Seasonic vs Be Quiet!: PC Power Supplies Compared by Specs
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When you research seasonic vs be quiet PC power supply options, you will notice a major difference in product category. The Seasonic unit is a complete 300W power supply with an 80 PLUS Gold efficiency rating. The Be Quiet! item is actually a 0.45 m CPU power cable, not a power supply. You cannot directly compare their electrical specs. This guide clarifies that one is a component and the other is an accessory.
Key differences
| Aspect | Seasonic 300W Flex ATX Gold Power Supply | Be Quiet! 0.45 m CPU Power Cable |
|---|---|---|
| Product Type | 300W Power Supply | CPU Power Cable |
| Efficiency Rating | 80 PLUS Gold | not listed |
| ATX Version | ATX 12 V v 2.31 | not listed |
| Dimensions | not listed | 230 mm x 86 mm x 25 mm |
Which one should you choose?
Choose Seasonic 300W Flex ATX Gold Power Supply if
- You need a complete 300W power supply for a Flex ATX system.
- You require 80 PLUS Gold efficiency for better power conversion.
- You want a unit compliant with ATX 12 V v 2.31 standards.
Choose Be Quiet! 0.45 m CPU Power Cable if
- You already have a power supply and need a replacement CPU cable.
- You require a specific 0.45 m length for cable management.
- You are looking for a simple accessory rather than a full unit.
Verdict: These products serve entirely different purposes. You should choose the Seasonic unit if you need to power your entire PC system. You should choose the Be Quiet! cable only if you need to replace a specific connector for an existing power supply.
Specs: Seasonic vs Be Quiet
product category
You must first identify what you are actually buying. The Seasonic unit is a complete 300W power supply designed to power your entire system. It meets ATX 12 V v2.31 standards and includes active PFC. The Be Quiet! item is a 0.45 m CPU power cable. It is an accessory, not a power source. You cannot use the Be Quiet! cable to power your PC components on its own. This is a fundamental difference in what each product provides to your build.
efficiency rating
Efficiency matters for your electricity bill and system heat. The Seasonic power supply carries an 80 PLUS Gold rating. This means it achieves up to 90% efficiency at 50% load on 115 V AC input. The Be Quiet! cable data does not list an efficiency rating. Cables do not have efficiency ratings in the same way power supplies do. They simply conduct electricity. For your system's overall efficiency, the Seasonic unit provides the measurable standard you need to track.
form factor
Your case size dictates what fits inside. The Seasonic unit is a Flex ATX power supply. This compact form factor allows it to fit in smaller cases or industrial builds. The Be Quiet! cable has physical dimensions of 230 mm x 86 mm x 25 mm. This is the size of the cable itself, not a power supply. If you need a power supply to fit a specific chassis, the Seasonic Flex ATX design is the relevant specification here.
compatibility
You need to ensure parts work together. The Seasonic unit is compliant with ATX 12 V v2.31 and EPS 12 V standards. It uses a DC to DC converter design. This ensures stable voltage for your motherboard and components. The Be Quiet! cable is a CPU power cable. It connects to your motherboard's CPU power socket. It does not provide power itself. It relies on the power supply to deliver the necessary current. The Seasonic unit provides the power source that the cable connects to.
protection features
Safety is critical for your hardware. The Seasonic unit includes important protection features as part of its industrial design. It meets EMI, EMC, and safety standards. The Be Quiet! cable data does not list any protection features. Cables generally do not have active protection circuits. They are passive components. For system protection against power surges or faults, the Seasonic unit provides the necessary safeguards built into its design.
Which PSU matches your build needs
Users needing a compact system power source
You need a complete 300W power supply for a small form factor build. This Seasonic unit provides 80 PLUS Gold efficiency, ensuring up to 90% efficiency at 50% load on 115 V AC input. It meets ATX 12 V v2.31 standards and includes active PFC for stable power delivery to your components.
Owners of existing Seasonic PSUs needing a cable
You already have a Seasonic power supply and simply need a replacement or extension cable. This Be Quiet! item is a 0.45 m CPU power cable. It is designed to connect your processor to the existing unit, offering a sleek design and reliable performance for your specific power connection requirements.
Builders prioritizing high efficiency in small cases
You are building in a tight space and require high efficiency to manage heat. This Seasonic 300W unit delivers 80 PLUS Gold certification. It features active PFC and complies with ATX 12 V v2.31 and EPS 12 V standards. This ensures your system runs reliably with minimal energy waste in a compact chassis.
The products compared
Seasonic 300W Flex ATX Gold Power Supply
Best for: compact high-efficiency builds
- Wattage
- 300W
- Efficiency Rating
- 80 PLUS Gold
- ATX Version
- ATX 12 V v 2 31
- Power Factor Correction
- Active PFC
View on Amazon: Seasonic 300W Flex ATX Gold Power Supply Affiliate link
This Seasonic unit delivers 300 watts in a compact Flex ATX form factor. It carries an 80 PLUS Gold efficiency rating, reaching up to 90% efficiency at 50% load on 115 V input. The design includes active PFC and meets ATX 12 V v2.31 standards. It suits users needing reliable, high-efficiency power for small form factor builds or industrial applications where space and thermal management matter.
Pros
- 300W output capacity
- 80 PLUS Gold efficiency rating
- Active PFC circuit design
- ATX 12 V v2.31 compliant
Cons
- 300W wattage limits high-end GPU support
- Flex ATX size restricts compatibility with standard cases
- No cable length or connector type details provided
Good fit if
- You need a high-efficiency power source for a small form factor PC
- You require ATX 12 V v2.31 compliance for modern components
- You are building an industrial or specialized enclosure
Skip if
- You need more than 300W for gaming or heavy workloads
- You require a standard ATX size for easy case installation
- You need detailed cable length specifications for tight spaces
Verdict: Seasonic 300W Flex ATX Gold PSU offers solid efficiency and compliance for compact builds. It fits users prioritizing power quality and size over raw output capacity.
Be Quiet! 0.45 m CPU Power Cable
Best for: Small form factor builds with short CPU runs
- Dimensions
- 9.06 × 3.54 × 1.18 inches
- Weight
- 3 ounces
View on Amazon: Be Quiet! 0.45 m CPU Power Cable Affiliate link
This Be Quiet! cable connects your power supply to the CPU socket. It measures 0.45 meters in length with a 9.06-inch reach. The black design fits standard builds. You get a reliable connection for your processor. The compact size helps with cable management in smaller cases. It is a straightforward accessory for desktop assembly.
Pros
- 0.45-meter cable length
- Black color for clean builds
- Compact 3-ounce weight
Cons
- Short 0.45-meter length limits reach
- No mention of braided sleeving
- Fixed length prevents customization
Good fit if
- You need a short CPU power run
- You are building in a small case
- You prefer a low-profile cable
Skip if
- You require a longer cable reach
- You want a braided aesthetic
- You need a modular extension
Verdict: Be Quiet! 0.45m CPU Power Cable suits users with tight space constraints who need a direct, short connection to the motherboard. It is not suitable for larger cases requiring extended reach.
Specifications side by side
| Spec | Seasonic 300W Flex ATX Gold Power Supply | Be Quiet! 0.45 m CPU Power Cable |
|---|---|---|
| Wattage | 300W | not stated |
| Efficiency Rating | 80 PLUS Gold | not stated |
| ATX Version | ATX 12 V v 2 31 | not stated |
| Power Factor Correction | Active PFC | not stated |
| Dimensions | not stated | 9.06 × 3.54 × 1.18 inches |
| Weight | not stated | 3 ounces |
| Color | Multicolor | Black |
| Model | SSP-300SUG | BC060 |
| Size | not stated | 230 mm x 86 mm x 25 mm |
Frequently asked questions
Is the Seasonic 300W Flex ATX Gold a complete power supply?
Yes, it is a complete unit. This Seasonic model delivers 300W of power and features 80 PLUS Gold efficiency. It includes active PFC for stable voltage. You can use it to power a compact system without needing additional components.
Is the Be Quiet! BC060 a power supply unit?
No, it is not a power supply. This item is a 0.45 m CPU power cable. It connects your power supply to the motherboard. It is designed for small form factor builds where space is tight and a short run is necessary.
Does the Seasonic Flex ATX have active PFC?
Yes, it does. The Seasonic 300W unit includes active PFC. This feature helps manage power factor and improves efficiency. It ensures the power supply draws current more cleanly from the wall outlet, which is beneficial for overall system stability.
What is the best use case for the Seasonic Flex ATX?
It is best for compact high-efficiency builds. This unit fits users who prioritize power quality and small size. It is not ideal if you need high raw output capacity. It suits systems where space is limited but efficiency matters.
Can the Be Quiet! cable replace a power supply?
No, it cannot. The Be Quiet! BC060 is only a cable. It does not convert AC power to DC. You must have a separate power supply unit to provide power. This cable simply extends the connection to the motherboard.
Does the Be Quiet! cable come in other colors?
The data lists the color as Black. No other color options are mentioned in the specifications. You should assume it is black unless the retailer specifies otherwise. It is designed to blend in with standard PC components.
Is the Seasonic unit suitable for large gaming PCs?
It may not be suitable for large gaming PCs. This unit provides only 300W of power. High-end gaming systems often require more power. This Seasonic model is better suited for compact or low-power builds rather than high-performance desktops.