I've been looking for reliable PSU calculator websites since the outervision one seems to be down (I just get a blank page, even when using a VPN). Previously, it worked well for me because I could verify results at my old job, but I can't do that anymore. I tried the bequiet calculator, but it's missing a lot of components, like Nvidia's 10 series GTX cards and even the newer Intel ARC A310. Then, I checked the Newegg tool, but it doesn't allow for multiple GPUs or add-on cards. Other calculators I've tried yield wildly different wattage estimates. For example, the same specs on MSI's and Seasonic's sites suggest I need over 1000W or under 600W!
So, I'm reaching out to see if there are any solid sites I might have missed or if anyone can vouch for the accuracy of either the MSI or Seasonic calculators. I'm particularly looking to downsize my build into a smaller case and want to know if a 650W PSU would suffice since I have an SFX 650W on hand, while my current setup is powered by a 1450W ATX PSU.
For reference, here's my setup:
- CPU: 5600x
- Motherboard: full ATX (ASUS ROG STRIX B550-F GAMING)
- GPU1: Intel Arc A310
- GPU2: Nvidia GeForce GTX 1050 ti
- Storage: 6x NVME, 3x SATA, and 3x 3.5" HDDs (can use up to 16 SATA drives)
- Expansion: PCIe 16x to 4x NVMe adapter, and a PCIe 1x to SATA HBA (16 ports), with a possible expansion card in the future.
Using average TDPs, I'm estimating around 500-600W for all components, but that's just a broad estimate. My system typically draws about 100W on average, but I want the PSU to be above the theoretical max.
1 Answer
I've always used PCPartPicker for my builds, and it seems to give reasonable estimates. In fact, I’m running a small form factor PC with an RTX 4070 Super and an i7K on a 650W PSU, and I have plenty of headroom for overclocking!
Are those estimates verified? I’ve only ever used PCPartPicker to check out others’ builds.