Generic PSU doubt

Esteban Winkler · Apr 22, 2014

Hi all, this system would run fine with a GENERIC 800W PSU?

CPU: i5 3330
GPU: GTX 570 OC
HDD: WD Blue 1TB
RAM: 4GB HyperX

I'm scared about the GTX 570 when it's at full load.
Thanks!

jnkweaver · Apr 22, 2014

The GTX 570 suggest a 550W supply for the whole system. Generic supplies are unreliable and often inflated on their wattage. What is the amperage rating for the 12V rail or rails if it has multiple listings?

ko888 · Apr 22, 2014

For a system using a single GeForce GTX 570 graphics card NVIDIA specifies a minimum of a 550 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

Overclocking of the CPU and/or GPU(s) may require an additional increase to the maximum combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock being attempted.

Even a generic 800W PSU would have some unknown brand name and model number on its label. The number and types of PCI Express supplementary power connectors may give you a clue as to whether or not the PSU's maximum combined +12 Volt continuous current capacity is sufficient.

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