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SilverStone on Wednesday introduced Extreme 850R Platinum, the world's first SFX power supply based on the SFX12V 4.0 standard, which has specifications comparable to ATX 3.0, and offers a 16-pin 12VHPWR connector capable of 450 W continuous output with excursion-tolerance within ATX 3.0 and PCIe Gen 5 specs, and improved sleep/wake performance. A Phanteks Revolt power supply can match the needs of modern components. With many high-performance CPUs requiring over 200W and GPUs reaching 450W+, an 850W supply is highly recommended. With its modular design, the Revolt PSU can support a wide variety of devices including NVIDIA RTX 40 Series GPUs, thanks to its dedicated 12VHPWR output. This new connection can deliver an astounding 600W along a single cable. All power is supplied safely thanks to the many forms of output protection Phanteks has built into the design, including Overpower, Over Voltage, Short Circuit, and Over Temperature protection. You've got the choice of 550W, 650W, 750W, and 850W capacities, which makes this a good choice for modern GPUs like NVIDIA's RTX 30 series. The 80 Plus Gold certification means you can expect to enjoy high levels of efficiency that result in less waste heat inside the chassis and lower power consumption at the wall. For more on this subject, see our A Basic Guide To Motherboard, Case, and Power Supply Form Factors feature. After deciding on the PSU wattage, the next thing you need to consider is the form factor. They’ll either come in the ATX or SFX form factor.
Simply put, an 850W 80 Plus PSU will draw a maximum of 1,062.5W at 100% load, which means less wattage is wasted as heat in the conversion process, saving your energy bill. Consider upcoming GPU power requirements. Although the best graphics cards are usually more power-efficient than previous generations, their power consumption increases overall. This is why the latest 12+4 pin connector that the upcoming generation graphics cards will use will provide up to 600 W of power. Currently, a pair of PCIe 6+2 pin connectors on dedicated cables are officially rated for up to 300W, and three of these connectors can deliver up to 450W safely. You should also add the up to 75W that the PCIe slot can provide in these numbers. A fully modular power supply unit lets you use only the cable you need for simple and clean cable management. Rosewill SilentNight 500 W Review - Efficiency & Temperatures | TechPowerUpWhile technically true, note that the difference in efficiency between half load (250W) and full load (500W) in that chart is 1%. The beauty of being a PC enthusiast is that you’re not constricted by any particular form factor, manufacturer, chipset, with the whole industry operating under de facto formats. The ATX form factor for power supplies, motherboards, and PC cases has stirred up competition between hardware manufacturers since the late 1990s and has made PC building much more accessible to your average consumer. Prior to the implementation of ATX, which was done by Intel in 1995, form factors were mainly proprietary to each company, riddling the PC market with incompatible parts, unfair pricing models, and a lot of confusion cast towards your average consumer.Jun 3rd 2023 Seasonic Shows ATX 3.0 and PCIe Gen5 PSUs, MagFlow Fans, and Goes Industrial at Computex 2023 (9)
It’s almost impossible to find a non-modular 850W PSU. But some manufacturers design semi-modular ones which are affordably priced. But SFX PSUs come in smaller designs to fit in small form factor (SFF) cases because they don’t have the space needed to fit a full-size ATX PSU. The "Buy a PSU rated at twice what you'll actually need" efficiency argument hasn't made much sense since the early 2000s. PSUs today are far more efficient overall than they used to be, across a much wider range of power delivery. :) The 80 Plus Gold efficiency rating is usually the sweet spot for most gaming PC builds. Anything above this is overkill and quite expensive! ATX 3.0 Compatible It would be irresponsible for us to include a 600W 12VHPWR connector with a 850W power supply as many high end CPUs are now capable of drawing 200W+ all by themselves, leaving only 50W for everything else!Under what real scenario will someone be drawing 600w gpu and 200w cpu at the same time on a SFX psu? But I get it for liability reasons.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. To be 80 Plus certified means that the PSU has at least 80% efficiency at three load levels of 20, 50, and 100 percent loading. Once you have decided on the form factor and modular design, the next thing you need to consider is the efficiency rating you can afford.
Almost all PSU manufacturers design PSUs with the 80 Plus efficiency rating certification. The “80 Plus” rating system is the industry standard! The Phanteks Revolt PSU has been designed to offer outstanding performance and efficiency. Thanks to this, these PSUs can produce exceptional power output with minimal cooling. In fact, the cooling fan won’t even activate until the PSU reaches 30% load for zero noise. Once this load is reached, optimum temperatures can be maintained, thanks to the Revolt’s intelligent temperature control, which carefully balances cooling performance and noise levels. In addition to being whisper quiet, the 92mm fan’s fluid dynamic bearings also reduce vibrations which is ideal for minimising wear and tear. In fact, Phanteks is confident in every component within the Revolt SFX, that they offer an amazing 10-year warranty. Phanteks Revolt 850W SFX PSU Specifications: ATX 3.0 CompliantI have a 750W PSU. My CPU is 105 watts. So, I leave for the GFX card around 250 watts and max 2 x 8-pin connectors. ARFThe best efficiency is at 50% of the rated. So, if the PSU is 850W, then the desired total power requirements from the components should be around 425 watts. You’re more likely going to need an ATX power supply. That’s unless the case manufacturer specifically states you use an SFX one. Modular Design I recommend getting a fully modular PSU since it offers total control of your build’s cable management. Efficiency Rating
As always, buy sensibly. Over-speccing a PSU makes more sense at the low end, where quality differences are more readily apparent. If you're running an extremely high end system, a 100-200W buffer on the high end is sufficient. For as much time as they'll spend near the "sweet spot" of that efficiency curve, they'll spend just as much time on the low end of it during typical idle or desktop usage.
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This is why we don't go too in-depth, especially with power supplies. How we test units involves connecting one to a reasonable load and seeing how it performs in a variety of test scenarios to represent how they would be used by owners. After putting the Dagger Pro 850W SFX to the test in a system with an AMD Ryzen 9 5950X CPU and NVIDIA GeForce RTX 3080 GPU, we encountered no issues. ATX 3.0 is the new specification standard for PSUs. This new design adds a new PCIe 5.0 connector with 12 + 4 pins alongside the usual 6 or 8-pin connection. I presume you already have the estimated total wattage that your PC will draw, and an 850W PSU is the ideal power supply unit to complete the build.
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