Best Power Supply Buying Guide (Jun 2020)

[cucker tarlson]

rm650x is cheaper than s11 plat

is this the whisper m you're talking about ? seems a lot cheaper than others

Ceneo - porównanie cen, sklepy internetowe - kup najtaniej

 

[juular]

is this the whisper m you're talking about ? seems a lot cheaper than others

Yep, it looks kinda funky but it's almost the same thing (and really the same thing as Deepcool DQ-M) inside as Corsair RMx, very similiar platform, there are some minor difference in ripple (due to in-cable caps on Corsair) and noise output (Corsair has a bit smarter fan controller but Whisper is very quiet too) but as you see it's often very cheap and sells like a hot cakes in Europe (it's very hard to find anywhere else).

 

[cucker tarlson]

this one is even cheaper

Bitfenix Formula 650W 80 Plus Gold - Zasilacze do komputera - Sklep komputerowy - x-kom.pl

Bitfenix Formula 650W 80 Plus Gold w x-kom.pl > Odbiór za 0 zł w dowolnym salonie, błyskawiczna wysyłka. Zapewniamy inteligentny wybór.

www.x-kom.pl

oh it's non mudular

they seem loud tho.

you think superflower leadex gold I've had from Nov 2014 is due replacement ?

 

[juular]

they seem loud tho.

In fact, it's even quieter than Whisper M, no idea why (550W version were completely fanless in Aris review even, maybe they've fucked up fan controller in that batch).
Edit: side note on Formula and Whisper, 450/550W SKUs had some reports of shutting down with high-transient load GPUs on them. Probably due to too sensitive OCP on single GPU rail available on 450/550W versions which kinda confirmed by no such occurences with 650W+ versions which have two rails for GPU connectors and hard mod you can still do on 450/550W versions to add a second cable on second rail still present physically. So if anything, aim for 650W+ versions of them.

you think superflower leadex gold I've had from Nov 2014 is due replacement ?

Eh, if you're content with it's performance (acoustic mostly as you don't see electrical but it should be fine) then i see no reason for that, it's a good PSU with quality components.

 

[cucker tarlson]

In fact, it's even quieter than Whisper M, no idea why (550W version were completely fanless in Aris review even, maybe they've fucked up fan controller in that batch).


Eh, if you're content with it's performance (acoustic mostly as you don't see electrical but it should be fine) then i see no reason for that, it's a good PSU with quality components.

I mean the whisper series is loud,take a look,the 850w one ramps up to 1500rpm at 100w

Whisper M

Overview Specs Reviews Gallery Download Center...

www.bitfenix.com

SP11 plat spins at 400rpm up to half power

 

[juular]

I mean the whisper series is loud,take a look,the 850w one ramps up to 1500rpm at 100w

These graphs you see in manufacturer marketing materials are useless as modern fan controllers don't account only for load but temperature too and how the load changes, you need to look at actual reviews. And Aris have reviewed both lineups.

Bitfenix Whisper Series 550W PSU Review

Bitfenix recently released its Whisper PSU family, which, as it name implies, promises quiet operation. This review focuses on the 550W model, offering 80 PLUS Gold efficiency and fully modular cabling.

www.tomshardware.com

BitFenix Whisper Series 850 W Review

Bitfenix has been working on its second PSU line, the Whisper series, for a while now. As the names implies, these PSUs promise to be very quiet, all while offering high performance and reliability. The flagship of the Whisper line with a capacity of 850 W will be put to the test today.

www.techpowerup.com

Bitfenix Formula Gold 650W PSU Review

The Bitfenix Formula Gold 650W is an affordable PSU that offers good performance and high efficiency. The cherry on top is its quiet operation. This unit's only compromise appears to be its native cable design.

www.tomshardware.com

BitFenix Formula Gold 750 W Review

The BitFenix Formula Gold 750 W is one of the quietest PSUs in the sub-$100 category, and it performs very well in all other areas. Its fixed cables are the only compromise - you clearly cannot have it all at such an affordable price.

www.techpowerup.com

 

[cucker tarlson]

dunno,rm650x kinda checks all the boxes,10 yr warranty including
is this the right 2018 version ? I saw more than one

Zasilacz CORSAIR RM650X 650W (CP-9020178-EU)

CORSAIR RM650X 650W (CP-9020178-EU) Zasilacz w Media Expert! Standard: ATX, Moc [W]: 650 | Cena i opinii w Media Expert

www.mediaexpert.pl

 

[juular]

is this the right 2018 version ? I saw more than one

Doesn't matter, both 2015 and 2018 versions are practically identical in performance. But yes, that's 2018 version (you see *2017* in the model number, where as 2015 version had *2009* there, SKU project start date i assume).

 

[cucker tarlson]

never had a multi rail psu before,if my 2070S has two 8 pins they both plug into vga 1 ?

 

[juular]

never had a multi rail psu before,if my 2070S has two 8 pins they both plug into vga 1 ?

My rule of thumb, if your GPU needs two PCI-e power connectors then you need to use two separate cables (not one Y-split, except for rare instances where a cable with two connectors on GPU end actually has an appropriate amount of pins on the PSU end), but if you don't have problems running it with two cables from one rail (only VGA 1 or 2) then yeah, it's fine, if it would trip OCP (which would require cycling the PSU power switch if it really have tripped, if it just restarts that not a PSU) then you can split the load to two rails but i'm sure that wouldn't be needed for RTX2070 Super.

 

[cucker tarlson]

so better run one from vga1 and another one form vga2 ?

 

[juular]

so better run one from vga1 and another one form vga2 ?

No, try running from separate cables but from one rail, if PSU trips (highly unlikely with this GPU) then split the load for two rails.

 

[cucker tarlson]

why not just split it in the first place ? the gpu is not a power hog,but overclocked it can probably hit ~250w.isn't it too much for a single rail ?

 

[juular]

why not just split it in the first place ? the gpu is not a power hog,but overclocked it can probably hit ~250w.isn't it too much for a single rail ?

You can, but you lose the purpose of multi-rail - lower OCP trigger point to potentially save your equipment with higher chance should a short occur (on GPU cables or in the GPU itself).

 

[cucker tarlson]

oh,I didn't think of that.multi-rail is not really that popular these days.

 

[djisas]

oh,I didn't think of that.multi-rail is not really that popular these days.

From what little i know, it never was, enthusiasts always preferred single rail but at one point for safety reasons psus had split rails, like my former Zalman, it had like 6 split rails combining over 60 amps, a little over my current Seasonic with 63 amp single rail irc...
The most power hungry GPU I had was a radeon 2900XT no issues ever with psu...

 

[cucker tarlson]

You can, but you lose the purpose of multi-rail - lower OCP trigger point to potentially save your equipment with higher chance should a short occur (on GPU cables or in the GPU itself).

I just thoght of sth else - wouldn't splitting the load keep the temps a little cooler ?

 

[juular]

I just thoght of sth else - wouldn't splitting the load keep the temps a little cooler ?

No. You already split the load using two separate cable and connector sets. Using two separate rails doesn't change much in this regard as all modern multi-rail units are physically single-rail in fact, with just a set of additional 12V traces (which are usually there anyway on single-rail units, just bridged) and multi-channel supervisor IC.

 

[cucker tarlson]

thanks.
would getting a 850w instead of 650w improve noise output tho ? I mean at gaming load on my 2070s,not 100% ?

 

[juular]

thanks.
would getting a 850w instead of 650w improve noise output tho ? I mean at gaming load on my 2070s,not 100% ?

With gaming load - not really, you'll be hitting about 300W sustained which would be in the idle/zero RPM area anyway both on 650W and 850W SKUs.

 

[cucker tarlson]

With gaming load - not really, you'll be hitting about 300W sustained which would be in the idle/zero RPM area anyway both on 650W and 850W SKUs.

on BF whisper ? I thought it's not semi passive.

 

[juular]

on BF whisper ? I thought it's not semi passive.

It's not but fan speed at sub ~50% load is flat ~400 RPM for 550W unit and ~700 RPM for 850W unit, might vary by revision but it seems that 850W SKU is actually a bit less quiet than 550W one at idle (probably because of higher maximum RPM fan at 850W SKU which can't sustain RPM that low), so go for 650W one.

 

[cucker tarlson]

It's not but fan speed at sub ~50% load is flat ~400 RPM for 550W unit and ~700 RPM for 850W unit, might vary by revision but it seems that 850W SKU is actually a bit less quiet than 550W one at idle, so go for 650W one.

couldn't find this data.

 

[juular]

couldn't find this data.

I've linked reviews above.

 

[cucker tarlson]

thanks, you've been a lot of help.
dunno how much longer I'll stay on my sf leadex,it's good but elctronics and fans don't last forever,better be safe than sorry and do your research on a new psu before.