Estimated system power draw

363 W

during gaming · 30% safety margin included

Recommended PSU

Hiditec BZ PRO 750W

80 PLUS Bronze · Nichicon + Rubycon 105°C capacitors · 7-year warranty

System running at 48% of rated capacity · peak efficiency zone

Choose BZ PRO if...

• Your build uses RTX 5070 Ti or lower / RX 9070 XT or lower
• You prioritise internal quality over modularity
• You want the most premium capacitors (Nichicon + Rubycon) at the best price
• Your budget is tight (from €58.95)
• You don't need modular cabling for cable management
• You want the longest warranty: 7 years

Choose GDX V3 Gold if...

• Your build uses RTX 5080, RTX 5090 or RX 7900 XTX with a high-end CPU
• You need full modular cabling for your chassis
• You want the Gold certification (~4–5% more efficiency = ~€10/year)
• Your GPU has a 12V-2x6 connector and you want a native cable
• Your build exceeds 600W of real power draw
• You are building a high-end workstation or streaming setup

How many watts does a gaming PC need in 2026?

It depends on the GPU. A gaming build with an RX 9060 XT and Ryzen 5 draws around 280–330W. With an RTX 5070 Ti and Ryzen 7 9800X3D, around 430–490W. With an RTX 5080, around 500–560W. Add 30% headroom to get your minimum PSU size. The calculator above does this automatically.

Is a Gold PSU better than Bronze?

Not necessarily. Gold measures energy efficiency (~5% better than Bronze), which translates to roughly €8–10 less per year in electricity. If a Bronze unit has better internal capacitors than a Gold at the same price, the Bronze is the better buy. The BZ PRO 750W with Nichicon and Rubycon capacitors is a prime example of a Bronze that outperforms many Gold units on internal quality.

What PSU do I need for an RTX 5090?

The RTX 5090 has a 575W TDP. With a high-end CPU, the system can exceed 750W under real load. You need at least 1000W, ideally 1050W or 1200W. The GDX V3 1050W Gold (€129.90) or the GDX V3 1200W Gold (€139.90) are the right options with a native 12V-2x6 cable.

Does a higher-wattage PSU consume more electricity?

No. The PSU only delivers what the system demands. An 850W PSU powering a system that draws 350W will deliver 350W, not 850W. There can be a slight efficiency loss if the PSU operates well below 20% of its capacity, which is why oversizing too much is not recommended.

What happens if I use a PSU with fewer watts than needed?

Best case, the system reboots or shuts down during power spikes. Worst case, the PSU runs continuously at 90–100% of its capacity, degrades quickly, delivers unstable voltage that damages the GPU and CPU, and can cause cascading component failures.

What are Japanese capacitors and why do they matter?

They are the components that most determine PSU lifespan and current quality. Manufacturers like Nichicon and Rubycon (used in the BZ PRO range) have a rated lifespan of 5,000–10,000 hours at 105°C, versus 1,000–2,000 hours for generic capacitors. The direct difference: years of extra life and cleaner current for your GPU and CPU.

Do I need an ATX 3.1 PSU for an RTX 5080 or RTX 5090?

Highly recommended. The ATX 3.1 standard requires PSUs to handle spikes of up to 200% of their rated capacity for 100 microseconds. Without that support, the power spikes from RTX 50-series cards can cause system reboots even when the PSU has enough rated wattage. The entire BZ PRO and GDX V3 ranges from Hiditec comply with ATX 3.1.

How often should I replace my power supply?

A quality PSU with Japanese 105°C capacitors lasts 8–10 years. PSUs with generic 85°C capacitors start degrading in 3–5 years. Signs of aging include micro-stutters in games, spontaneous reboots and increased fan noise. If your PSU is more than 5 years old and you are upgrading your GPU or CPU, replace it first.