Can I really keep gaming through load shedding?

Yes — with the right power backup. A 1500-2000VA pure sine wave UPS keeps a typical gaming PC and monitor running for 15-45 minutes, enough for short Stage 1-2 outages. For full 2-hour Stage 4 outages, you need either a larger UPS+battery setup (R8,000-R15,000), an inverter+battery solution (R12,000-R25,000), or hybrid solar with batteries (R30,000+).

What size UPS do I need for my gaming PC?

Add up your PC's wattage (typically 350-700W under gaming load) + monitor (30-80W) + internet/router (20W). Multiply by 1.5 for safety headroom. A 750W gaming PC + 60W monitor + 20W router = 830W × 1.5 = 1245W. You want a UPS rated at least 1500VA / 900W for that load. Larger UPS units (2000-3000VA) extend runtime.

Pure sine wave vs modified sine wave UPS — does it matter?

Yes, hugely. Pure sine wave is mandatory for gaming PCs. Modified sine wave UPS units can damage power supplies, cause audio buzzing, and trigger PSU shutdowns. The price gap has narrowed — Mecer 1500VA pure sine costs R3,500 versus R2,500 for the modified equivalent. The R1,000 difference is worth it on any system with a R10,000+ GPU.

How long will a UPS run my gaming PC?

A 1500VA / 900W pure sine UPS gives 15-30 minutes runtime on a typical mid-range gaming load. Cut the runtime nearly in half if you're gaming at full GPU load. Add 50% if you're just doing desktop work after the outage hits. For 2-hour Stage 4 outages, you need either external battery extension or move to inverter+battery.

UPS vs inverter — which is right for SA gaming?

UPS for short outages (under 30 minutes) with fast automatic switchover (4-10ms — fast enough to be invisible to the PC). Inverter+battery for longer outages (1-4 hours) with bigger batteries (100-200Ah) but slower switchover. For Stage 4-6 SA load shedding, hybrid setups (UPS for instant switch + inverter for long runtime) work best. Cost: R12,000-R25,000 depending on battery capacity.

Will load shedding damage my gaming PC?

Yes — both sudden outages and 'dirty' restored power can cause damage. The sudden cut causes file system corruption (SSD wear-out events) and risks data loss. When power returns, brief surges can damage PSU components or cause SSD controller failures. A UPS with surge protection eliminates 90%+ of these risks. The R3,500-R6,000 UPS spend protects R20,000-R60,000 of PC.

What about the internet router during load shedding?

Your fibre ISP almost certainly stays online during load shedding — they have their own backup power on the network. But your home router will go down without backup. A small 600-1000VA UPS or dedicated router battery backup (Mecer Mini-UPS R1,200) keeps your router and ONT up for 4-8 hours. Without it, even if your PC is on UPS, you have no internet.

Should I get a generator instead?

Generally no for gaming. Petrol generators produce 'dirty' power (high THD) that damages sensitive electronics. You'd need an inverter generator (Honda EU22i, Yamaha EF2200iS — R30,000-R45,000) for clean power, which is more expensive than equivalent inverter+battery setups. Plus the noise, fuel, and outdoor placement requirements. Battery-based backup is the right choice for gaming.

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How to Game During Load Shedding in SA - Editorial

SA-Specific · Load Shedding

Gaming through load shedding. — UPS, inverter, battery: what actually works.

Three options, dramatically different prices, very different outcomes. The wrong choice means buzzing PSU, dead fibre or a fried R30,000 GPU when power returns. The right one keeps you in-game for the whole outage.

10 min read
Updated May 2026
Reviewed by Evetech Hardware Team

By the end of this guide, you'll have a precise UPS size for your build (interactive calculator below), the right backup tier for your typical outage length, and the SA brand picks that actually deliver clean power.

non-negotiable: Pure sine
typical UPS runtime: 15-45 min
cost range: R3,500-R25k

The SA load shedding reality

Load shedding remains a fact of SA gaming life in 2026 — even with improved grid stability, Eskom has not fully eliminated Stage 1-4 events, and municipalities like Tshwane, Johannesburg, eThekwini and Cape Town all rotate scheduled outages. The right backup setup makes the difference between losing a clutch ranked match and not noticing the lights went out.

Three outage durations dominate planning:

Stage 1-2: 2 hours
Stage 3-4: 2-4 hours
Stage 5-6: 4-8 hours

UPS vs Inverter vs Solar — three tiers

Solution	Best for	Cost in SA
Pure sine UPS 1500-2000VA	Stage 1-3 (under 2 hrs)	R3,500-R6,000
Inverter + 100Ah battery	Stage 3-4 (2-4 hrs)	R12,000-R18,000
Inverter + 200Ah battery	Stage 5-6 (4-8 hrs)	R20,000-R30,000
Hybrid solar + battery	Full off-grid PC use	R45,000-R85,000+
Petrol generator (NOT recommended)	Emergency only	R3,000-R12,000

Interactive UPS sizing calculator

Enter your typical loads. The calculator suggests a UPS size with safety headroom built in.

Why pure sine wave is non-negotiable

UPS units come in two waveform types. Pure sine wave matches the smooth AC waveform from the grid. Modified sine wave (often called "stepped square wave") is a cheaper approximation that looks like a staircase rather than a smooth wave.

For a gaming PC, the difference is dramatic:

Audible buzzing from the PSU and sometimes case fans on modified sine wave.
PSU shutdowns or trips during high load (the active-PFC PSU in modern systems can't synchronise with the stepped waveform).
Long-term capacitor damage in the PSU from the dirty waveform.
Possible data corruption on aggressive write workloads if the PSU momentarily glitches.

Pure sine UPS is the right call for any gaming PC, period. The R800-R1,500 premium over modified sine equivalents protects R20,000-R60,000 of PC hardware.

Don't forget the router (and ONT)

Your fibre ISP almost certainly stays online during load shedding — Vumatel, Openserve, MetroFibre and others run extensive battery + generator backup on their core networks. But your home equipment doesn't get that benefit.

What needs backup:

The ONT (fibre termination unit) — usually 10-15W.
Your router — usually 6-12W (Wi-Fi 6 routers) up to 20-25W (premium Wi-Fi 7).
Any switch or AP if you have wired infrastructure.

The right solution: a dedicated Mecer Mini-UPS (R1,200-R1,500) just for the network equipment. These purpose-built units provide 8-12 hours of router runtime — long enough to outlast any reasonable load shedding stage. Don't try to consolidate the network onto your gaming PC's UPS; the network UPS is meant for long runtime at low draw, your gaming UPS for high draw at short runtime.

Recommended SA picks

Use case	Pick	SA price
Budget gaming PC UPS (1500VA)	Mecer 1500VA Pure Sine ME-1500-WPTU	R3,400-R3,800
Mid-range gaming UPS (2000VA)	RCT 2000VA-PRO Pure Sine	R4,800-R5,500
Premium UPS (3000VA)	APC Smart-UPS SMT3000 Pure Sine	R12,000-R15,000
Router/ONT backup	Mecer Mini-UPS 12V Router Battery	R1,200-R1,500
Inverter+battery 100Ah	Mecer 1.2kW + 100Ah lithium battery	R12,000-R16,000
Inverter+battery 200Ah	Mustek 2.4kW + 200Ah lithium	R22,000-R28,000
Hybrid solar+battery	Sunsynk 5kW + 5kWh + 4× panels	R55,000-R85,000

In-game power-conservation tips

When you know you're on battery, a few in-game settings extend runtime dramatically:

Cap FPS at 60 via Nvidia Control Panel or AMD Adrenalin. Drops GPU power draw 30-50%.
Enable DLSS / FSR Performance mode — same visual quality, much lower GPU power.
Reduce monitor brightness — saves 15-25W on a 27" monitor.
Drop ray tracing. RT can add 80-150W to GPU power.
Disable RGB lighting on PC. 5-15W across case fans, RAM, GPU.
Switch to a power-save Windows plan. Reduces CPU clock floor and saves 20-40W at idle moments.

Combining these can extend a 30-minute UPS runtime to 50-60 minutes — sometimes enough to fully outlast a Stage 1-2 outage on a smaller battery.

Key takeaways

Pure sine wave UPS is non-negotiable. Modified sine units damage gaming PSUs and cause shutdowns.
Size at (real load × 1.5) for safety headroom. Use the calculator — don't trust PSU rated wattage.
1500-2000VA covers Stage 1-3. Stage 4-6 needs inverter+battery (R12,000-R25,000).
Don't forget the router — dedicated Mecer Mini-UPS for networking gives 8-12 hours.
In-game settings (FPS cap, DLSS, lower brightness, no RGB) extend battery runtime 50-80%.

Frequently asked questions

Can I really keep gaming through load shedding?
Yes with right backup. 1500-2000VA pure sine UPS gives 15-45 minutes for Stage 1-2. Stage 4 needs inverter+battery (R12,000-R25,000). Hybrid solar for full off-grid.
What size UPS do I need for my gaming PC?
PC + monitor + router wattage × 1.5 safety factor. Use the interactive calculator above. Typical gaming build (750W PSU, 60W monitor) = 1500VA UPS.
Pure sine wave vs modified sine wave UPS — does it matter?
Yes, hugely. Pure sine is mandatory for gaming PCs. Modified sine causes PSU buzzing, shutdowns and long-term damage. R1,000 price gap is well worth it.
How long will a UPS run my gaming PC?
1500VA/900W pure sine gives 15-30 minutes on typical mid-range gaming load. For 2+ hours, need inverter+battery setup.
UPS vs inverter — which is right for SA gaming?
UPS for short outages (under 30 min) with fast switchover. Inverter for long outages with bigger batteries. Hybrid: UPS for instant + inverter for runtime.
Will load shedding damage my gaming PC?
Yes — file system corruption from sudden cuts, surge damage on restoration. UPS with surge protection eliminates 90%+ of these risks.
What about the internet router during load shedding?
Fibre ISPs stay online. Your router/ONT need a dedicated Mecer Mini-UPS (R1,200) for 8-12 hours runtime. Don't combine with PC UPS.
Should I get a generator instead?
Generally no for gaming. Petrol generators produce dirty power that damages PSUs. Battery+inverter is cleaner and cheaper. Always run generator through UPS, never direct.