Which UPS delivers more usable watt capacity and how long will it run your load?

The APC SMC1000I-2U is rated at 600W / 1000VA, meaning its power factor is 0.6 — a meaningful derating for resistive or mixed loads. The CyberPower PR1000LCD is rated at 1000W / 1000VA (power factor 1.0), delivering the full kilovolt-ampere figure as usable watts. For a load drawing 600W, the APC is at its ceiling while the CyberPower still has 400W of headroom.

On runtime, the CyberPower spec sheet states 3.1 minutes at 1000W full load and 10.5 minutes at 500W half load. The APC provides no runtime figures in the supplied specifications. The CyberPower carries 2 × 12V/12Ah batteries (user-replaceable per spec); APC specs confirm sealed lead-acid chemistry but do not disclose amp-hour rating or runtime estimates. Buyers who need to size backup duration for APC must consult APC's runtime chart separately — that data is absent here.

Both units specify a 3-hour typical recharge time. The CyberPower additionally documents an 8-hour eco-mode recharge option; no equivalent mode is stated for the APC.

Are these units compatible with your site's voltage standard and physical installation requirements?

Voltage compatibility is the sharpest dividing line between these products. The APC SMC1000I-2U operates on 230V nominal (input range 170–300V, mains range 180–287V) and outputs 230V. The CyberPower PR1000LCD operates on 120V nominal (78–149V operating range) and outputs 120V ± 5%. These are mutually exclusive voltage classes; a North American 120V site cannot use the APC, and a 230V international site cannot use the CyberPower.

Form factor is equally decisive for installation planning. The APC occupies 2U of rack space (86 mm H × 432 mm W × 406 mm D, 20.52 kg) and requires a standard 19-inch rack enclosure. The CyberPower is a mini-tower measuring 6.7 × 8.7 × 17 inches and mounts on a floor or desktop — no rack required. There is no overlap in mounting method.

The APC's rack format is certified under C-tick, CE, GOST, and VDE — European and Commonwealth regulatory marks. The CyberPower carries UL1778, cUL 107.3, FCC DOC Class A, Energy Star, and RoHS — North American and international marks. Neither unit's certifications are cross-listed for the other's primary market.

What load connectivity, monitoring ports, and management software does each unit provide?

The CyberPower PR1000LCD specifies 8 × NEMA 5-15R outlets, all battery- and surge-protected, with 4 designated as critical-load priority. The NEMA plug format is specific to 120V North American wiring. The APC SMC1000I-2U's outlet count and connector types are not stated in the provided specifications; buyers must source that data from APC's product page before comparing load connectivity.

For surge protection, the CyberPower rates 1030 Joules and the APC rates 459 Joules — a 124% difference in rated surge energy absorption. Both figures are from the supplied specs.

Management connectivity: the APC lists RJ-45 Serial and USB. The CyberPower lists USB, Serial, and SNMP. SNMP support enables the CyberPower to integrate with network management systems without an add-on card; the APC spec does not mention SNMP capability. The CyberPower bundles PowerPanel Business Edition software and includes a multifunction LCD with a 4.5 ft removable cable. The APC lists an LCD display in its product name but the provided specs do not detail display specifications or bundled software.

Which should you choose: the SMC1000I-2U or the PR1000LCD?

Our take: The PR1000LCD is the stronger choice when the installation site runs 120V North American power and demands full watt-for-watt capacity, higher surge energy absorption, and native SNMP management. Its 1000W true output (vs. the APC's 600W at the same 1000VA), 1030J surge rating (vs. 459J), and built-in SNMP connectivity represent concrete specification advantages for protected North American loads. The SMC1000I-2U is the correct selection for any 230V infrastructure deployment requiring a rack-mount form factor — it is the only one of the two designed for 230V input and output, and its 2U rack chassis fits standard 19-inch cabinets that the tower-format CyberPower cannot occupy. Runtime data is unavailable for the APC in these specs, so duration-sensitive deployments must consult APC's published runtime charts before specifying. Do not treat these as cross-shoppable alternatives for the same site: voltage class alone makes them non-interchangeable.

Side-by-Side Comparison

Spec-for-spec, from manufacturer data.

Frequently Asked Questions

Related Resources

• APC by Schneider Electric SMC1000I-2U product page — full specs and to add to a quote
• CyberPower PR1000LCD product page — full specs and to add to a quote