GIGABYTE P550SS 550W Power Supply
£39.50 inc VAT
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About This Item
- 12 cm fluid dynamic bearing fan with active cooling
- 550 W ATX 3.0 power supply with 80 PLUS Bronze certification
- Single +12V rail design for optimal power output and overclocking
- Non-modular cabling with flat cables for improved airflow
- Multiple protection features including OCP, OVP, and SCP
- 100 000 h MTBF for long-term reliability
- 155-240 V AC input with active power factor correction
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GIGABYTE P550SS | 550 W ATX 3.0 Bronze Power Supply
The GIGABYTE P550SS is a 550 W ATX 3.0 power supply unit designed for reliable PC builds. It delivers stable power output with 80 PLUS Bronze efficiency, making it a solid choice for mid-range gaming and productivity systems.
Key Specifications
| Metric | Spec. |
|---|---|
| Total Power | 550 W |
| Efficiency | 80 PLUS Bronze |
| ATX Standard | 3.0 |
| Cooling | 120 mm FDB fan |
| Cabling Type | Non-Modular |
Efficient 80 PLUS Bronze Power Delivery
The P550SS achieves 80 PLUS Bronze certification, ensuring at least 85 % efficiency under typical loads. This reduces wasted energy, lowers heat output, and keeps operational noise to a minimum. For UK users, this means lower electricity consumption and a cooler-running system.
ATX 3.0 Ready for Modern Components
Built to the Intel ATX 3.0 standard, the P550SS supports up to 200 % power excursion for demanding components like high-end graphics cards. It also meets Intel PSDG timing requirements, making it fully compatible with the latest hardware and future upgrades.
Quiet 120 mm Fluid Dynamic Bearing Fan
Equipped with a 120 mm FDB fan, the P550SS uses oil film shock absorption to reduce noise and extend lifespan beyond conventional designs. The fan speed automatically adjusts based on system load and temperature, keeping your build quiet during light use and effective under stress.
Reliable Single +12V Rail Design
A single +12V rail simplifies cable management and ensures stable power delivery across all components. This design is particularly beneficial for overclocking, where consistent voltage is critical for system stability and performance.
Built-In Protection Suite
The P550SS includes comprehensive protection features: over current (OCP), over voltage (OVP), over power (OPP), over temperature (OTP), under voltage (UVP), and short circuit (SCP). These safeguards help protect your components from electrical faults and ensure long-term reliability.
What Is in the Box
- GIGABYTE P550SS power supply unit
- Power cable
- Mounting screws
- User manual
Things to Check First
- Confirm your PC case has space for a 150 x 140 x 86 mm PSU
- Verify your system’s total power draw is within 550 W capacity
- Check that your motherboard uses a 20+4 pin ATX connector
- Ensure you have enough SATA and PCIe connectors for your drives and GPU
Buyer FAQs
Is the P550SS compatible with ATX 3.0 motherboards?
How many PCIe connectors does it have?
Can I use this for overclocking?
What is the MTBF rating?
Does it have a UK plug?
Why we rate it
The GIGABYTE P550SS offers a balanced mix of efficiency, modern ATX 3.0 compliance, and quiet operation for mid-range systems. Its single +12V rail and comprehensive protection make it a dependable choice for both gaming and productivity builds. Covered by the applicable manufacturer warranty.
| Weight | 2.3 kg |
|---|---|
| Purpose | PC |
| ATX version | 3.0 |
| Mean time between failures MTBF | 100000 h |
| Bearing technology | HDB |
| Product colour | Black |
| Fan diameter | 12 cm |
| On/off switch | Yes |
| Number of fans | 1 fan(s) |
| Fan location | Top |
| Cooling type | Active |
| Total power | 550 W |
| AC input voltage | 155-240 V |
| AC input frequency | 50/60 Hz |
| Input current | 6.3 A |
| Power factor | 0.9 |
| Power Factor Correction PFC type | Active |
| Combined power +3.3V | 100 W |
| Combined power +5V | 200 W |
| Combined power -12V | 3.6 W |
| Combined power +5Vsb | 15 W |
| Max output current +3.3V | 20 A |
| Max output current +5V | 20 A |
| Max output current -12V | 0.3 A |
| Max output current +5Vsb | 3 A |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
| Hold time | 16 ms |
| Efficiency | 90% |
| Motherboard power cable length | 60 cm |
| SATA power cable length | 500 mm |
| Peripheral Molex power cable length | 500 mm |
| PCI Express power cable length | 50 cm |
| CPU power cable length | 60 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 5 |
| Peripheral Molex power connectors 4-pin | 3 |
| PCI Express power connectors 6+2 pin | 2 |
| CPU power connector 4+4 pin | Yes |
| PCI Express connector | Yes |
| Floppy drive power connector | 1 |
| Floppy disk drive connector | Yes |
| ATX power connector 20+4 pin | Yes |
| Cabling type | Non-Modular |
| Width | 150 mm |
| Depth | 140 mm |
| Height | 86 mm |
| Harmonized System HS code | 84733020 |
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