Gold certification, providing up to 92% energy efficiency under typical load conditions to reduce power waste and operating costs.
Can the HP 750-W Common Slot Gold Power Supply be hot-swapped?
Yes. The hot-plug design allows removal or replacement without powering down the server, ensuring uninterrupted operation and high availability.