Question hi guys, need specialist advice from you about which psu to buy.

Jan 16, 2021
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hey guys i need your help so i can make up my mind what psu to buy.
first i want to apologize for my bad english grammar, i am self teached guy and i am sorry but my caps lock key is broken so i cant use it.
my budget is between 160$ to 185$ which is close to 150-160 euro
my pc set up is AMD AM4 Ryzen 7 2700X - 3,7GHz
SAPPHIRE Radeon RX 590 8G NITRO+
i got 2 case fans
the case will be my 10 years old case from my old pc atx format
Corsair VENGEANCE LPX 16GB (2x8GB) DDR4 3200MHz
AM4 TUF GAMING X570-PLUS AMD X570, ATX but i am not sure will i get it or something else from the x570 series/550
i got only psu and motherboard left to buy. for the motherboard i will ask for help on the mobas forum treaths later.

i got 2 goals when i am looking to buy a psu 1. noise [i got headache from my old psu noise and health started to suffer from it] so i really want to buy the most silent working psu for my budget out there]
2. i really want to buy some quality psu with bigger wattage stocked in it so when in future i want to upgrade my pc with lets say for example ryzen 9 12 core and 2080/3080 series gpu or radeon rx 6900xt i will not need to worry to change my psu too.

i read other posts too and i saw that you guys are saying the seasonic focus gx and seasonic prime series dont work normaly with 3090 gpu series is this the case only with this model or it is problematic when working also with 3080 and 2080 ti too. asking this cause i think in future to upgrade without worring to change psu too.

said that 2 points i want to ask is 850w enought or i need to get 1000w so i dont need to worry for future about getting new psu.
i read tons of reviews here and on other sites but the more i read and the deeper i get into the matter i got more lost honestly. so i want to ask here guys to tell me your honest pro advices.

how much is the optimal working spot for a psu so i dont hear loud noises from it when the pc is on heavy load, i read around the net that it its best if it is working on 50-60 percent of its capability. also most of the psu that i am choosing from have silent fan mode and on 30-40 percent of its wattage usage the psu fan is not spinning which leads to less noise. if this is the case is it best to get 1000w psu so when my pc set up is using lets say 400 w to 500 w the fan will not spin so fast since this is 40 percent or close to it/maybe it will not even turn on and stay in silent mode or maybe this 1000 w is overkill and 850w is better.
which will also save me some cash.

i am thinking to press the trigger and buy Seasonic 850W, FOCUS GX Series, 80 PLUS Gold


but there are 2 different models on the market with equal prices SEASONIC FOCUS PLUS GOLD 850W SSR-850FX

https://www.vario.bg/seasonic-focus-plus-gold-850w-ssr-850fx

tell me please which one is better version
and which is the newer model - is it the gx one from the first link or is it the second link the one with yellow letters which sais focus plus

is it worth for me to wait more months until seasonic prime gold10000w or 850w comes back in stock from here
https://ardes.bg/product/1000w-seasonic-prime-ssr-1000gd-ssr-1000gd-87808
like is the noise levels less and much better with the prime psu when compared to focus gx psu in order to make me wait more time.

other question i have is about the PHANTEKS REVOLT PRO PH-P1000GC_EU https://www.vario.bg/phanteks-revolt-pro-ph-p1000gc-eu

from the review of this psu here on toms hardware i understand that this is psu basically made from seasonic company and released from another company with some slight cosmetic changes. tell me is it better to buy phanteks revolt pro or the seasonic gx is the solid better option to buy. from what i understand revolt pro uses the seasonic focus plus structere and the phanteks revolt x uses the seasonic prime structure. if u have to choose which one will you go seasonic or phanteks. i am mostly interested if one is more silent then the other.

i am considering some other choise too but i dont know which one is in general more silent during work and has less chances to get coil whine or some other problem after some years, but mostly i really want to buy the most silent psu for my budget ...

so the other options i got in mind are corsair rm, corsair rmx, corsair rmi , corsair hx and honestly here i am lost between all these versions of corsair about which one is the most silent working, there is also 2 different variants of corsair rm850x on the market here in my country

one is Corsair RMx Series RM850x 2018 850W Gold (CP-9020180)
the other is Corsair RMx Series RM850x 850W Gold (CP-9020093)
i dont know which one is the newer and better silent model the one from 2018 maybe is the older or no ... since money wise the price tag is the same.
on top of this there is CORSAIR RMX SERIES RM750X 2021 750W CP-9020199-EU
and from what i hear on the review here this version is less silent then the previews rmx versions and this is why i dont rlly consider the 2021 model as buying option for me.

i am also considering the
be quiet! Straight Power 11 850W Gold (BN284)
or the be quiet! Straight Power 11 850W Platinum (BN308)
https://delshop.bg/components/psu/Be-Quiet-STRAIGHT-POWER-11-850W-80-Platinum
or the be quiet! Dark Power Pro 11 power supply unit 850 W if i can find it cheap during easter holiday ...


XPG CORE REACTOR power supply unit 850 W 24-pin ATX ATX Black
https://techmag.bg/xpg-core-reactor-power-supply-unit-850-w-24-pin-atx-atx-zdladtobu0003
but from the review of this psu i saw it says its not so quiet and there is room for improvements there since i am pretty sensitive user.


i want to ask if the fan bearing technology of all corsair rmx from all the different years of release is rifle bearing, because from some reviews not here thought i read corsair rmx has changed to fluid dynamic bearing over the years or this is false. if its not changed then is there any corsair psu with fdb technology based fan .
from what i understand rifle bearing is less silent then the fdb technology and this is why i am leaning towards buying seasonic gx psu because it has fdb and silent mode too. not to mention all my friends say go for seasonic but i want to hear and read from the knowledge of the people who are working in this sector before i go buy anything.

is there too big of a difference on the noice levels of the psu if you compare gold and platinum variants of lets say seasonic/corsair/be quiet/
or the noice differences are coming from other places but not so much from the efficiency of the psu-s

finally sorry guys for all these questions but i am really lost and dont know what to buy. i read the information you guys provided from here https://www.cybenetics.com/index.php?option=database&params=1,2,0 but still not sure how to act.
due to covid 9 which lead to shortages of the better psu-s on the market for the past 4-5 months i am sitting here with half pc build ready not able to build my set up.
if i had enought budget i was gonna buy corsair ax850 or even ax1000 because this is the top psu from tomshardware best psu-s list for 2021
but first i dont have the patient to wait and gather more cash, and secondly this corsair ax are not available on the market anywhere in my country to even compare its price tag with the rmx or seasonic gx or be quiet straight power 11.

i am also worried that when the day comes and i go to buy better gpu for my pc like 2080/3090 or AMD Radeon™ RX 6900 XT Graphic card [probably i will stick with amd gpu card and go for one of the 6000 series when upgrading] that i will have issues like these guys here who got problems with their corsair rm850x and seasonic focus gx850w psu-s when using the 3090 series gpu.

https://www.reddit.com/r/nvidia/comments/k6axtc View: https://www.reddit.com/r/nvidia/comments/k6axtc/fyi_seasonic_and_rtx_3000_users_w_shutdowns/

https://forum.corsair.com/v3/showthread.php?t=201374

is the problem with this psu-s running this gpu just nothing to be worried about - like coincidence from couple of bad psu-s that came from the factories. or this is real problem. honestly i am thinking to buy the 6000 series gpu in the future so will i got the same problem as the 3090 gpu users have with their psu-s.

maybe i am missing another good psu for my budget and low noise levels that you guys can tell me of ... or my direction of 3-4 psu brands said above are the optimal once.


wish you all the best, stay happy and safe.
 
May 6, 2021
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Hi!

This was a very long question, but to sum it up you are a bit uncertain regarding brand, model, effect and noise level all matched with a budget of 150-160 euro .
When it comes to noise the rule of thumb is:
  • Look for a PSU with a zero RPM option, meaning the fan won't spin unless it needs to.
  • The more effect you have (watt) the more headroom you will have regarding load. Say that your computer draws 400 watts under heavy load. A PSU rated for 650 watts will be under more pressure to deliver these watts compared to a 1000 watt PSU. Efficiency in a PSU drops as it's getting closer to its max load. Less efficiency means more energy is wasted as heat, which must then be dissapated, which means the fan will start.
With this said, a 1000 watt PSU is seldom (never?) needed unless you run several graphics cards, a watt-hungry CPU etc. So if you have a budget of 150-160 euro, I'd say that 1000 watt is overkill.

Regarding brand I can just refer to my own experiences and I've always used Corsairs PSU's in my builds. Right now I have an RM 1000x. It's very quiet (zero RPM fan), is certified 80 gold plus, is fully modular and it has 10 years warranty. So I can recommend this model. The 1000 watt unit is above your budget though, but then again I don't really need the 1000 watts my PSU is rated for. It's grossly overdimensioned for my setup.

If you go for the RM850x or the RM750x you will be well in your budget and get a quality PSU with all the right solutions for silent running in place. Corsair is a quality brand and they are both rated 80 plus gold which is where you want to be. Platinum is unneccesary.

If you look, you will find Corsair RM units for sale. I live in Sweden and found these, just as an example:
https://www.webhallen.com/se/product/283618-Corsair-RM850x-V2-850W-80-Gold-Svart
https://www.inet.se/produkt/6902703/corsair-rm850x-850w-v2

Good luck!
 
Reactions: AvroraBg

Juular

Commendable
Mar 14, 2020
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  • Newer revision Seasonic Focus units (GX/GM) probably shouldn't have problems with RTX3080, but all Prime revisions do. Including rebrands such as Phanteks Revolt, Corsair AX, ASUS Thor, Antec Signature. Although 1000W should be safe anyway.
  • Corsair RM-x 2015/2018 revisions use rifle bearing, same as both Seasonic Focus and Prime. Corsair RM-x 2021 uses magnetic levitation bearing. Corsair RM-i/HX/HX-i/AX/AX-i use true FDB bearing, just as be quiet! Straight Power 11 (different fan but the bearing is from Matsushita too).
  • All RM/RM-x/HX/HX-i/AX/AX-i units are relatively quiet, bqt SP11 is too, and SF Leadex III.
  • Noise doesn't strictly depend on efficiency, it's dependent on the exact design and fan curve. There are a lot of 80+ Gold units that are exactly as quiet or quieter as 80+ Platinum/Titanium.
  • In the end, from that retailer you've linked i'd recommend either 850W Super Flower Leadex III ARGB (yes, it's white and ARGB but it's better unit than Seasonic Focus) or 850W Corsair RM-x for a bit more, or if you really consider getting RTX3090, 1000W be quiet! Straight Power 11.
 
Reactions: AvroraBg
Jan 16, 2021
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  • Newer revision Seasonic Focus units (GX/GM) probably shouldn't have problems with RTX3080, but all Prime revisions do. Including rebrands such as Phanteks Revolt, Corsair AX, ASUS Thor, Antec Signature. Although 1000W should be safe anyway.
  • Corsair RM-x 2015/2018 revisions use rifle bearing, same as both Seasonic Focus and Prime. Corsair RM-x 2021 uses magnetic levitation bearing. Corsair RM-i/HX/HX-i/AX/AX-i use true FDB bearing, just as be quiet! Straight Power 11 (different fan but the bearing is from Matsushita too).
  • All RM/RM-x/HX/HX-i/AX/AX-i units are relatively quiet, bqt SP11 is too, and SF Leadex III.
  • Noise doesn't strictly depend on efficiency, it's dependent on the exact design and fan curve. There are a lot of 80+ Gold units that are exactly as quiet or quieter as 80+ Platinum/Titanium.
  • In the end, from that retailer you've linked i'd recommend either 850W Super Flower Leadex III ARGB (yes, it's white and ARGB but it's better unit than Seasonic Focus) or 850W Corsair RM-x for a bit more, or if you really consider getting RTX3090, 1000W be quiet! Straight Power 11.
hey man thanks for your answer firstly.

- can you tell me why seasonic gx850 gold is behind corsair rm850x and is it also behind be quiet straight power 11 850w too.

- from amazon almost all ppl that bought seasonic gx have done positive reviews and close to 0 complains for failiers, but there are some negative reviews about corsair rmx psu-s about different problems like shutting down, buzzing noices, coil whine and so on.
these things plus the fact that almost all my friends are running seasonic gx/px psu-s and they are positive about it made me rlly thinking to go buy seasonic gx aswell. but here you saying rmx is better then ss gx and i wonder why, and is it better in the noise compartment too.

- can you tell me why in general corsair rm850x is superior compared to ss gx 850w . and where the be quiet sp 11 850w stands between these two.
maybe the fancurve is better or something else.

because i will buy one of this models.

from https://www.cybenetics.com/index.php?option=database&params=1,2,0

i think both corsair rm850x 2018 gold and seasonic gx 850gold have
NoiseLAMBDA-A+
is that right

- i think you are making a mistake or maybe i got you wrong ... about he ss gx 850w fan it says it is fluid dynamic bearing when compared to corsair rmx it is rifle bearing from the 2018 and older versions. and from what i read rifle fans are making bigger noises then fdb fans.
https://seasonic.com/focus-gx

- this is the specifications of rmx
https://www.corsair.com/ww/en/Categories/Products/Power-Supply-Units/Power-Supply-Units-Advanced/RMx-Series/p/CP-9020180-AU#tab-tech-specs
from there i see corsair fan is 135mm ss gx fan is 120 and from what i know the bigger the fan is usually it is more silent because it is swinging less offen but at the same time the first is rifle fan and ss gx is fdb fan and the second one is better.

which one from these 3 models above is the most silent working. what i am rlly looking to get is the most silent working psu from these.

some reviews elsewere of be quiet str. power 11 also saying it is not so quiet working and point customers to buy ss or corsair psu-s without explaining why.

from the review of rmx 2021 model here on toms i saw it says it is noisier then the 2018 version
https://www.tomshardware.com/reviews/corsair-rm750x-2021-power-supply-review/5

from what i read here the 2018 version of corsair rmx is the most silent working of the 2015 2018 and 2021 revisions of it is it because of the fancurve or some other thing.

are both models below from 2018 i am lost because the shops dont mention the year and dont put v2 for the 2018 and just use numbers ...
Corsair RMx Series RM850x 850W Gold (CP-9020093)
Corsair RMx Series RM850x CP-9020180-EU, 850W


- is there anywhere a good seasonic gx review i can see because i cant find one here on this site its only the old seasonic focus plus reviews before 3 years. there is non for the revision oneseasonic gx model

- honestly man, i am thinking when i go upgrade in the future to get gpu from the amd brand probably something from 6000 or 5000 series. will 850 w be enought for it if i buy seasonic gx or corsair rmx, because right now from what i see i cant find any 1000w psu from seasonic gx corsair rmx or bequiet 11 from the models i am interested below 200 euro in my country and this is beyound my budget. so i will get 850w question is which one to buy.


thanks in advance man
 
Jan 16, 2021
3
0
10
0
Hi!

This was a very long question, but to sum it up you are a bit uncertain regarding brand, model, effect and noise level all matched with a budget of 150-160 euro .
When it comes to noise the rule of thumb is:
  • Look for a PSU with a zero RPM option, meaning the fan won't spin unless it needs to.
  • The more effect you have (watt) the more headroom you will have regarding load. Say that your computer draws 400 watts under heavy load. A PSU rated for 650 watts will be under more pressure to deliver these watts compared to a 1000 watt PSU. Efficiency in a PSU drops as it's getting closer to its max load. Less efficiency means more energy is wasted as heat, which must then be dissapated, which means the fan will start.
With this said, a 1000 watt PSU is seldom (never?) needed unless you run several graphics cards, a watt-hungry CPU etc. So if you have a budget of 150-160 euro, I'd say that 1000 watt is overkill.

Regarding brand I can just refer to my own experiences and I've always used Corsairs PSU's in my builds. Right now I have an RM 1000x. It's very quiet (zero RPM fan), is certified 80 gold plus, is fully modular and it has 10 years warranty. So I can recommend this model. The 1000 watt unit is above your budget though, but then again I don't really need the 1000 watts my PSU is rated for. It's grossly overdimensioned for my setup.

If you go for the RM850x or the RM750x you will be well in your budget and get a quality PSU with all the right solutions for silent running in place. Corsair is a quality brand and they are both rated 80 plus gold which is where you want to be. Platinum is unneccesary.

If you look, you will find Corsair RM units for sale. I live in Sweden and found these, just as an example:
https://www.webhallen.com/se/product/283618-Corsair-RM850x-V2-850W-80-Gold-Svart
https://www.inet.se/produkt/6902703/corsair-rm850x-850w-v2

Good luck!
thank you for your explanation about the efficiency subject man now my mind is alot more clear about it.

yes i am leaning more on the thought to buy 850w psu not 1000w mostly because there is no good prices for the 1000 w psu right now due to covid and demand and where there are in stock the prices are too much for me compared to the 850w. thats atleast in my country from where i want to purchase it.

so 850 w psu will be the choise.
but i dont know which one corsair rmx or ss gx or even be quiet str power 11 850w gold.
i am looking mostly for the most silent one.

can u tell me what zero RPM fan means its something like the fan is not moving when the psu is under 30 -40 percent load right

if this is the meaning of zero rpm fan will this mean that seasonic gx 850w gold has it also since here
https://seasonic.com/focus-gx?__cf_chl_jschl_tk__=766ed70f486661701e5cb737587ee6cbb73cf842-1620525290-0-AefxIeUZuKY5vwK_Kww9krH5shyKhaLUyJsa54OyCl_nFlALGtxsH47ARfd54fEPZy7xY93FIEjTsvNSyXViWAxxNWplAl2b3lvRfKsnUwQpDZWTzG6CUKMLgXrAP8b-REoQNP3Bw_GlM-qA1KMTO401LHJKW-PIP5h8_a3hrE1aM8s5M_CxB7SwkvqydGRUvBT2rm0LoDY-tJzIcnl5kT-oX3ScKBhJR2NwNbtfsc4MpdktVgP95zaSxZl-4R7w-_LVb0jpAbDL7ttk7lxoDqzyM5SJdEcEhw9u10r2sGVoXp7aZmC_pCMPmmPKh2lWBdYukf18ObZn6pI51BSJIbp57U9YXtr5dxilO3OZRcWlufO-c00i7DmRQDiiXDMAOkB82CPiRbTBGx4GBc3ZDhQ#specification

Fan ControlS3FC - Fanless until 30 % load


i think if so then this is same as the corsair rmx right.
thing is most my friends have seasonic gx and they are positive about it and amazon reviews are also almost all good about it
but the corsair reviews in amazon some of them are with complains about coil whine and other working issues so this made me worried.
before asking for help here i was on the road to buy seasonic gx honestly but now i dont know which one is overall more silent. i know in every factory there will be couple of psu that will come rma from the factories themselves but still ...
 

Juular

Commendable
Mar 14, 2020
797
181
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84
- can you tell me why seasonic gx850 gold is behind corsair rm850x and is it also behind be quiet straight power 11 850w too.
It's really about the price, out of Corsair RMx 2018 and Seasonic Focus GX i'd probably pick the cheapest one. Corsair RM-x is quieter and Seasonic apparently has some problems with it's fans but it's not a major issue. bqt SP11 is still superior because the fan is better and cables are single-connector while otherwise it's comparable in electrical performance.
from amazon almost all ppl that bought seasonic gx have done positive reviews and close to 0 complains for failiers, but there are some negative reviews about corsair rmx psu-s about different problems like shutting down, buzzing noices, coil whine and so on.
First, Amazon user reviews are almost useless since Amazon manipulates them (incentivizes good reviews, deletes 'bad' ones) and well, them being user reviews in the first place. And such problems as coil whine are universal, it's not about the PSU, it's about the cleanness of the electricity in your mains, if it has AC noise then any good PSU will whine. Other possible problems are still possible, with any PSU, including Seasonic, there's always sub 1% of failed units.
- i think you are making a mistake or maybe i got you wrong ... about he ss gx 850w fan it says it is fluid dynamic bearing when compared to corsair rmx it is rifle bearing from the 2018 and older versions. and from what i read rifle fans are making bigger noises then fdb fans.
Both rifle and FDB bearing are type of sleeve bearing, bearing noise it the same. But in most cases when the bearing is called FDB it's actually just rifle since FDB is patented type of bearing by Matsushita. Both Corsair RMx 2018 and Seasonic Focus/Prime use rifle bearing, Corsair RM-i/HX/HX-i/AX use 'true' FDB bearing, be quiet! Silent Wings 3 fans in Straight Power 11 use true FDB bearing too. New Corsair RMx 2021 uses Sunon's magnetic levitation bearing.
some reviews elsewere of be quiet str. power 11 also saying it is not so quiet working and point customers to buy ss or corsair psu-s without explaining why.
from the review of rmx 2021 model here on toms i saw it says it is noisier then the 2018 version
from what i read here the 2018 version of corsair rmx is the most silent working of the 2015 2018 and 2021 revisions of it is it because of the fancurve or some other thing.
You know, noise is relative. Corsair RMx 2018 is quietest on paper but Corsair RM-x 2015, 2018, 2021, Seasonic Focus Gold, be quiet! SP11 all can be considered quiet enough IMO, at the load levels when you'll hear anything from them (60-70% load) the rest of your PC would likely be noisier anyway.
- is there anywhere a good seasonic gx review i can see because i cant find one here on this site its only the old seasonic focus plus reviews before 3 years. there is non for the revision oneseasonic gx model
Phanteks AMP and NZXT C are based off Focus GX :
are both models below from 2018 i am lost because the shops dont mention the year and dont put v2 for the 2018 and just use numbers ...
Corsair RMx Series RM850x 850W Gold (CP-9020093)
Corsair RMx Series RM850x CP-9020180-EU, 850W
CP-902009/902015 is 2015 version, CP-902017/902018 is 2018 version, CP-902019/902020 is 2021 version.
i go upgrade in the future to get gpu from the amd brand probably something from 6000 or 5000 series. will 850 w be enought for it if i buy seasonic gx or corsair rmx
Yes, RX6800XT at least, not sure about RX6900XT.
 

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