I've been looking into building my PC and noticed that NVIDIA recommends an 850W PSU for the RTX 5080, even though, according to PC Part Picker, my setup would run fine with a 750W PSU since I have around 200W of headroom. I'm curious why the recommendation is so much higher. I'm also planning to use a specific connector with my Corsair SF750 (2018) 750W 80+ Platinum PSU. Is it safe to go with my current PSU? Here's a breakdown of my estimated wattage for the components:
- AMD Ryzen 7 5800X: 13W - 105W
- Noctua NH-U9S CPU Cooler: 5W - 10W
- Gigabyte B550I AORUS PRO AX Motherboard: 7W - 30W
- Corsair Vengeance LPX 32 GB RAM: 29W
- ADATA XPG SX8200 Pro 2 TB SSD: 2W - 10W
- WD Blue SN550 1 TB SSD: 2W - 10W
- NVIDIA RTX 5080: 90W - 360W
- **Total Estimated Wattage:** 554W
5 Answers
NVIDIA lists 850W as a safe figure, especially when high-powered CPUs are considered. Your SF750 should be okay, but if you plan to add more components later, keeping your PSU capacity high is always a good idea!
NVIDIA recommends 850W for the 5080 because this GPU can have really high wattage spikes, and they play it safe since they don't know what other components you're using. With a high-quality 750W PSU like yours, you might be fine, but running some benchmarks while monitoring wattage could help you feel more secure about it!
Thanks for the tip! I'll definitely monitor it when I get everything set up.
Honestly, if you're in the position to buy a 5080, consider going for a higher watt PSU—like a 1000W. It gives you more headroom to handle spikes and future upgrades. I'd do it if I were you!
That's a solid point, but I prefer to stick with what I’ve got for now since it’s still working well.
Your SF750 should hold up perfectly fine, especially since it's a well-rated PSU. The recommendations might seem high, but they account for varying system configurations and quality concerns. Just be sure the connector you’re using matches your PSU's specifications!
I checked and that connector is compatible, so I'm good there!
It's true that even if you're within limits, having a PSU that supports native 12vhpwr or 12v2x6 standards is key for the power-hungry 5080. That GPU can spike well above the average wattage, pushing your system to its limits—especially if paired with a less powerful CPU like the Ryzen 7. If you go for the 5080, investing in a solid PSU is worth it!
Yeah, I'd say if you're already spending on the 5080, just get the right PSU to avoid future headaches!
That's good to know. I'll keep it in mind for any future upgrades!