I'm looking to upgrade my sister's PC using some leftover parts from my brother's recent upgrade. She's currently running an older Intel i5 3570k setup with a 2012 OCZ PSU (550W), DDR3 RAM, and an ASUS P8Z77-V LE motherboard. She's not into heavy gaming—just plays games like Roblox and The Sims—but I'm considering swapping in an AM4 setup with a Ryzen 3600x, DDR4 RAM, and an MSI B450 Tomahawk Max that are available. My main concern is whether her old PSU can handle the new Ryzen components, given that it's quite old and has been stable so far, but I'm unsure about its compatibility and performance with these newer parts.
3 Answers
Honestly, given how old that PSU is, I'd recommend getting a new one altogether. Good power supplies come with long warranties, often 10 years, and 2012 is pretty dated. With the new AM4 setup, you're looking at a max usage of around 300-400 watts. You might want to hit up PCPartPicker to double-check. Also, I trust brands like Be Quiet or even Corsair, like the CX 550W, for a solid upgrade. It's worth the investment!
The Ryzen 5 3600 paired with a GTX 1060 is actually going to be more power efficient than her current setup with the i5 and GTX 970. I wouldn't worry too much about power wattage with this new configuration. However, you should definitely check if her PSU has safety features like over-current and over-temperature protection. If it doesn’t, I’d suggest looking to upgrade the PSU too just to be safe.
Yeah, I think it's one of the basic OCZ models—I'll have to check it out for those features before moving forward.
This upgrade is definitely a step up! The Ryzen 5 3600X, GTX 1060, and moving to DDR4 RAM will really help her with modern software and gaming. It sounds like you’re transitioning her to a much more capable rig, just be aware of that PSU—if it's good quality, it might last, but it's also wise to consider future-proofing with something new!

I’ve heard good things about Be Quiet! Corsair CX 550W is a great option too, especially at that price—it sounds like a plan!