I recently built a new gaming PC with a Ryzen 7 7700X, MSI B650 motherboard, 32GB DDR5 RAM, RTX 4070 Super, and two NVMe drives, all housed in a case with great airflow. However, I made a questionable decision by going for a low-cost 650W bronze power supply from a brand I wasn't familiar with, thinking I could upgrade later. Ever since then, I've noticed some strange behaviors. Light gaming feels fine, but when I try more demanding games like Cyberpunk or run benchmarks, I sometimes experience quick black screens, fans ramping up momentarily, and even a full reboot when the GPU is under heavy load. There's also a high-pitched whine coming from the PSU area when things get intense. I've checked all connections and temperatures, and everything seems normal, but these issues only happen when the CPU and GPU are maxed out together. Should I stop using this setup until I replace the power supply, or am I just overthinking this? Could this cheap PSU damage my components if I keep using it? Would love to hear any similar experiences or advice!
6 Answers
Are you using the correct 12vhpwr cable directly from your PSU to your GPU, or are you using an adapter? If you are using an adapter, make sure it's set up correctly. Those old 6+2 connectors may not handle your build well.
It's not just about the wattage—quality and engineering matter a lot, too. A weak PSU can fail to deliver the right power when needed, which could mess up your components. Trust me, it's best not to compromise on power supplies. Just get one that you know is reliable.
You should seriously consider getting a new PSU before it damages your PC or even causes a fire. Don't wait until it's too late; that could be a disaster.
Check out the PSU tier list online with the model of your power supply. If it has a low rating, especially below a C, it's probably the issue. If it doesn’t appear at all, it’s likely a bad choice. Time to upgrade!
We've all been there! Cheaping out on a PSU is a lesson learned the hard way. Skimping on this part is rarely worth it. Investing in a high-quality one now will save you headaches in the future. You’ll never regret spending a little extra on a reliable power supply.
Yeah, it's pretty clear your power supply isn't cutting it. A poor-quality PSU can definitely lead to these kinds of blackouts and weird noises under load. Your setup sounds powerful, and it needs proper juice to run smoothly. I'd recommend switching it out for a better unit ASAP and stopping usage for now to avoid potential damage.
Totally agree! It's a long-term investment for your system.