APC UPS, ENERGY STAR certified
APC SMX750CUS
750 VA / 675 W line interactive UPS.
APC Smart-UPS X 750VA Rack/Tower LCD 120V with SmartConnect TAA-Compliant
Capacity
750 VA
675 W real power
Topology
Line Interactive
Efficiency
98.7%
weighted, as tested
Runtime @ 50%
30 min
13 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 750 VA and 675 W, so the equipment plugged into its battery outlets should draw no more than about 540 W if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 98.7% compares with a median of 98.7% across 105 certified units within 25% of its capacity. With nothing plugged in it still draws 4.4 W, about $4.98 a year at 13¢/kWh just to stand ready.
- Maker
- APC
- Model
- SMX750CUS
- Description
- APC Smart-UPS X 750VA Rack/Tower LCD 120V with SmartConnect TAA-Compliant
- Apparent power rating
- 750 VA
- Real power rating
- 675 W
- Power factor
- 0.90
- Topology
- Line Interactive
- Intended use
- Commercial
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 30 min
- Runtime at 100% load
- 13 min
- Battery warranty
- 2 yr
- Weighted efficiency
- 98.7%
- Efficiency at 25 / 50 / 75 / 100% load
- 97.4% / 98.5% / 98.8% / 98.9%
- Input power at no load
- 4.4 W
- Outlets
- 8 (8 battery + surge, 0 surge only)
- Rack mountable
- No
- Rated input voltage
- 120 V
- Rated output voltage
- 120 V
- Connections
- Serial Port,Ethernet,USB Port
- Size (H x W x D)
- 432 x 89 x 490 mm
- Maker take-back program
- Yes
- On the market since
- Sep 2021
- ENERGY STAR certified
- 25 Aug 2020
Certified under the same record
The maker lists these as the same machine or a variant of it: APC Smart-UPS X 750VA Rack/Tower LCD 120V with SmartConnect TAA-Compliant Factory Serviced, SMX750CUSW, Std Exch APC Smart-UPS X 750VA Rack/Tower LCD 120V with SmartConnect TAA-Compliant, SMX750CUSQ.
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2365095, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the SMX750CUS
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| CyberPower PR750ERTXL2U | 750 VA / 750 W | Line Interactive | 98.5% | 27 min |
| CyberPower PR750RTXL2U | 750 VA / 750 W | Line Interactive | 98.5% | 29 min |
| Tripp Lite AG-0314 | 750 VA / 450 W | Passive Standby | 99.4% | 9 min |
| Tripp Lite AG-0315 | 750 VA / 450 W | Passive Standby | 98.9% | 9 min |
| CyberPower PR750LCD | 750 VA / 525 W | Passive Standby | 98.5% | 17 min |
| CyberPower SL750U | 750 VA / 375 W | Passive Standby | 98.5% | 8 min |
APC
More APC UPS battery backups
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| APC Back-UPS 350 | 350 VA / 210 W | Passive Standby | 98.0% | 20 min |
| APC Back-UPS 350VA X545 120V | 350 VA / 210 W | Passive Standby | 98.0% | 20 min |
| APC Back-UPS 400VA 120V Slim Flexible Mounting | 400 VA / 220 W | Passive Standby | 98.5% | 20 min |
| APC Back-UPS 500 (beige) | 500 VA / 300 W | Passive Standby | 98.6% | 15 min |
| APC Back-UPS 500 (black) | 500 VA / 300 W | Passive Standby | 98.6% | 15 min |
| APC Back-UPS 650VA 120V 8 NEMA outlets (4 surge) | 650 VA / 390 W | Passive Standby | 98.8% | 12 min |
| APC Back-UPS BE550G | 550 VA / 330 W | Passive Standby | 98.6% | 13 min |
| APC Power Saving Back-UPS Pro 1500 | 1,500 VA / 865 W | Line Interactive | 98.9% | 13 min |