{"id":75,"date":"2026-07-14T13:27:05","date_gmt":"2026-07-14T13:27:05","guid":{"rendered":"https:\/\/bulkdevices.com\/blog\/?p=75"},"modified":"2026-07-14T14:08:32","modified_gmt":"2026-07-14T14:08:32","slug":"atx-vs-sfx-vs-sfxl","status":"publish","type":"post","link":"https:\/\/bulkdevices.com\/blog\/atx-vs-sfx-vs-sfxl\/","title":{"rendered":"ATX vs SFX vs SFX-L: Ultimate PSU Form Factors Guide"},"content":{"rendered":"

Picking a power supply by wattage alone is one of the most common mistakes first-time builders make. You can buy a unit with more than enough power for your rig and still end up with a PSU that won’t physically fit inside your case. That’s where the <\/span>ATX vs SFX vs SFX-L<\/b> question comes in \u2014 three form factors that do the same job but were built for completely different kinds of PCs.<\/span><\/p>\n

A lot of builders get these three mixed up because, on paper, they all convert wall power into clean, usable DC power for your components. What separates them is size, mounting compatibility, cooling capacity, and the type of build they were designed to support. Get the form factor wrong, and you’ll be stuck returning a PSU that simply won’t bolt into your case.<\/span><\/p>\n

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