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Iam using MSI MAG A650BN with 80plus Bronze maybe you could purchase 750 one hehe, 750 one with better 120W combined both +3.3V(20A) with +5V(20A). No problem what so ever from last year till now
Did you live near Micro Center? They could give you some PSUs meet your RTX 3060 requirement. Or other places like in this thread/topic/post below.
https://steamcommunity.com/discussions/forum/11/882960080249778126/
That can depend on what CPU you have.
For a 120-150 W TDP CPU and up to RTX 3080 Ti (350W TDP GPU) you would really only need around Gold/Platinum 650W PSU.
The reason most should just go with 750W or 850W is for a more power hungry CPU and/or GPU later down the road; not to mention these are usually the minimum PSU to go with should you ever need up to 2x 4+4pin EPS connections (for Motherboard) and up to 4x 6+2pin GPU connectors.
Also, ZOTAC has RTX 3070 (on Amazon) for around $296 or so; which is nearly same price as most 3060 Ti
Does it really matter? If you are not sticking to a strict budget, the power supply unit is arguably the second most future proof part of your build, after the case.
The cheapest 650 watt bronze power supply I can find is $50 from G. Skill.[www.microcenter.com]
750 watt from M.S.I. costs more like $70[us-store.msi.com]. Maybe $75 if you absolutely insist on Corsair[www.amazon.com] (and for reference, a corsair 650 watt P.S.U. is $60[www.amazon.com]).
$15-25 is not a particularly large expense to spend on future proofing the component against more power hungry components you might want to buy in the future.
An overspecced power supply can deliver less wattage to more efficient components. An underspecced power supply can't deliver more wattage to more demanding components.
Might even be worth more to get one that's Atx 3.0 or 3.1 compliant with a 12vpwr connector.
https://pcpartpicker.com/product/YRJp99/corsair-rm750e-2023-750-w-80-gold-certified-fully-modular-atx-power-supply-cp-9020262-na
As for PSU, a good quality Gold rated PSU from Corsair/Seasonic/Be Quiet!/Enermax/etc would suffice. I'm a believer of having overpowered PSU, like IF the recommended PSU for my setup is a 850W PSU, I'd get a 1000W PSU at the minimum.
First, look for power supplies with Gold, Gold+, Platinum certifications. They have better quality electronics, better capacitors, etc. ... last longer to withstand higher loads.
Secondly, it is better to buy a slightly more powerful power supply, so that it does not work at the limit of its capabilities.
Take a piece of paper and a pen.... and count how much maximum current the motherboard, ram, processor, drives and other devices draw. Also add what you connect to usb. Now add up all the maximum values, add 15 - 20% and you will have, yes almost perfectly calculated power supply power. Remember, count the maximum values. Finally, buy some cheap UPS to stabilize the current from the outlet.
Previously I had for Ryzen 5950X + AMD RX580 -> next: Radeon 7900 XTX = Corsair RM850W. It coped, but I was a little concerned that it was working at the limit of performance. Now I have R 7950X3D + 7900XTX = Asus Rog strix 1200W .... and now I am calm.
The problem is that even if you have a power supply under warranty you never know what else it can damage in your PC .... maybe the ram - completely or partially, the processor, the board ??? It's always a lottery. On the PSU it is better not to save money.
Consider many hours of PC operation under maximum load and count the Watts. The numbers don't lie.
There's a tendency for gold rated supplies to use better components because that's the usual way you'd increase the efficiency of a product, but it's pretty far from a guarantee. Those exploding gigabyte power supplies were gold rated, and had a failure rate of 50%[www.tomshardware.com]. It's not the certification's fault. It's only meant to test for one thing.
That's why many people would advise buying from the known trusted brands of power supply manufacturer like Be Quiet, Corsair, E.V.G.A., F.S.P., Seasonic and Super Flower.
That's also not a surefire thing though. You have to keep in mind that many brands are just effectively labels slapped onto power supplies made by O.E.M. companies. Seasonic and Superflower have been known to make power supplies for other brands. Channel Well Technologies (C.W.T.) does O.E.M. work too, Odds are if you're buying a corsair power supply that it was made by C.W.T. C.W.T. also apparently makes all of the M.S.I. power supplies, and some of the thermaltake ones. There's also a company named Delta that does O.E.M.work. I haven't really delved much into the rabbit hole of who really makes what power supply though. Thing is, the front facing brand name companies can switch O.E.M. companies. I know Superflower and Seasonic make their own though.
It is not easy to buy a power supply. I will not agree that better components are the way to increase performance. For example, some power supplies have Japanese Nichicon capacitors, others have Elny, Kemet, etc. Prices from the same capacitor range from $0.50 - $5. In addition to these, there are inductors, diodes, resistors, transistors, etc. If you have repaired egz. audio you would know that the differences in quality are HUGE. Basically everything depends on the quality.
Of course, you don't have to be familiar with it and it's absolutely ok.
As for Gigabytes, I've also read about it, but I haven't bought it, so it's hard for me to judge. People write different things, sometimes exaggerated or pissed off about something ... and it is worth taking into account.
Recently I also had a big problem with the choice of power supply. I changed my hardware to a more powerful one, and before that I had a Corsair 850x RM - 70 Amps on the 12V line and 25 Amps each on 3.5 and 5V. I always look at the load on the power supply line. The higher, the more robust the power supply.
Now Corsair power supplies do not even have basic information, there are no labels with information. You just have to believe that they are good and everything is ok. I don't know why they did that. I had a real dilemma. As a rule, the price corresponds to the quality - that was the case until now.
In addition, there are a lot of power supplies on the market after consumer returns and warranty repairs.
I was guided by the brand name and good service. The basic rule, is to check the weight of the power supply. The heavier, the better. I know, sounds ridiculous, but believe it always works.
I agree that the rabbit hole, and many more additional traps along the way. What is certain is that, as a rule, it is worth buying new. Admittedly, I myself have several used, but proven and in super condition .... and I will never sell them. When electronics break down it's always, also something else along the way, in whole or in part.
I own the 550w version of the same PSU in my Little brothers PC hooked to a GTX1660. Had that one since 2019, works like a charm still.
110 bucks Pretty damn good deal for a Decent Budget PSU [www.amazon.com]
as for what wattage.....i myself have always gone with a larger then needed PSU as its helped down the road....case in point....I had a 1070 when i started my current rig and only needed a 550watt PSU for my whole system when i built it using the old 1070......i got a 750 watt PSU just for fun of it at the time and then when i was given a FREE 3080 10gb by a friend going to a 4090, i did not have to upgrade anything to drop in the new card.....
as others have said the power supply is something that you can keep for a DECADE if its the right one......my mom is using my 600 watt PSU from 2011 if it gives you a clue......it was in a server for 6 years on none stop.....