Choosing a UPS for critical power protection often comes down to two very different packages: a used rackmount unit with extra output capacity, or a brand-new tower unit with surge protection and automatic voltage regulation. At around $192 and $200, the APC Back-UPS Pro BR1500G and the APC Smart-UPS X SMX1500RM2UNC sit almost side by side in price, yet they serve different installations.
Quick verdict: If your equipment lives in a rack and you need the headroom of 1200W of continuous output, the APC Smart-UPS X is the stronger fit-just remember you're buying a used unit with no battery included. If you want a fresh, ready-to-go tower that guards against surges and voltage dips, the APC Back-UPS Pro is the more convenient choice.
At a glance:
| Feature | APC Smart-UPS X SMX1500RM2UNC | APC Back-UPS Pro BR1500G |
|---|---|---|
| Listed price | $199.99 | $191.95 |
| Form factor | Rackmount tower 2U | Compact tower |
| Condition | Used, working tested | New |
| Rated capacity | 1500VA / 1200W | 1500VA |
| Outlets | Not specified | 10x NEMA 5-15R |
| Key protections | Not specified | Surge protection, AVR |
AVR stands for automatic voltage regulation.
Where each product wins:
- The Smart-UPS X wins for rack installations and higher output capacity at 1200W.
- The Back-UPS Pro wins for new condition, built-in surge protection, AVR, and ten on-board outlets.
APC SMX1500RM2UNC Smart-UPS X
This is the one to choose when your power protection has to live in a 2U rack slot. The Smart-UPS X delivers 1500VA and 1200W of output, giving you more headroom for heavier equipment. It's a used unit, but it has been functionally tested: it powers on, the display works, and the battery charging function is confirmed working. That said, the listing clearly states no internal or replacement battery is included, so you'll need to factor in buying one before this unit can actually carry your load during an outage. Expect some normal wear marks from prior rack use. If you already have a rack and can source a battery, this is a practical way to get a serious 1200W UPS.
APC BR1500G Back-UPS Pro
The Back-UPS Pro is the "plug in and not worry" option. It's brand new, so you get that fresh-out-of-box experience, and it comes with ten NEMA 5-15R outlets for hooking up your computer, monitor, router, and peripherals. Its built-in surge protection and automatic voltage regulation (AVR) help smooth out fluctuating power before your gear even notices. The compact tower form means it fits next to a desk or on a shelf rather than in a rack. The tradeoff is that it doesn't offer the same rack-mount flexibility or 1200W output as the Smart-UPS X. If your main concern is a simple, new, protected setup for a workstation, this is the safer choice.
Final choice by use case: For a rack-based environment that needs greater continuous output at this price point, go with the APC Smart-UPS X and budget for a replacement battery. For a new, hassle-free tower UPS with surge protection and multiple outlets, the APC Back-UPS Pro is the pick.
