I'm in the process of getting a UPS for my upcoming computer setup, which will primarily be used for local AI development. Here are my specs:
- CPU: Ryzen 7 9800X3D
- GPU: 2 x EVGA RTX 3090 FTW
- Memory: 64 GB DDR5
- Storage: 2 x 2 TB
- Monitors: 2 at 1440p
- PSU: Super Flower Leadex Titanium 1600W ATX3.1
I'm looking for a UPS that I can plug into a regular 15A outlet at 120V. The challenge is that I can only draw a maximum continuous load of 80% (1440W), and modifying my home's electrical circuits isn't an option right now as I only have 15A circuits available, except in a few areas like the kitchen and garage.
I've estimated my continuous power draw to be around 1200-1400W with potential spikes that might push it higher, although I haven't tested it yet. I want to be careful with my UPS choice given these constraints. Here are some models I've considered:
- 1500VA/1500W: [CyberPower PR1500LCD](https://www.amazon.ca/CyberPower-PR1500LCD-Sinewave-Outlets-Mini-Tower/dp/B0083TXNMM)
- 1440VA/1440W: [Eaton 5PX G2](https://www.pc-canada.com/item/eaton-5px-g2-1440va-1440w-120v-line-interactive-ups/5px1500rtg2)
- 2000VA/1600W: [Tripp Lite](https://www.directdial.com/ca/item/tripp-lite-by-eaton-120v-2000va-1600w-double-conversion-smart-online-ups/su2000lcd1u)
- 2500VA: [Eaton Powerware](https://excessups.ca/eaton-powerware-ups-2500va-pw5130l2500-xl2u-refurbished)
I really just need protection for my PC setup to avoid overloads, as anything else would push my circuit too far. What should I actually go for?
2 Answers
I get where you're coming from with wanting that extra buffer for spikes, especially with AI workloads. But honestly, 1200-1400W is manageable. You should be just fine with either the 1500VA or 1440VA models. They should give you enough wiggle room, and you won't have to worry about tripping circuits. Plus, these UPS units can help smooth out any brownouts you may experience, which is a big plus!
You may not need as high of a UPS as you think! For your setup, even if you push it to around 1400W max, you'd be safe with a 1500W or 1440W UPS. Those models you mentioned look solid for your needs, especially since you're only using one outlet. You really shouldn't need the higher VA models unless you plan on adding more components later. Just make sure your UPS is rated for at least 80% of your max load, and you'll be fine! Plus, the PSUs generally don't run at full load all the time, so you'll likely be under that peak.
Exactly! I ran similar components in the past, and even during intense tasks, I rarely hit the max wattage. Stick with the 1500W or 1440W; it'll handle your spikes without issues.
Right, and don't forget that having a UPS also gives you time to save your work before you get cut off, which isn't something to overlook!