I'm building my first PC and bought a Corsair SF1000 power supply before realizing that its cables are too short to comfortably reach my full-size ATX motherboard. I'm wondering whether I should return it and buy a standard ATX 1000W PSU with longer cables, or simply use reputable extension cables. I'm also concerned about choosing extensions that could damage the system.
3 Answers
The SF1000 is an SFX power supply, so it’s mainly intended for compact cases. If your case supports a standard ATX PSU, an ATX model will usually be cheaper and come with longer cables. Returning the SFX unit is probably the cleanest option if you haven’t installed it yet.
You don’t necessarily need to replace the PSU. First measure how much extra length you need, then compare that with the motherboard cable lengths listed by the manufacturer. A good-quality 24-pin and EPS extension should work fine for this situation.
Extensions from a reputable cable maker are generally safe because they simply add length to the existing PSU cables. Make sure they’re rated for the required power and connector type. Never use modular replacement cables from another PSU brand or model, since the pinouts may be different and could damage the PC.
A friend helped me choose the parts and originally described the PSU as a temporary option, but I forgot about that. I should have checked the form factor more carefully before buying everything.