Is 750W enought? Best short High power PSU

[karl_azytzeen]

Hi all.

Coming from here: Problem with my PSU, shut down after 10min of game

 

I had a heavily overclocked system, and my actual PSU is almost dead.

 

I touhgt that 750W (Seasonic Prime Ultra Platinum / Titanium)  was enought, but i look at the seasonic calculator and it says i need more than 850W. I readed a few times too that is best to get Good PSU of the last year than the Best of the past iteration, is that true (talking about Seasonic non-ultra Prime Gold/Plat/Tit). Im open to any other brand, just had Seasonic as reference for the best regularity psu maker.

With a power clamp i measured 540W in gaming in the PSU cable (but not measured under full synthetic load)

 

Im constrained to a PSU no longer than 160mm (fits thigt, but fits, 150mm would be even better).

Also I dont discard to do an SLI in the future, so headroom is a must.

I dont mind if it is semi-modular.

I can live with non braided cables.

If nothing fits in what i need i dont mind to mod the case and use a PSU extension bracket like the one from Lian-li (but tht is the last option).

Down the line im just here for the best performance/quality psu for my rig, i and i dont mind to spend the money here.

 

Sistem Specs

Spoiler

i7 8700k @ 5250

Gigabyte 980 ti XG MuMod @1610/2128

Maximus X Formula (with latest avaible BIOS)

4x8Gb Gskill TridentZ 3600 CL16

960pro 512Gb, 3xSata SSD and 4x3,5HDD @ 5.4 and 5,9k rpm

Cooled CPU, VRM and VGA under water loop. EKglass 140ml with D5. EK 10/13 tubing with compression fittings. 2x HWLabs GTX280 rad (one is push and pull, the other has only 3 fans) and a HWLabs GTX420 in push. All fans are Corsair ML140 except one noctua redux 140mm 1500rpm and noctua ippc2000 in the rear exhaust.

The case is a Corsair 750D Airflow modded to fit the rads inside.

 

Thank you very much

 

PS: Corsair AX860 (i'm runing it borrowed) coil whine is driving me crazy, so if the issue is still not solved i will avoid it completly. 

 

EDIT:

Finally I ordered the Seasonic Plus Gold 1kW.

Its whisper quiet and has zero whine. Voltage across all lines is a lot more stable than before.

I would like to get the EVGA G3 for its amazing stability, but not having the 1kW avaible and being loud as hell...

 

This is the summ chart i did. I hope someone finds it useful.

 

 

Edited January 2, 2019 by karl_azytzeen
Add table

[Jurrunio]

Go 1000W if you want to use SLI. SLI only make sense with the fastest card, which means high power draw. 2080ti for example has a max power limit of 320w while 8700k at 14V draws about 250w.

[17030644]

psu calculators overestimate by a ton no wonder it says you need 850W

[17030644]

23 minutes ago, karl_azytzeen said:

. I had read a few times too that is best to get Good PSU fo the last year than the Best of the past iteration, is that true

2

no, it depends

 

26 minutes ago, karl_azytzeen said:

Im open to any other brand, just had Seasonic as reference for the best psu regularity psu maker.

 

5

stop thinking seasonic is magically better than other psus just because it's seasonic

 

seasonic uses the same parts and processes as the other high-end psus

 

and the most reputable psus aren't even seasonic. (most of them are made by servers oems)

 

29 minutes ago, karl_azytzeen said:

 

With a power clamp i measured 540W in gaming in the PSU cable (but not measured under full synthetic load)

 

2

that makes more sense

 

29 minutes ago, karl_azytzeen said:

 

Im constrined to a PSU no longer that 160mm (fits thigtly, but fits, 150mm would be even better).

Also I dont discard to do an SLI in the future, so headroom is a must.

I dont midn if it is semi-modular.

I can live with non braided cables.

If nothing fits in what i need i dont mind to mod the case and use a PSU extension bracket like the one from Lian-li (but tht is the last option).

 

14

go with corsair RMi, HX 2017, HXi, AXi, bitfenix formula, whisper M, be quiet straight power 11/dark power 11

 

[Hip]

That is totally enough. You don't need that 850W.  Oh I didn't see the 10x fans. but 850W should be fine. No more needed.

[karl_azytzeen]

2 hours ago, 17030644 said:

no, it depends

 

stop thinking seasonic is magically better than other psus just because it's seasonic

 

seasonic uses the same parts and processes as the other high-end psus

 

and the most reputable psus aren't even seasonic. (most of them are made by servers oems)

 

that makes more sense

 

go with corsair RMi, HX 2017, HXi, AXi, bitfenix formula, whisper M, be quiet straight power 11/dark power 11

 

Corsair HX/HXi/RMi 750-850W ->180mm long (AX/AXi ->i dont even consider them for the coil whinning)

Be quiet Straight power / dark power -> 170mm long

Bitfenix formula M / Whisper M -> fits

 

Any other options?

 

Quote

Oh I didn't see the 10x fans. but 850W should be fine. No more needed.

In fact, 11 (9 ML140+Noctua P14S-1500+ IPPC2000) and a D5 G2 Waterpump

 

Quote

and the most reputable psus aren't even seasonic. (most of them are made by servers oems)

PS: i had a supermicro PWS-865-PQ that i get from a dual xeon server (made by Delta?) is that what you are talking about?

[17030644]

6 minutes ago, karl_azytzeen said:

Corsair HX/HXi/RMi 750-850W ->180mm long (AX/AXi ->i dont even consider them for the coil whinning)

 

 

are you sure the axi causes coil whine?

 

6 minutes ago, karl_azytzeen said:

 

Any other options?

 

nzxt E series

 

look for the 650W versions those should be 160mm long

[karl_azytzeen]

13 minutes ago, 17030644 said:

are you sure the axi causes coil whine?

 

nzxt E series

 

look for the 650W versions those should be 160mm long

In the other (Corsair, be quiet, seasonic) i was looking for +750W.

The NZXT E865 fits, i will look for reviews

 

Thank you!

I had the AX860 runing just here (out of the case) and every mouse scroll causes whinings and electric buzzs... not even talk about open a game without the isolating headset.

[aezakmi]

Avoid NZXT, it's junk and overpriced

 

EVGA 850 G3

imo a G2 would be way better but it's too big

[seon123]

6 minutes ago, aezakmi said:

Avoid NZXT, it's junk and overpriced

It's a Focus Plus with software monitoring. How is that crap?

6 minutes ago, aezakmi said:

 EVGA 850 G3

That's a loud potential fire hazard. 

[karl_azytzeen]

6 minutes ago, aezakmi said:

Avoid NZXT, it's junk and overpriced

 

EVGA 850 G3

imo a G2 would be way better but it's too big

I heard good things about G2, but as you said, the are BIG!

I dont want suffer from the same mistake i did, i get the Silverstone Strider, after reading good reviews about it, and i didnt see that they were rather old.

[karl_azytzeen]

1 minute ago, seon123 said:

It's a Focus Plus with software monitoring. How is that crap?

That's a loud potential fire hazard. 

Then why i shoundt directly get the Seasonic Focus?

What is the issue on the G3?

[seon123]

1 minute ago, karl_azytzeen said:

Then why i shoundt directly get the Seasonic Focus?

What is the issue on the G3?

Some versions of the Focus Plus have issues with the transient spikes of some high power GPUs. It's not that quiet. Seasonic has had some issues with cold solder. The fan is not very good. And it only has a single rail on 12V. 

The G3 has issues with this OPP and OTP. IE it does not safely shut down when overloaded or when the internal temperature gets too hot. And it's among the loudest PSUs you can get. 

[karl_azytzeen]

2 minutes ago, seon123 said:

Some versions of the Focus Plus have issues with the transient spikes of some high power GPUs. It's not that quiet. Seasonic has had some issues with cold solder. The fan is not very good. And it only has a single rail on 12V. 

The G3 has issues with this OPP and OTP. IE it does not safely shut down when overloaded or when the internal temperature gets too hot. And it's among the loudest PSUs you can get. 

Thank you Sir!

Thoose are REALLY IMPORTANT facts to know before any purchase.

[seon123]

1 minute ago, karl_azytzeen said:

Thank you Sir!

Thoose are REALLY IMPORTANT facts to know before any purchase.

Those issues don't necessarily make a PSU bad. How relevant any of the issues are varies. Both are good PSUs. I just wouldn't necessarily recommend them if there are better options available. 

[aezakmi]

8 minutes ago, seon123 said:

It's a Focus Plus with software monitoring. How is that crap?

That's a loud potential fire hazard. 

cheap $5 ball fan on a $200 unit, loose connectors, low quality paint tbh its users only pay those premium prices for the brand not for the product itself, kinda like apple fanboys buying the same phone with more RAM every year

 

eh, I've seen worse than the G3.

a "PSU" that consisted of two boards and a fan screwed to a wood plank sharing connectors to power a 290x crossfire. doubt a G3 is worse than that, btw it still works, smells like boiling engine oil when gaming but somehow works and hasn't exploded or destroyed the computer after ~6 years of constant (ab)use

[Spotty]

4 hours ago, Jurrunio said:

8700k at 14V draws about 250w.

At 50GHz! /s

 

4 hours ago, karl_azytzeen said:

Coming from here: Problem with my PSU, shut down after 10min of game

 

I had a heavily overclocked system, and my actual PSU is almost dead.

 

 

5.25GHz at 1.36V on an 8700K? Is that the overclock you're running? No wonder the thing is shutting down under load. Unless you have a golden chip that makes Jayz2Cents jealous, there's no way that thing is stable.
Try removing or dialling back the CPU overclock before you spend money on a new PSU.

[karl_azytzeen]

When I started to see issues on the PSU i diabled CPU OC, and set default clocks, and on the GPU too.

Yes i had a lot of luck in the Silicon lottery. That voltages causes P95 to report error in 2 cores after half an hour or so, but on everyday use i had never seen any program crash or hang. At 1.4 it was stable for hours but it was too high to be comfortable.

 

But thas was not about OC!

 

Any other PSU??

[Stefan Payne]

5 hours ago, karl_azytzeen said:

Coming from here: Problem with my PSU, shut down after 10min of game

If it is the PSU, look at the Seasonic statement about "problematic Graphics cards", where they "forgot" to mention like 2/3 or more of GPU that are affected by that.

 

5 hours ago, karl_azytzeen said:

I touhgt that 750W (Seasonic Prime Ultra Platinum / Titanium)  was enought,

It is. Your PSU is broken or has other issues.

5 hours ago, karl_azytzeen said:

but i look at the seasonic calculator and it says i need more than 850W.

urgh, that outervision bullshit again, that makes money by selling PSU to you.

Its utter shit and totally wrong.

So you should get a Powermeter. Even a crappy one with 20% precision at least gives you an idea how much your PC really consumes.

 

5 hours ago, karl_azytzeen said:

I readed a few times too that is best to get Good PSU of the last year than the Best of the past iteration, is that true

What???
I don't understand...

 

5 hours ago, karl_azytzeen said:

Im open to any other brand,

be quiet Straight Power 11, Bitfenix Formula, Whisper M, Cougar GX-F

[Stefan Payne]

4 hours ago, Hip said:

Oh I didn't see the 10x fans.

normal consumer fans are like 0,5-2W per piece.

So at worst like 20W. Not really something worth thinking about.

In a Server with their 1-2Ampere Fans, it might be different...

[17030644]

11 minutes ago, Stefan Payne said:

If it is the PSU, look at the Seasonic statement about "problematic Graphics cards", where they "forgot" to mention like 2/3 or more of GPU that are affected by that.

 

I thought that only applied to the early focus+, not the seasonic PRIME models

[Guest]

22 hours ago, karl_azytzeen said:

 

PS: Corsair AX860 (i'm runing it borrowed) coil whine is driving me crazy, so if the issue is still not solved i will avoid it completly. 

While Seasonic made PSUs tend to be notorious for noise, it sounds like yours is unusually loud.  You should consider just RMAing it.

 

A better alternative is the RM850x.  It's actually a PSU with better build consistency.  Not as efficient, but you'll probably be overall happier with it.

[Rexper]

4 hours ago, jonnyGURU said:

It's actually a PSU with better build consistency

Do you mean better build quality, or more consistent manufacturing?

[Guest]

1 hour ago, Rexper said:

Do you mean better build quality, or more consistent manufacturing?

Little of both. 

[Stefan Payne]

1 hour ago, jonnyGURU said:

Little of both. 

So you'd rather work with XHY or Solytech then?