According to PSU tools: https://tools.pctalktalk.com/psu-suggestion/psu-for-amd-ryzen-7-9800x3d-and-nvidia-geforce-rtx-5070-ti/

Seems 650W is OK.

A 750W PSU is recommended.

Yeah, I totally agree that 750W-850W is the sweet spot for this setup. You dont really need to overspend on the most expensive 'premium' brands just to get stable power. Honestly, if you follow the community tier lists, you can find some really solid units that are way cheaper but still top-tier quality. Coming from a budget-conscious perspective, here are a few models that usually get high marks in reviews for value: - Thermaltake Toughpower GF1 - This thing is usually a lot cheaper than the Corsair RMx series but performs almost exactly the same in real-world usage. - Super Flower Leadex III Gold - People sleep on this brand but they actually manufacture units for some of the bigger names anyway... super reliable and often on sale.
- ADATA XPG Core Reactor - Tbh this is one of the best price-to-performance units out there if you can find it under $100. Basically, just check for 'Tier A' units on those community spreadsheets and grab whatever is on sale - saves you like $40 that you can put towards a better cooler or something... I think that's the smartest move for a 5070 Ti build.

Honestly, a quality 750W is sufficient if you're not overclocking. I'm running a similar setup with the CORSAIR RM750x and haven't had a single issue. The key is getting a high-quality unit from a reputable brand with good protections, not just throwing money at the highest wattage possible.

Did this last week, worked perfectly

MSI MAG A850GL. https://www.amazon.com/MSI-A850GL-Gaming-Power-Supply/dp/B0CB9MSJ5N?------123456890?7649-20&th=1

700-850W PSU are OK.

850W PSU is recommended.