I recently upgraded to a Gigabyte Gaming 5090 GPU and I'm wondering if I need to upgrade my power supply as well. I've got a Corsair RM1000x Gold, which I bought last year. I've seen people suggesting a 1200W power supply, but I really don't want to spend more if I can avoid it. My current setup is fairly efficient, especially with my AMD 7800 3dx that typically stays under 100W even when pushed. Here's what I'm running:
- Gigabyte Gaming OC 5090
- Gigabyte Aorus B650 AX motherboard
- AMD 7800 3dx
- Noctua NH-U12A Chromax 120mm CPU cooler (2 fans)
- 64GB Crucial DDR5 RAM
- Corsair RM1000x power supply
- Kingston 240GB 2.5in SSD for Windows
- Samsung 990 Pro 4TB M.2 SSD
- Samsung 870 Evo 2.5in SSD
- Western Digital 6TB HDD
- Total of 7 Noctua case fans (3 in front, 3 on top, 1 in the back)
- Fractal North case with minimal lighting, just the power LED and RGB on the GPU.
Also, is it okay to use the cables that came with the power supply for my 4080? They have 16 pins split into 2 different cables. Is there a new standard I should consider for the 5090? I would need to be looking for a Type 5 connector. Thanks for any advice!
2 Answers
You should be good with the RM1000x! If it has a good rating like 'Cybernetics A', that means it can actually deliver more than 1000W reliably. Just keep an eye on the temps, especially with the 5090's heat output. Power limiting it through MSI Afterburner is a solid strategy; you can typically set it to 95% without losing too much performance.
Yeah, that's right! Just make sure to monitor your temps and performance after adjusting.
A 1000W PSU is more than enough for your setup. You’re probably looking at a maximum draw around 845W when everything is under heavy load, so you have plenty of overhead with the RM1000x. Real-world usage will likely be even lower, so I wouldn’t stress too much about an upgrade.
Awesome! So just reduce the power limit in Afterburner? That sounds easy enough. Thanks for the tip!