Is the power source you selected sufficient for your setup?
Is the power source you selected sufficient for your setup?
I previously worked on building computers from 2010 to 2018 as part of my previous role, but now I focus on software development. I haven’t been updating myself as much as before. I’m only changing what’s relevant in this request. I’m checking if the PSU I chose is sufficient. Back then, an 850W was more than enough for high-end cards; however, I know the 4080 and 4090 models require a lot of power, so I went with the 4090. I’ll share my build details in plain text. I already have the case, fans, and just one SSD—just swapping the old ones into this setup.
PCPartPicker Part List:
https://pcpartpicker.com/list/LYKvqR
CPU: Intel Core i9-14900KF 3.2 GHz 24-Core Processor ($549.79 @ B&H)
CPU Cooler: Corsair iCUE H100i RGB ELITE 59.1 CFM Liquid CPU Cooler ($139.99 @ Amazon)
Motherboard: MSI PRO Z790-S WIFI ATX LGA1700 ($158.99 @ Newegg)
Memory: G.Skill Trident Z5 RGB 32 GB (2 x 16 GB) DDR5-6000 CL36 ($109.99 @ Newegg)
Storage: Samsung 980 Pro 1 TB M.2-2280 PCIe 4.0 X4 NVME SSD ($79.98 @ Amazon)
Video Card: MSI GAMING X TRIO GeForce RTX 4090 24 GB ($2019.98 @ Newegg)
Case: Corsair 4000D Airflow ATX Mid Tower ($104.99 @ Amazon)
Power Supply: Corsair RM850e (2023) 850W, 80+ Gold Certified, Fully Modular ATX ($119.99 @ Newegg)
Total: $3283.70
Prices include shipping, taxes, and available discounts
The 850w PSU should suffice. I’d still consider getting a 1000w unit due to the potential spikes from the 4090. I’ve used a 3080 with a 500w BIOS and a Seasonic 850w Prime Titanium PSU, but my AMD system has a max CPU of around 140w. The 14700kf can handle 300w on its own, so pairing a 4090 with an Intel 14700k or 14900k and an 850w PSU wouldn’t be necessary.
I wouldn't match a 4090 with anything below 1KW, it won't work out well. Particularly because NVIDIA is still dealing with issues with burnt end connectors (JayZTwoCents recently covered this). A 4090 consumes a lot of power, so you need a very strong supply. Options like the Corsair RM1000X, Seasonic Prime, or MSI MPG would be suitable. But for that card, make sure it's at least 1KW. Also, verify if the cable you buy is compatible with NVIDIA.
Thanks for the updates. I changed the PSU to a 1000W model, which is pretty wild given how much power modern cards consume.