I'm trying to figure out the actual wattage of my generic power supply. I replaced my former 250W unit with this one, but since then, I've been dealing with issues like video disconnections while playing games like Fortnite. The power supply doesn't provide much information on the 12V output, it doesn't mention any wattage. Here are my components: i7 3770, R7 450 4GB, 8GB RAM, 1 SSD, and 2 HDDs (2.5" 7200rpm). I've attached a picture of the power supply for reference.
4 Answers
Don't forget the basic formula: Watts = Volts x Amps. The two rails at 12V give you 96W and 168W, totaling around 264W if everything is used wisely. Just keep in mind, using a no-name power supply for any serious gaming might not be the best option due to reliability issues.
You're right to be concerned! Assuming the numbers are legitimate, this power supply would only provide about 260 watts, which likely isn't enough for your setup, especially under load. Those video disconnections while gaming could definitely be linked to power issues. And running other appliances like an AC can just exacerbate the problem, leading to drops in power.
Just a heads up, the advertised wattage on a power supply is what it theoretically can deliver to your PC, not what it actually draws from the wall. To accurately test the output, you’d typically need specialized equipment that can cost quite a bit.
To calculate the real wattage of your power supply, focus on the 12V rails. It seems there are two 12V rails: one at 8A and the other at 14A. Multiply those values—8A x 12V gives you 96 watts, and 14A x 12V gives you 168 watts. So, you’re looking at about 264 watts total if everything’s balanced. But I'd be cautious with this brand because quality can be hit or miss.
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