I'm trying to figure out if my 650W Corsair CX650M power supply is sufficient for an NVIDIA RTX 4070. Nvidia indicates that 650W is adequate, and PSU calculators also suggest around 630W as a minimum requirement. My PSU is nearly new, having been used for just three months. Here's my planned setup: a Gigabyte Windforce 2x GeForce RTX 4070, a Ryzen 5 5800x with undervolting and performance boost tweaks, an ID Cooling A620 Pro SE with 260W, an MSI B450 Gaming Plus motherboard, 32GB of G.Skill TridentZ RGB at 3200MHz, a Samsung NVMe PM991A 1TB SSD, and a Kingston SSD A400 960GB. Will my 80+ Bronze PSU be sustainable for this setup?
4 Answers
You should be fine with that setup! The 650W is enough and you have a bit of headroom too. Don't stress about it!
It should definitely work with some margin for safety. Consider keeping an eye on your power usage if you plan to overclock, but otherwise, it looks solid!
The CX650M has a decent reputation in terms of performance—it's rated C+ to B on PSU tier lists, which should be okay for your gear. Just ensure your cooling is up to par!
Honestly, nothing to worry about. Your components don't draw excessively compared to what the PSU can handle, so you're good!
So, I really don’t have to stress about it? That’s a relief!