Quick Answer
Yes, an entry-level UPS is enough for OBS recording, sized to keep the PC running long enough to stop the recording and shut down; a 1200VA to 1500VA unit covers a streaming PC. A 1200VA UPS (around R1,500 at Evetech, ~720W usable) gives a 400W OBS PC running 1080p60 NVENC several minutes to finish the file and power down.
Why Recording Needs A Few Protected Minutes
A power cut mid-recording can corrupt the OBS output file, losing the whole take. An entry UPS gives time to stop the recording cleanly so the file finalises, then shut down. This is about protecting your recorded content, not streaming through an outage. A 1200VA to 1500VA unit provides enough runtime for an OBS PC to wrap up gracefully, which is exactly what a recorder needs from a UPS.
Sizing For An OBS PC
An OBS recording PC, a Ryzen 5 7600 or Ryzen 7 7700X with an RTX 4060 encoding 1080p60 via NVENC, draws around 350W to 450W. A 1200VA unit (~720W usable) covers this plus a monitor with headroom for several minutes. NVENC offloads encoding to the GPU efficiently, keeping draw moderate. A 1000VA unit is the floor; 1200VA to 1500VA gives more comfortable runtime to finalise and save the recording.
Runtime, Settings And Setup
At 400W on a 1200VA (~720W) unit, expect roughly 8 to 12 minutes, ample to stop recording, let OBS finalise the file and shut down. Plug the PC and main monitor into the battery outlets; keep accessories on surge-only ports. In OBS, recording to a fragmented format like MKV protects against corruption if a cut happens before you stop. An entry 1200VA UPS gives recorders the safety margin they need.
FAQ
Is an entry UPS enough for OBS recording?
Yes. A 1200VA to 1500VA unit gives a 400W OBS PC several minutes to stop the recording, let the file finalise and shut down. That protects your recorded content from a corrupting power cut.
What size UPS for a streaming and recording PC?
A 1200VA unit (~720W usable) around R1,500 covers an OBS PC drawing 350W to 450W with NVENC, plus a monitor. A 1000VA unit is the floor; 1200VA to 1500VA gives more comfortable runtime to save the file.
How do I avoid losing an OBS recording to a power cut?
Use a correctly sized UPS and record to MKV, which resists corruption if a cut occurs before you stop. The UPS gives minutes to stop recording and finalise the file, protecting the take.
size a 1200VA UPS for your PC and record to MKV; the UPS gives minutes to stop and finalise the file, and MKV survives a cut before you press stop.