Adata XPG CORE REACTOR CREACTOR650G-BKCGB 650W is a modular, 80 Plus Gold power supply unit equipped with 100% Japanese capacitors

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You can see in the 10% load scenario that the power supply behaves very well with just 2A on 12v and typical values on 5v and 3.3v I have already bought a Cyberpower 2200 UPS and calculated PSU power @ extreme.outervision.com, which recommends me a 688w psu, I am leaning more towards a 750w though. Ofc you are free to do your own calculations. Infineon IPA60R190P6 (600V, 12.7A @ 100°C, Rds(on): 0.190Ohm) &1xSPN5003FET (for reduced no-load consumption) The Core Reactor 850 is fully modular, and XPG mentions that only high-quality parts are used inside, including Japanese capacitors and a fluid dynamic bearing fan. Moreover, it has enough connectors to power a truly high-end system, although I would advice against fully utilizing all available EPS and both PCIe cables featuring two PCIe connectors each at the same time.

The total output power is 650W, each voltage load is 5V20A/ +3.3V 20A/+12V 54.1A/ -12V 0.3A/+5V VSB 3A. This combination is sufficient for general mid-range and high-end gaming computers with a single graphics card. The XPG CORE REACTOR is a modular, 80 Plus Gold power supply unit equipped with 100% Japanese capacitors. Combined with Line Level Control (LLC) resonant topology, it is power-efficient, reliable and makes creating a tidy build easy.

Yeah, the conclusion does say "Fan becomes noisy at full speed", but that full speed would only be used when your components take close to 700-800w, and his configuration won't get close to 500w so problem solved, fan won't be noisy. At 140mm long, the CyberCore is relatively of standard size. This size applies for all capacity so sizing is uniform across the different wattages so you should be able to compare with photos on the web if you need to measure for your build. Again, please allow for some bend space as the modular plugs do take up space. Is this what you mean by Gold label on the Antec Neo Eco? https://www.antec.com/product/power/neg650-modular

The crossload tests are NOT realistic and are not supposed to fault a power supply, a power supply is not expected to be perfect with crossloads... there's barely any computer out there which consumes a ton of power on 5v and 3.3v and little on 12v, or the other way around .. all power on 12v and nothing on the other voltages. After testing with different loads, I thought it is better to give a real perspective that an ordinary consumer should have in mind before buying a PSU. Because he or she won’t go through a long list of numbers of the test results unless and until the person is highly a geek. Moreover, it is not practical for a general gamer or user to get all professional equipment to test various voltage and current factors to buy just a single Power supply unit. Therefore, let’s talk about the real things which one should see before buying a PSU unit for an expensive Motherboard and GPUs of a PC.

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The use of a cutting-edge PFC circuit in combination with a fully digital platform seems to be the key for record-setting performance. Besides its super efficiency, the AX1600i also offers great load regulation, amazing transient response, a long hold-up time, and unparalleled ripple suppression. Moreover, the great benchmark results are accompanied by quiet operation, enabled by a relaxed fan profile and a high-quality FDB fan. Using the Corsair Link software, you're able to choose between three fan modes: performance, balanced, and quiet. Seasonic is a brand that is synonymous with high-quality PSUs, and the Focus GX-650 is no exception. It is an 80 Plus Gold certified PSU that delivers up to 90% efficiency under full load. The Focus GX-650 has a fully modular design, which means you can connect only the cables you need, reducing cable clutter and improving airflow inside the case. It comes with a ten-year warranty, which shows that Seasonic is confident in the quality of its product. In summary I can look at crossload tests and I can firmly say that it's a STUPID thing to be commenting about. Here is the PSU in various loading conditions which includes a 12900, RTX 4090 and RTX 3090 all loaded. The PassMark Inline power tester only capture 1 PCIe pair but the system is drawing around 900W. I was hoping to get another RTX 3080 Ti in the mix but we don’t have another slot available. Under lighter loads, the fans on the CyberCore remain fairly quiet. This ramps up to hum at 900W+ of load which is a win for both XPG and their Nidec partnership, proving that its not just a pure PR move. The main PSU unit gets fairly warm at higher loads but barely goes above case ambient with anything lower than 400W XPG Core Reactor 850 Gold Maybe someone has had experience with this? Is it worth the money? Is there better option in this price point with fully modular cables and as much of W as possible?

NOBODY's gonna have 12A on 5v and on 3.3v at the same time these days. One may have 12A on 5v with 10-15 mechanical drives, maybe if he/she builds a NAS system, or something like that. Of course, as compared to 750 CRG, it has less interface because of less power and to reduce the cost. Here's a 850w psu, which does 90% efficiency at 40% or higher load, and it's double forward topology : https://www.techpowerup.com/review/lepa-g850-mas/5.html I don't know enough about Silverstone Viva to say an opinion about it and I don't have time to research it. It's a budget/mainstream series either way, nothing special. From pictures, it doesn't look like Sirtec/HighPower design and heatsinks are more like on Andyson units.The OG one, just Antec Neo Eco Gold - essentially a rebrand of Seasonic Focus GM, seems to be discontinued now