Do Small (SFX) PSUs Have Different Cables to Regular (ATX) PSUs?

Yes, they do. SFX PSUs come with significantly shorter cables. These units are built for very compact PC cases that don’t require the long cable runs typical of standard-sized PC cases.

Does the quality, design, or actual connections differ when compared to large ATX power supplies?

No. They use the same types of cables. While you can technically power a full-size PC with a smaller SFX PSU, the practicalities can be troublesome. In mid-to-large PC cases, it might be impossible to stretch the short cables far enough.

What type of case should I use with a SFX PSU?

SFX PSUs should only be used if you plan to build a PC in an SFF (Small Form Factor) case.

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CORSAIR SF1000 (2024) Small ATX 3.1 PCIe 5.1 1000W Power Supply – Black

Product ID: 639172470

Details

Brand
Corsair
Compatible Devices
Monitor
Connector Type
ATX
Cooling Method
Fan (92mm PWM)
Form Factor
SFX Internal
Item Weight
2.3 pounds

⚡1000W Platinum Power

🧩Fully Modular Flexibility

❄️92mm Low-Noise Cooling

$559.59

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Description

⚡ Power your elite build with silent, platinum-grade precision!

CABLE ZEN - Fully modular Type-5 Micro-Fit connectors for ultra-clean builds and effortless cable management.
BUILT TO LAST - Premium 105°C Japanese capacitors ensure rock-solid reliability backed by a 7-year warranty.
COMPACT POWERHOUSE - 1000W of 80 PLUS Platinum efficiency in a sleek SFX form factor—power meets space-saving elegance.
FUTURE PROOF READY - ATX 3.1 & PCIe 5.1 compliant to handle next-gen GPUs and resist power spikes with ease.
WHISPER QUIET COOLING - 92mm PWM fan with fluid dynamic bearing and Zero RPM Mode keeps your rig cool and silent.

The CORSAIR SF1000 (2024) is a compact, fully modular SFX power supply delivering 1000 watts of 80 PLUS Platinum-certified power. Designed for high-performance small-form-factor PCs, it supports the latest ATX 3.1 and PCIe 5.1 standards, features a whisper-quiet 92mm PWM fan with Zero RPM Mode, and uses premium 105°C Japanese capacitors for exceptional durability. Includes an SFX-to-ATX bracket and a 7-year warranty, making it a future-proof, reliable choice for demanding professionals and gamers alike.

Specifications

ASIN	B0D45RN3KZ
Best Sellers Rank	#12 in Computer Power Supplies
Brand	Corsair
Built-In Media	Item
Compatible Devices	Monitor
Connector Quantity	1
Connector Type Used on Cable	ATX
Cooling Method	Fan (92mm PWM)
Customer Reviews	4.4 4.4 out of 5 stars (203)
Fan Size	9.2 centimeters
Form Factor	SFX,Internal
Item Dimensions	4.92 x 3.94 x 2.5 inches
Item Weight	2.3 pounds
Manufacturer	Corsair
Maximum Input Voltage	13.6 volts
Mfr Part Number	CP-9020257-NA
Minimum Input Voltage	6.8 volts
Model Name	SF1000
Model Number	CP-9020257-NA
Number of Fans	1
Number of Items	1
Output Wattage	1000
Power Supply Design	Full Modular
System Bus Connector Type	24 Pin, 8 Pin or 4+4 Pin
UPC	840006663409
Unit Count	1 Count
Upper Temperature Rating	105 °C
Warranty Description	7 Year Manufacturer
Wattage	1000 watts

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