I'm considering getting an RX 5700 XT and I'm wondering if my power supply will be enough. I have a Csonic 500W power supply, which provides 408W on the 12V line. I'm planning to set the power limit to 80-85% and undervolt it using MSI Afterburner. My CPU is a Ryzen 5 3600, also undervolted, and I plan to cap the fps at 66 while gaming at 1080p. Will this setup work, or should I look for something else? I just bought my PC and haven't purchased the GPU yet, so I'm hoping to keep costs low!
3 Answers
Yeah, a 500W PSU should be enough for your setup! I've run a similar GPU with a 450W PSU without any issues. Just keep an eye on power consumption; tools like PCPartPicker can help you get a rough estimate. They often overestimate the power needed just to be safe, so don’t stress too much if your calculations are lower than what they recommend.
Just a heads up, your power supply is over 15 years old! While it might have worked fine back in the day, I wouldn't fully trust it with a powerful GPU like the RX 5700 XT. You might want to consider getting a newer model. A reliable 500W PSU from this era would definitely handle your Ryzen and 5700 XT, just make sure it has the right connectors.
I appreciate the advice! I’ll look into getting a newer PSU.
To really figure it out, have you tried using one of those PSU calculators online? Input your whole build and see what wattage it suggests. It gave me a rough estimate of about 370W for my rig, which was pretty spot on.

Thanks! That eases my mind a bit.