02/02/2026 6:45 am
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Hey everyone! I finally managed to snag an RTX 4070 Super for my new build, but I’m a bit stuck on picking the right power supply. I’ve been researching for a few days, and while I know the 4070 Super isn't a total power hog compared to the 4080 or 4090, I want to make sure I get something reliable that won't fry my components or cause random shutdowns under load.
My current budget for the PSU is strictly under $120. I’m really trying to maximize value here without cutting corners on quality. Ideally, I’m looking for something that is 80+ Gold certified and fully modular because I’m building in a compact mid-tower case (the Corsair 4000D) and I really don't want to deal with a 'cable octopus' mess in the basement.
I’ve been eyeing a few options like the Corsair RM750e or maybe something from the Seasonic Focus line, but I've heard mixed things about coil whine on some newer budget-friendly units. Since the 4070 Super uses that 16-pin 12VHPWR connector, I’m also wondering if it’s worth specifically looking for an ATX 3.0 compatible PSU to avoid using the adapter, or if staying with an older, high-quality unit and using the included NVIDIA dongle is perfectly fine at this price point.
For context, I’ll be pairing the GPU with a Ryzen 7 7700X, two NVMe drives, and a standard AIO cooler, so I think 750W should be the sweet spot for efficiency and future headroom. However, I’m open to 650W if it’s a top-tier unit, or 850W if there's a crazy deal I missed.
What do you guys think is the absolute best 'bang for your buck' PSU currently on the market that fits under that $120 ceiling? Any specific models you’ve had great experiences with lately?
6 Answers
20
02/02/2026 6:45 am
yo, congrats on the new gpu!! honestly, i feel u on the power supply struggle. for your situation, i reallyyy recommend getting an ATX 3.0 unit cuz i had a bad experience with those messy adapters. i tried using the dongle with an older psu and it was basically a cable nightmare in my case, plus i was lowkey terrified of it melting lol.
- i'd go with the Corsair RM750e (2023) Fully Modular Low-Noise ATX 3.0 PSU. it's usually under $100 and has the native 12VHPWR cable you need for that 4070 super.
- also, keep an eye on the MSI MPG A750G PCIE5 750W 80+ Gold Fully Modular PSU - i've seen it on sale for like $110. it's super reliable and way easier to manage than the 'cable octopus' you're worried about.
tbh, dont overthink the 850W thing... 750W is plenty for a 7700X combo. hope that helps ur build go smooth! 👍
19
02/02/2026 7:45 am
Been using this for years, no complaints
17
02/02/2026 7:45 am
> Since the 4070 Super uses that 16-pin 12VHPWR connector, I’m also wondering if it’s worth specifically looking for an ATX 3.0 compatible PSU
Honestly, going ATX 3.0 is a MUST for safety and cable management! Using adapters can lead to poor connections if theyre not seated perfectly, which is a HUGE fire risk. For ur budget, I HIGHLY recommend the MSI MAG A750GL PCIE5 750W 80+ Gold Fully Modular ATX 3.0. It's usually under $100, has the native 16-pin cable, and it's super reliable for a 4070 Super build. It fits perfectly in the 4000D too! gl with the build!!
10
02/02/2026 6:55 am
In my experience:
- Go with a gold Corsair or Seasonic
- Get the one with the new cable... basically makes it sooo much easier
Mine works well and i'm really satisfied!!
5
26/02/2026 4:26 pm
Ive been looking at the data sheets and if you really want to maximize the component quality for under $120, you should check out the Thermaltake Toughpower GF3 750W 80+ Gold Fully Modular ATX 3.0. Its built on a really solid CWT platform with Japanese capacitors and handles transient spikes like a champ. Its usually sitting right around $100 and fits your budget perfectly. Another great DIY choice is the Montech Titan Gold 750W 80+ Gold Fully Modular ATX 3.0. Dont let the brand name fool you, it is actually an A-tier unit with excellent ripple suppression and it stays super quiet even when the 4070 Super is pulling full load. Since youre using a 4000D, having that native 12VHPWR cable is basically mandatory imo... those NVIDIA adapters are way too stiff and make it a pain to close the side glass without putting stress on the connector. Stick to an ATX 3.0 unit for sure so you get the better power excursion handling that the new spec requires.
1
17/02/2026 12:46 pm
Facts.
