Gaming PC & RTX Power Backup in Bangladesh — Pure Sine IPS vs Online UPS
Engr. Lemon Mia
Head of Technical Operations & Power Systems · TNS Engineering Ltd.
Direct answer
High-end gaming PCs with RTX-class GPUs and Active PFC power supplies (650W–850W+) need a pure sine wave IPS (e.g. Kenson LX-1524 or LX-2024 on 24V) or a true online double-conversion UPS for medical/server-grade stability. Modified sine wave offline UPS units often cause reboots, PSU shut-down, or coil whine during transfer because Active PFC front-ends reject stepped waveforms.
1. Typical gaming load in Dhaka apartments
A modern RTX gaming build often draws:
- GPU + CPU peak: 450W–700W under gaming load
- Total desk load (monitor, router, RGB): 550W–850W
- Startup inrush: Active PFC PSUs can spike briefly higher — size IPS/UPS with 25–40% headroom
2. Recommended Kenson pure sine IPS architecture
| Setup | Recommended IPS | Battery bank | Est. backup @ ~500W |
|---|---|---|---|
| Single RTX mid-range + 650W PSU | Kenson LX-1524 (1500VA / 24V) | 2× 12V 130Ah–150Ah SMF | ~2.5–3.0 hours (50% DoD estimate) |
| RTX 4070/4080 class + 750W–850W PSU | Kenson LX-2024 (2000VA / 24V) | 2× 12V 200Ah SMF | ~3.0–3.5 hours (50% DoD estimate) |
3. When to choose online UPS instead
For dual-PC streaming rigs, workstation-class GPUs, or combined gaming + CCTV NVR loads above 1kW continuous, consider a true online UPS (e.g. Wismar KL series) with external battery bank sizing from TNS application engineering. Online topology delivers 0ms transfer and tighter voltage regulation for sensitive Active PFC supplies.
4. Why modified sine wave fails on gaming PSUs
Budget offline UPS units output a stepped approximation of AC. Active PFC controllers in modern ATX PSUs interpret the waveform as out-of-spec input, triggering protective shutdown or rapid cycling during the 4–10ms relay transfer — the PC appears to “hard reboot” every load-shedding event.
Calculate your backup time
Use the official TNS backup calculator (V × Ah × DoD × 0.85 ÷ W).
Need Custom Load Sizing or Engineering Consultation?
Our Dhaka technical team provides Single Line Diagram (SLD) reviews, battery bank sizing calculations, and industrial harmonic audit consultations for factories, hospitals, and homes across Bangladesh.