I also read that recent drivers have reduced the transient spikes - Igor’s lab did one that measured on an older driver spikes of up to 600w, with newer drivers resulting in lower (500w) and fewer spikes.A good PSU could last you several builds, so investing in a good one makes sense. I think they say you need these huge PSUs because they know their cards produce high transients which can trip a lot of PSUs. Or the “GPU manufacturers only state you need x PSU wattage because they have to account for lower end units”
I guess this just goes in the face of the most popular sentiment over PC building recommendations of "you don’t really need x watt PSU, y components will only draw z power. It’s working perhaps a bit too well in protection. Regarding the OPP tripping, it’s not really the PSU’s fault. Saw a lot of it on reddit over the past months, although not only limited to Seasonic units. 850w+ users aren’t really seeing this happen. The vast majority are 650w and 750w users. I think it has to do with the 850w unit having a higher rating - while I do see some users with 850w units reporting problems, it’s usually on 3090s and overclocking. Those guys would have more likely (if not definitely) caught the issue. They are not a turn key “tier 1” manufacturer like Delta or CWT from the brand position. Here is the funny thing about Seasonic, most people have them as a “tier 1” or “tier A” manufacturer of PSU and they do make excellent units. Most of the units I’ve owned over the years are CWT and Seasonic made. Another work round would be to down clock the GPU from the factory OC or if the user sets an aggressive OC. The issue is more GPU related as the specific GPU goes out of spec on its pull which then trips the protection. I have the 650w version of that unit and it’s very good and I recommend it. True, this does occur and Seasonic does have a work around as they will send you a free PCI-E power cable to “fix” the issue.
I have the older 2017 Seasonic Focus Plus Gold 850w, which supposedly suffers from this, but haven’t had had any issues with it so far Regarding the Seasonic Focus Plus units, they did identify that they can trip OPP on high transient load GPUs. That is why professional reviews (not some guy sticking it in a PC or using a multi meter and saying it works) are so important.
A mediocre gold PS may do well in EPRI testing at room temperature but efficiency may dive once in a PC case.
So the label is meaningless unless the PSU is tested in a hot box to get temps above 40c. Gold efficiency is a rating done by EPRI and tested on platforms at 28c (+/- 3c) while virtually all gaming PC cases have an internal temp of over 40c while gaming. Even the rare few good ones may push you towards a unit whose features you may never use. If you have a corsair PSU why the need for a new unit especially if the PSU calculator says you only need a 500w unit?ģ- is well reviewed by a professional review site (Tom’s, techpowerup, kitguru, if it’s an older model you can try Jonnyguru) and uses a modern platform & topology…basically DC-DC w/LLC resonant converter which is most “gold” units and virtually everything platinum and above in efficiency.Īvoid tier lists, most are bias and created by fan boys not professionals. not entirely sure what rating or standard ( gold i think ) it is. i currently have a corsair one in my PC no huge issues with it that i know of.