ATX Power Supply (PSU) ⏻
# Démarrer une alimentation ATX
Sans carte mere.
Sinon il est plus safe de le faire depuis le connecteur dedie de la carte mere: celui dedié au bouton on.
# Stock Usage
| Model | Price | Year | Perf | In | Description |
|---|---|---|---|---|---|
| BeQuiet 350W | 80+ | pc 2013 | |||
| Corsair CX450M | 68€ | 2025 | Mac classic | cable semi modulaire | |
| Corsair CV550 | 65€ | 2020 | 80 Plus Bronze | black tower | |
| CORSAIR RM850x | 125€ | 2026 | Cybenetics Gold (91%) | Full Modular |
# Voltage
# Input
Is a regular C14 Female socket
# ATX 20/24 broche
# ATX P4 / connector processor
12V only
# PCIExpress / GPU
# Molex
5V / 12V
Same for Berg Floppy Power Connector
# Sata
3.3V / 5V / 12V
# Grounding
- Is it true that PC power supply screws are ‘connected’ to earthing/grounding pin of the power supply?
- this also true with motherboard screws.
# Misc
Screws to fix ATX PSU are not metrics, They are:
Type: #6-32 UNC (Unified National Coarse) Thread diameter: 0.138 inch (3.51 mm) Thread pitch: 32 threads per inch Head type: Usually pan head or hex head with a Philips drive Length: Common lengths are 1/4 inch (6.35 mm) or sometimes 5/16 inch (7.94 mm)
see also
Written on June 3, 2019, Last update on January 24, 2026
ATX
power
pc-hardware