For the first time in 20 years, everything changes for PSUs, later this year, early next.Has much changed in the last 5 or so years, in terms of top brands, and series ??
Yes other than some of the other 2 and 3 series and the new G6 series EVGA is a total joke and should be avoidedHas much changed in the last 5 or so years, in terms of top brands, and series ??
The biggest offenders for tripping PSUs, both on transient spikes (old Seasonic Focus and some others [that are mentioned in the fine print on the tier list above]), and 12v sense wire noise issue (old Seasonic Prime =>850w)saying a supply's good or that a 3070 Ti is tripping it.
Official minimum for PSUs from NVidia/AMD etc is not that accurate, the best way is to cross-reference the awesome O!technology roundups:I know the minimum recommended for the 3070 Ti is 750 W
TechPowerUp seems to have the best setup for this and they've measured 330 W sustained and 425 W 20 ms spike from a 3070 Ti. That's consistent with the Ti usually running about 50 W more than the non-Ti 3070 (for example, in the TUF 3070 non-Ti review you linked TechPowerUp measured 280 W sustained).For your GPU specifically it will never go over ~250W stock, or ~280W overclocked.
Depends on the brands, the spreadsheet on the cultists Tier list has incredible vast and up to date reviews:I've unfortunately found review coverage is generally spotty.
Only source for this would be Aris youtube channel Hardware Busters International and GamersNexus channel and PSU cultists Discord. Aris for instance did go in-depth of early sample vs quickly fixed-re-done samples of Gospower made Cooler Master V SFX and MWE V2 White/Bronze which had issues.But that doesn't help much with checking whether mistakes were made in an update or in quantifying version to version differences like noise reductions. Maybe you get lucky and the version you're interested in has a review though.
EVGA did do some meaningful changes, they got 16AWG cables to the first 8 pin PCI-E pig-tail (but only on 850W and above xD). and they got a true 50c full range of the PSU. As for Prime vs Focus, yeah that was weird, with all primes 750W and below actually being based on the focus platform. Best place to get info like this is linustechtips power supply forum section (jonnyguru and a couple of other really knowledgable/experienced people post regularly), and the discord for PSU cultists.clarity on whether EVGA offers functional improvements from the Seasonics or whether the changes are just cosmetic. It's been similarly difficult to get clarity on differences between current Prime and Focus models though most of what I've encountered seems to hint toward the Primes.
Yup, if you're really sensitive to noise, and/or have a SFF build close on the table, the standard/A/A+ tag is not useful, you do end up needing to check the actual Cybenetics PDF. And then of course low frequency noise coil whine isn't covered xDI'm more concerned with maximum on application noise rather than Cybenetics' average noise across the fan's RPM range in an anechoic chamber. Aris also uses average noise in his reviews and, from what I can tell, it ends up being an indication of a supply's fan stop load percentage more than anything else.
Yeah that's the Extreme version xD, they nicely mentioned ~50w more on top of the MSI 3070 Ti you have
That's not necessary, at least for the 3070 Ti, the spikes are covered within OCP triggering points, without over-speccing the PSU. For 4000 series, well it's gonna be interesting.Calling the 3070 Ti 330 W and using the old 1.3x rule suggests 850 W as a minimum supply
It's time-consuming yes. You need to completely redesign the inlet, and have to use grill shroud to make effective use of 135/140mm fans. For instance Be Quiet! Dark Power Pro 12 has a novel never before seen inlet and shroud (a meshfilter like on Lian Li/Phanteks cases). And it does wonders. But it added dozens if not hundreds of hours of work, and who know how much it cost xD
None of the .pdfs I've looked at have dB(A) as a function of RPM or load, only the average. And, since most supplies of interest here lack certs, .pdfs typically don't exist to check. Kitguru, TechPowerUp, and Aris' Tom's versions can give enough dB(A) points to have a decent idea. Depends on the review. At least it's possible to get some sense of what's typical and pick up on some of the fails. Like the 56 dB(A) Seasonic SnowSilent 1050W.you do end up needing to check the actual Cybenetics PDF
A 20 ms spike is basically DC as far as the control loop and several protection mechanisms are concerned. Whilst forum viewpoints tend towards willingness to push operating margins, I think mostly due to lack of familiarity with power supply design and operation, it's common engineering design practice to rate more conservatively. The underlying question here is how brief a transient needs to be before it stops meriting consideration from as essentially steady state, which isn't a hard cutoff and has an application dependent transition. Not being an ATX designer I can't speak to this directly but I can say, for the supplies I've been involved with, 1) the transition from DC-like to transient consideration mostly happens in the 10 ms to 3 ms range and 2) I'm not seeing anything in ATX motivating substantially different considerations.That's not necessary, at least for the 3070 Ti
What I'm saying is coming directly from posts i observed from Jonnyguru the chief designer at Corsair, and the previous owner of the most prestigious and venerated PSU review website, and couple of other peeps that know their stuff (as well as contributor to the tier list). not "users" only. People are running 3070 Ti on Corsair SF 750W platinum np and 12700k stock and it's only 25-30dB at ~570w range).I think mostly due to lack of familiarity with power supply design and operation, it's common engineering design practice to rate more conservatively. The underlying question here is how brief a transient needs to be before it stops meriting consideration from as essentially steady state, which isn't a hard cutoff and has an application dependent transition. Not being an ATX designer
None of the .pdfs I've looked at have dB(A) as a function of RPM or load, only the average.
And it's gonna do nothing to quite a big chunk of Tier A PSUs on that tier list.But rating at 425 W for a longer duration 1.3x spike doesn't look unreasonable to me
Yup the 10ms to 1ms range is the most crucial, and is gonna be a big make or brake moment for 4000 series and PSUs. Aris talked about, how everyone focuses on 100us 200% spike/excursion value, but how that is nothing, and than the 10ms 160% spike is the biggest concern:1) the transition from DC-like to transient consideration mostly happens in the 10 ms to 3 ms range and
Yeah they really knocked it out of the park with their first PSU, same factory like Corsair, very well designed, in a smaller package than Corsair xDFor the moment I find myself leaning towards XPG.
Lets say you're running that Zotac (it's spikey, but not so bad, and it's the only really spikey part in your system)So, yeah, I wouldn't be rating a 3070 Ti at 660 or 990 W for power supply specification. But rating at 425 W for a longer duration 1.3x spike doesn't look unreasonable to me. A good portion of the design I have done has had to handle 1.4–1.5x at similar bandwidths.
Yep, decent PSU fan curves all track similarly for noise as a function of load since they're generally using comparable fans and dealing with about the amount of heat because there's not big efficiency spreads among, say, 80+ gold and platinum supplies. In my case the system wattage is a bit higher than what you picked, the best proxy I can find for the PX-1000 suggests an aggressive fan curve, and the Cybercore 1000 runs a relaxed curve with an atypically quiet fan (for a PSU). That pushes the acoustic noise estimate towards a large difference between the two.But you get the gist, you can almost max a PSU at ~750W and get as good noise as if you would overspec some brand by many hundreds of watts.