be quiet! SFX POWER 3 300W power supply unit 20+4 pin ATX Black
KEY FEATURES
- Strong 12V rail with 300W of continuous power
- 6+2 pin PCIe connector for GPU support
- High-quality temperature-controlled 80mm fan for quiet operation of max. 29.4dB(A)
- Sleeved or flat black cables up to 60cm
- 80 PLUS® Bronze efficiency (up to 89.2%)
- Meets the latest safety and efficiency requirements
- Standby draw less than 0.1 watts
- Product conception, design and quality control in Germany
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Frequently Asked Questions

be quiet! SFX POWER 3 300W power supply unit 20+4 pin ATX Black
Description
be quiet! SFX POWER 3 300W. Total power: 300 W, AC input voltage: 100 - 240 V, Peak power: 350 W. Motherboard power connector: 20+4 pin ATX, Motherboard power cable length: 35 cm, SATA power cable length: 300,450,600 mm. Purpose: PC, Power supply unit (PSU) form factor: SFX, 80 PLUS certification: 80 PLUS Bronze. Product colour: Black, Cooling type: Active, Fan diameter: 8 cm. Width: 125 mm, Depth: 100 mm, Height: 64 mm
SFX Power 3 300W, the compact PSU from be quiet! that gives you more for your mini or media PC. It provides enough power to support powerful PCIe graphics cards while offering the ideal combination of power, quietness and reliability. That makes it the perfect choice for compact PC systems that perform beyond the ordinary.
Warranty: 3 Years
Feature
Easy 14 days Returns
Eligible for Next day Delivery
100% Money-back guarantee
24/7 Customer support
Secure payment method
Shipping Information
- Next Business Day: £6.99
- 2 days Delivery: £4.99
- 3- 5 Days Shipping: £3.99
- Orders Over £99.00: Free Standard Delivery
Power | |
---|---|
Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
Efficiency | 88.1% |
Hold time | 26.8 ms |
Max output current (+5Vsb) | 2.5 A |
Max output current (-12V) | 0.3 A |
Max output current (+5V) | 16 A |
Max output current (+12V1) | 25 A |
Max output current (+3.3V) | 16 A |
Combined power (+5V) | 85 W |
Combined power (+12V) | 300 W |
Combined power (+3.3V) | 85 W |
Power Factor Correction (PFC) type | Active |
Power factor | 0.98 |
Maximum input current (@220V) | 2 A |
Maximum input current (@110V) | 5 A |
Input current | 5/2 A |
AC input frequency | 50 - 60 Hz |
AC input voltage | 100 - 240 V |
Peak power | 350 W |
Total power | 300 W |
Ports & interfaces | |
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Cabling type | Non-Modular |
Floppy disk drive cable length | 60 cm |
Floppy drive power connector | 1 |
CPU power cable length | 40 cm |
CPU P4 connector (4-pin) | 1 |
PCI Express power cable length | 40 cm |
PCI Express power connectors (6+2 pin) | 1 |
Peripheral (Molex) power cable length | 300,450 mm |
Peripheral (Molex) power connectors (4-pin) | 2 |
SATA power cable length | 300,450,600 mm |
Number of SATA power connectors | 3 |
Motherboard power cable length | 35 cm |
Motherboard power connector | 20+4 pin ATX |
Performance | |
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Safety | CE, CB, TÜV, CU |
Mean time between failures (MTBF) | 100000 h |
Bearing technology | Rifle |
Noise level | 29.4 dB |
EPS version | 2.92 |
ATX version | 3.42 |
80 PLUS certification | 80 PLUS Bronze |
Power supply unit (PSU) form factor | SFX |
Purpose | PC |
Design | |
---|---|
On/off switch | Yes |
Number of fans | 1 fan(s) |
Fan diameter | 8 cm |
Cooling type | Active |
Product colour | Black |
Weight & dimensions | |
---|---|
Weight | 840 g |
Height | 64 mm |
Depth | 100 mm |
Width | 125 mm |
Packaging data | |
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Package type | Box |
Package weight | 1.19 kg |
Package height | 207 mm |
Package depth | 75 mm |
Package width | 197 mm |
Technical details | |
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Sustainability compliance | Yes |
Compliance certificates | RoHS, WEEE |
Sustainability certificates | ENERGY STAR, ErP |
Logistics data | |
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Shipping (inner) case length | 45.7 cm |
Shipping (inner) case width | 26.5 cm |
Shipping (inner) case height | 23.3 cm |
Products per shipping (inner) case | 6 pc(s) |
Shipping (inner) case gross weight | 7.91 kg |
Other features | |
---|---|
Harmonized System (HS) code | 84733020 |
Frequently Asked Questions
When will it arrive?
Any order over £99 wil be shipped on our free 2-3 working day service, if you opt for Next Working Day shipping then this will be with you the next working day between 09:00 and 18:00. Deliveries to Northern Ireland, Channel Islands and the Scottish Highlands will be on a 3 day service.
Do you offer a credit account?
We offer credit accounts to Gotraka Business customers, please enquire with our customer support team for more information. Credits accounts are subject to KYC.
How long is the returns policy?
For most products bought online, you have a legal right to change your mind within 14 days and receive a refund. If you wish to return unwanted products, you must let us know that you want to return them within 14 calendar days from the day after delivery. The item must also be returned to us within 7 working days from approval of return and receipt of the return label.
How long will it take to receive my order?
This is something that we are working hard to bring to you - we recognise that having deliveries on preferred days not only makes it easier for you but it is also great for the environment. By having deliveries arranged on days that you are going to be in or consolidating your orders to arrive to you at the same time means that the courier won't need to come back multiple times due to missed deliveries or multiple deliveries.
Can I change my delivery address once the order has been placed?
Our systems are highly automated, where possible we will do our utmost to accommodate this. To ensure we maintain a high delivery success rate most of our orders are picked and prepped for shipment within 30 minutes
How do I return my order?
If you need to return your order please raise a return through your order page detailing the reason for return. Once this form has been submitted it will be reviewed by the Returns Department who will contact you to arrange the return.
Please note the returns department may ask for more information such as the serial number(s) and images where applicable to process the return.
How long do I have to return an item?
For most products bought online, you have a legal right to change your mind within 14 days and receive a refund. If you wish to return unwanted products, you must let us know that you want to return them within 14 calendar days from the day after delivery. The item must also be returned to us within 7 working days from approval of return and receipt of the return label
Are returns free?
Returns for faulty / damaged items will be free of charge
Returns for unwanted items that have no fault will incur a minimal returns fee - delivery charges will not be refunded
Can’t find what you’re looking for?
Our friendly support team is just a message away, ready to assist with anything. Our team is experienced with gaming gear, home tech, and everything in between—feel free to reach out.
📧 Email: help@gotraka.com
📞 Phone: 020 8208 1234
💬 Live Chat: Available 9 AM – 6 PM ( Monday - Friday )