Power Supplies in Lebanon.

What wattage do you need?

Add up what your processor and graphics card draw under load, then leave headroom for peaks and the rest of the system. As a rough guide:

• 500 to 650 W: office PCs and builds with an entry graphics card.
• 750 to 850 W: most gaming PCs with an RTX 5060 Ti, RTX 5070 or RX 9070 XT class card.
• 1000 W and up: RTX 5080 class cards with high-end processors, or room for future upgrades.

Each graphics card listing shows the maker's recommended wattage, and the builder warns when headroom is thin.

Efficiency ratings

80 PLUS Bronze, Gold and Platinum describe how much power a unit wastes as heat. Gold is the common sweet spot for gaming builds; Platinum runs cooler and quieter under load. Higher efficiency also means less heat inside the case.

ATX 3.1 and the 16-pin connector

Many new NVIDIA graphics cards use a 16-pin 12V-2x6 power plug. Power supplies such as the NZXT C750, C850 and C1200, the Thermaltake Toughpower GF3 and PF3, and the Cooler Master MWE Gold models list that cable natively, so no adapter is needed. Older-style cards use 8-pin PCIe cables; the builder counts them for you.

Modular, semi-modular or fixed

Fully modular units let you connect only the cables you need, which makes cable management cleaner, especially in compact cases. Fixed-cable units cost less but leave spare cables to tidy.

Size: ATX or SFX

Most cases take a standard ATX power supply, but length varies. Small-form-factor cases may need an SFX unit, such as the Thermalright TR-SGFX, TR-TGFX or TR-TPFX series. The builder compares PSU length with your case's limit.

Signs your power supply is too small

Random restarts or shutdowns when a game starts, or when the graphics card is under full load, often point to a power supply without enough headroom or the wrong cables. When you upgrade to a more powerful graphics card, check the new card's recommended wattage and connectors before you buy; the builder compares them with your power supply.

Power cuts and backup

A power supply is not a backup. To keep your PC running through cuts, see UPS and power backup.

Browse by brand: Thermalright, Thermaltake, Cooler Master, Lian Li, NZXT, Gigabyte, Aerocool and DeepCool. Pair with graphics cards and PC cases, see all PC components, or build your PC with free assembly and testing.