Hey everyone! I’m currently in the middle of picking out parts for a high-end gaming build centered around the RTX 4080 Super, and I’ve hit a bit of a wall choosing the right power supply. I’ve decided that 850W is the sweet spot for my needs, but there are so many different models on the market that I’m starting to feel a little overwhelmed.
Since the 4080 Super is such a significant investment, I really want to make sure I’m getting something reliable and high-quality. I’m specifically looking for a unit that is ATX 3.0 and PCIe 5.0 compliant because I’d really like to avoid using those clunky power adapters and just use a native 12VHPWR cable. Noise is also a big concern for me—I’m hoping to find a PSU that stays quiet or has a zero-RPM fan mode when I'm just browsing the web.
I’ve been eyeing the Corsair RM850x and the Seasonic Vertex series, but I’m curious if anyone has hands-on experience with these or if there’s a "gold standard" I’m overlooking. For those of you running a 4080 Super, which 850W PSU have you found to be the most stable and easiest for cable management?
> specifically looking for a unit that is ATX 3.0 and PCIe 5.0 compliant because I’d really like to avoid using those clunky power adapters
So yeah, ATX 3.0 units are built to handle those massive power spikes 40-series cards hit, basically ensuring ur system wont crash! For a smart, cost-conscious choice, I highkey recommend the MSI MPG A850G PCIE5 850W 80 Plus Gold Full Modular Power Supply. It's actually amazing value, super reliable, and has the native 12VHPWR cable you need!! gl!
honestly, in my experience, the Seasonic Vertex GX-850, 850W 80+ Gold, ATX 3.0 is the gold standard. it's silent, has native cables, and basically bulletproof... i've used 'em for years and they're solid.
TL;DR: The be quiet! Pure Power 12 M 850W, ATX 3.0, 80 Plus Gold, Modular Power Supply is a safer bet for silence.
Respectfully, I'd consider another option. While Seasonic is great, be quiet! units are literally designed for low noise. Make sure to check the Cybenetics database for technical acoustics tho. Just a warning: always double-check that native 12VHPWR connection is fully seated so ur 4080 Super doesn't have issues. Cheers!
> I’m specifically looking for a unit that is ATX 3.0 and PCIe 5.0 compliant because I’d really like to avoid using those clunky power adapters
WATCH OUT for the actual quality of the 12VHPWR connector terminals because even on 850W units that are technically compliant, some brands use cheaper pins that can actually melt if they aren't seated 100% perfectly!! It's a massive safety risk with a 4080 Super because it pulls so much juice during power spikes, so yeah, safety first honestly.
I'm still learning the deep technical specs myself, but basically, you want a brand that uses high-quality 16AWG wiring for that native cable to handle the heat. I've heard the big names like Corsair or maybe MSI are the way to go since they've been pretty transparent about their cable revisions lately. Definitely check the Cybenetics database for noise levels too, cuz it's way more accurate than the standard 80 Plus ratings... it'll tell you exactly how loud the fan gets at different loads. If the cable feels too stiff, don't force it too hard or u might damage the pins. Just make sure it clicks in!! anyway, hope that helps!
been reading through the suggestions here and honestly, as someone who has been building since the early 2000s, i just wanted to drop a bit of caution. it is easy to get caught up in the specs, but after years of running high-end rigs, the thing that usually bites you isnt the brand choice—its the installation and long-term maintenance. i had a scare recently where i was so focused on having a tidy build that i zipped my cables way too tight. with these new high-power connectors, if you put too much stress on the wire right where it meets the plug to get that perfect look, you can actually cause a bad connection over time. i started noticing some weird flickers and realized the cable had pulled slightly lopsided because of the tension. my advice after living with these setups long-term is to prioritize a gentle cable curve over aesthetics. dont try to force a tiny case to look perfect if it means tugging on that connector. also, i make it a habit to check the physical connection every few months during a dust cleaning. better to be paranoid than have a melted port on a card that expensive, ngl...
> I’m specifically looking for a unit that is ATX 3.0 and PCIe 5.0 compliant because I’d really like to avoid using those clunky power adapters So ngl, I’ve been building my own PCs for a long time, but I still felt like a total beginner when I first looked at the new 12VHPWR stuff. I was really nervous about doing the install myself instead of just paying a pro to handle it. I ended up getting the Corsair RM850e (2023) Fully Modular Low-Noise ATX Power Supply for my 4080 Super setup. Tbh, it made the DIY process way less scary than I expected. The native cable is so much easier to manage than those old splitters, though I did find the cables a bit stiff to bend. If you're doing the work yourself, maybe check out the Thermaltake Toughpower GF3 850W Gold - TT Premium Edition too? I've heard some people say the cables are a bit more flexible for tight spaces. Honestly, as long as you make sure it's clicked in all the way, you'll be fine. Is it just me or does everyone get that "first boot" anxiety with these new high-power cards? lol.
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