I've been considering upgrading my graphics card from a 3070 Ti to a 5070 Ti, and I wanted to check if I need to upgrade my power supply as well. PCPartPicker is estimating I'd need around 519 watts, but other PSU calculators vary between 490-699 watts. Right now, I have a 650W power supply that I've been using since mid-2018. I'm not into overclocking and usually play less demanding games, but I do spend quite a bit of time on 3D art and rendering. Here's a rundown of my current parts:
- **CPU**: AMD Ryzen 5 5600X 3.7 GHz 6-Core
- **CPU Cooler**: ARCTIC Liquid Freezer II 240
- **Motherboard**: Asus Prime X470-Pro
- **Memory**: Corsair Vengeance LPX 32 GB DDR4-3600
- **Storage**: Samsung 970 Evo Plus 1 TB NVMe SSD, Samsung 870 Evo 1 TB SSD, Seagate BarraCuda 2 TB HDD
- **Video Card**: Asus PRIME GeForce RTX 5070 Ti 16 GB
- **Case**: Corsair 4000D Airflow
- **Power Supply**: SeaSonic FOCUS Plus 650 Gold 650 W
5 Answers
Honestly, I would worry more about CPU bottlenecks than the PSU itself. If you're concerned about stability, go for a reliable PSU that's higher than you think you'll need. That way, it can handle potential upgrades down the road like a new CPU or RAM.
I recently upgraded to a 5070 Ti, and my setup had a supposed '750 watt' PSU, but it wasn't enough. I ended up swapping in an 850W Corsair unit, and it works great now. You might want to consider getting a bigger PSU just to be safe, especially if you're planning on keeping this build for a while. Good luck!
Check out this table from Asus, it shows the minimum recommended power for non-overclocked builds. It can help you decide if you're on the right track with 650W or if you should think about upgrading.
I’d just switch to an 850W power supply with native 12V connectors. That should ease any concerns you have about power requirements.
I think 650W should be fine for your setup since you're using a high-quality unit. The 5070 Ti won’t draw extreme power, especially with your Ryzen 5600X, which is pretty efficient. Nvidia tends to overestimate PSU needs for safety so I wouldn’t rush into an upgrade unless you want to future-proof your build.
I totally get that! I did my homework too, and opinions on needed wattage vary so much. I can definitely understand not wanting to deal with swapping the PSU again if you've just upgraded your case.