Corsair RMX Series RM850x - Power Supply - 850 Watt

Look, so far this thing is awesome. But... those reviews complaining about cables?Yeah the cables are not great and it's obvious why.I had no issues with length, but the capacitors built into the wires (I assume that's what they are, as prominent review sites complain about this) makes the wire ROCK SOLID IMPOSSIBLE TO FLEX/BEND a couple cm from the end. So it's REALLY an unneccessary struggle to wire your MB (CPU was THE WORST offender, though the 24pin to the MB was so fat it really fought me trying to fit it through a Corsair 5000D cable management port. Seriously, their own case could barely handle this.)Why is it obvious? Because for ONLY $110 you can buy their premium cables. Ugh. I'd highly recommend it though I have not.I replaced a DOA EVGA PSU ... MoreLook, so far this thing is awesome. But... those reviews complaining about cables?Yeah the cables are not great and it's obvious why.I had no issues with length, but the capacitors built into the wires (I assume that's what they are, as prominent review sites complain about this) makes the wire ROCK SOLID IMPOSSIBLE TO FLEX/BEND a couple cm from the end. So it's REALLY an unneccessary struggle to wire your MB (CPU was THE WORST offender, though the 24pin to the MB was so fat it really fought me trying to fit it through a Corsair 5000D cable management port. Seriously, their own case could barely handle this.)Why is it obvious? Because for ONLY $110 you can buy their premium cables. Ugh. I'd highly recommend it though I have not.I replaced a DOA EVGA PSU which had 2 dedicated power cables for the GPU (this Corsair only has daisy-chained ones which makes wiring ugly) and all cables were far more manageable.The PSU would be a solid 5/5 if they didn't make intentionally brutal cables in order to sell premium cables for NEARLY THE COST OF THE PSU... ($130 for a PSU, then $110 to replace the cables? Ugh)

~ The 80 Plus Gold certification means that at around 50% load, this power supply should be 90% efficient. Ideally to achieve this efficiency rating, you should choose a power supply that is rated for double the average load of your PC. The typical range on 80 Plus rated PSUs is between 40 to 60% load for the best efficiency, with peak efficiency is typically right around 50% load. The system components dictate the total power consumption, regardless of the wattage rating of the PSU. However this is where efficiency begins to be meaningful in selecting a PSU, and a proper selection will result in savings at the meter over a lower efficiency usage or lower efficiency rated power supply. This power supply has enough overhead to meet most gaming PC or workstation ... More~ The 80 Plus Gold certification means that at around 50% load, this power supply should be 90% efficient. Ideally to achieve this efficiency rating, you should choose a power supply that is rated for double the average load of your PC. The typical range on 80 Plus rated PSUs is between 40 to 60% load for the best efficiency, with peak efficiency is typically right around 50% load. The system components dictate the total power consumption, regardless of the wattage rating of the PSU. However this is where efficiency begins to be meaningful in selecting a PSU, and a proper selection will result in savings at the meter over a lower efficiency usage or lower efficiency rated power supply. This power supply has enough overhead to meet most gaming PC or workstation demands, it should handle modern hardware configurations with ease, perfectly in most load scenarios. Many current graphics cards can range from 200 to 300+ Watts and higher peak consumption, for example an Nvidia 3080ti can peak at 350 Watts under load. If you need to get a general idea of how much wattage your system or planned build uses, Newegg offers a general voltage calculator: search [ Newegg power supply calculator ] There are more in depth voltage calculators out there, should you need to zero in on your specific needs. I was pleased with the number of cables and connectors, for example the SATA power cable has 4 connectors, which I was able to attach all 4 of my drives on one cable, without having to run a second one. I have my front panel fans running from a fan controller that I adapted to molex, along side a blu-ray drive also adapted to molex. This is so that I only have minimal cables run, for ease of management and a cleaner look. The 135mm fan is whisper soft, it even stops under low load for silent operation. The fan features Magnetic Levitation bearings that operate without physical contact, which should prevent any mechanical wear. Overall I have been very satisfied with this PSU, it has a really decent build quality and has exceeded my expectations. The ML Fan was a welcome surprise, the sleeved cables are a nice touch, and the ribbon cables tuck away nicely out of sight. The all black aesthetic matches my current build nicely. Building with a modular PSU is always a breeze, and this power supply is no exception, the build quality and attention to detail really helps this power supply stand out. 4.5 eggs.

Full disclosure Newegg sent me this Power Supply to review, as a NewEggspert. There is no bias in my reviews and as such they are honest. This will not be a long-term performance review since we are required to put the reviews up within thirty days of receiving the item. Remember this, your power supply is the heart of the computer and is the single most important piece to building a good and reliable computer. NEVER skimp and buy or take a cheap or free power supply, it can lead to unstable operation, crashes, loss of valuable components, or even fire. I am a longtime supporter of EVGA power supplies and other Corsair peripherals lets see if this power supply can hold up better than the last one, I received, but in all fairness, it was a gaming computer the old one ... MoreFull disclosure Newegg sent me this Power Supply to review, as a NewEggspert. There is no bias in my reviews and as such they are honest. This will not be a long-term performance review since we are required to put the reviews up within thirty days of receiving the item. Remember this, your power supply is the heart of the computer and is the single most important piece to building a good and reliable computer. NEVER skimp and buy or take a cheap or free power supply, it can lead to unstable operation, crashes, loss of valuable components, or even fire. I am a longtime supporter of EVGA power supplies and other Corsair peripherals lets see if this power supply can hold up better than the last one, I received, but in all fairness, it was a gaming computer the old one was in. This power supply comes with a 10-year warranty which is about how long you would expect it to last. Now let me tell you about Corsair and my warranty experiences, so far, they have been one of the best I have encountered in a very long time. I have had a couple of warranty claims with them In all three instances, Corsair was professional and very accommodating, and I think it is important for people to remember to treat people on the other end of the phone with some respect and you will get better service. Before I go too far, this is a note to Corsair, Power Supplies in general need more innovations and as a power gamer I want to be able to monitor my power supply and be able to tell when a rail is failing under load. Why not add in diagnostic chip that can report voltages to the corsair iCue via USB. PLEASE, eliminate the sharp plastic corners on the connectors, that are becoming too common to power supplies as they are dangerous and cut deeply! Lastly, label the connector ends better for which side goes to the power supply end and what side plugs into the equipment side, you cannot assume the average builder knows what end goes where. Or clearly state that it doesnt matter. I ran my 1080TI at full power load drawing nearly 400watts for hours and had no issues with benchmarking the system or playing any games. Everything ran fine and the power supply was whisper quiet even when the fan was on cooling the PS. To all users, READ the directions there is very good information in them, like NEVER mix cables from different power supplies! Testing of the RM850 has gone very well as it passed my clean power test when putting it on my oscilloscope, which is one of my most important requirements. I also recommend to anyone that has expensive computers to put them on a CyberPower UPS, I have had great luck with them (Different company than CyberPower Computers) Having clean (noise free) reliable power (always at the needed voltage) makes electronics last years longer than they would plugged straight into an outlet.