When the power drops, a UPS gives you the minutes to save work and shut down cleanly. But with four different backup units on the table, the real decision is whether you need a desktop model or a high-capacity rackmount system.
The units here split into two approaches: two Goldenmate models with desktop-oriented designs, and two Libert Vertiv units in a rackmount/tower chassis with a higher VA rating. Both Goldenmate units are Certified - Refurbished, while the Libert Vertiv units are listed as Used, so condition differs between the two groups. The price gap between the cheapest and most expensive of the four is modest.
Quick take
All four options range from $125.99 to $151.99, so the real differentiators are capacity and form factor. The Libert Vertiv units have the highest capacity here and use a different physical layout from the Goldenmate desktop units. If you're outfitting a desk, the lower-capacity Goldenmate is the lowest-priced path. The Goldenmate UPS 1000VA/800W is the only one of the four with an 800W output. For most desktop setups, the lower-capacity Goldenmate can handle a computer and a few peripherals during an outage.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| Goldenmate UPS 1000VA/800W LiFePO4 | USD 151.99 | |
| Libert Vertiv PSI5-1500RT120 1500VA/1350W Rackmount UPS Battery Backup Qty 1 | USD 149.99 | |
| Libert Vertiv PSI5-1500RT120 1500VA/1350W Rackmount UPS Battery Backup Qty 1 | USD 149.99 | |
| Goldenmate 1000VA/600W LiFePO4 | USD 125.99 |
Decision matrix
| Use case | Best match | Why it works |
|---|---|---|
| Desktop or home office | Goldenmate 1000VA/600W | Lowest listed price, LiFePO4, 10-year battery life |
| PC with a higher power draw | Goldenmate UPS 1000VA/800W | More wattage (800W) with LiFePO4 and surge protection |
| Rackmount or network closet | Libert Vertiv PSI5-1500RT120 (two units) | 1500VA/1350W capacity, rackmount/tower form factor |
Product notes
Goldenmate UPS 1000VA/800W LiFePO4 Battery Backup UPS Surge Protector for PC

This white UPS is the highest-priced in this set at $151.99, but it packs 1000VA and 800W into a desktop-friendly footprint with one cooling fan. Its LiFePO4 battery and built-in BMS add surge protection. As a Certified - Refurbished unit, it is a refurbished product, not new. If you need the extra 200W over the smaller Goldenmate model and prefer the same LiFePO4 chemistry, this is the one to choose. The trade-off is the higher price and the fact that you're still stepping into a refurbished unit. It measures 16.93 inches long and 12.01 inches high, so it needs a reasonably wide shelf.
Libert Vertiv PSI5-1500RT120 1500VA/1350W Rackmount UPS Battery Backup Qty 1

At $149.99, this rackmount/tower unit delivers the highest capacity in this comparison at 1500VA and 1350W. It's listed as Used and features an LCD status display with pure sine wave output. The LCD lets you monitor load and battery status at a glance, while the input range covers 100-125 VAC at 50/60Hz. For a server rack or equipment closet that needs more power, this is the highest-capacity option here. A second copy of the same model is available at the same price, so you can buy two units if you need to protect two locations. The catch: each unit is used, and the rackmount form factor takes up more physical space than the Goldenmate desktop models.
Goldenmate 1000VA 600W LiFePO4 UPS, Home & Office Guardian - Refurbished

The lowest-priced option at $125.99, this gray UPS uses LiFePO4 cells and comes with a 10-year battery life rating and a cycle life of at least 3000 cycles. It's also Certified - Refurbished. The 600W capacity is the lowest here, so it's best for a single desktop computer, modem, and router rather than a full workstation with multiple monitors. If you're shopping on a budget and want the longevity of LiFePO4 chemistry without paying for the 800W model, this is the lower-priced way into that battery type. The listed dimensions are 12.99 inches long and 9.84 inches high.
Final recommendation
For a home or small office desktop, the Goldenmate 1000VA 600W at the bottom of the price range is the one to pick. It has enough capacity for a modem, router, and a single computer. If you run a multi-monitor workstation or a PC with a beefier power supply, the Goldenmate UPS 1000VA/800W gives you 200W more headroom. For a rack or network closet, the Libert Vertiv PSI5-1500RT120 at $149.99 provides the most capacity, and the second unit gives you a way to buy two if needed. All four are either Certified - Refurbished or Used, so the condition should factor into your purchase as much as the wattage.