PSU help / sugestions

[xFetusx]

I need to buy a new PSU asap . My requirements are  850 to 1000 watts,  semi- or fully modular only with 4 or more gpu power cables due to my gpus needing a 6 + 8 pin (yes i have Radeon gpus ) , I also require something with fairly long cables , i have a massive full atx case to run them through  . Any suggestions would be greatly appreciated as i need to buy one in the next day or 3 . i DO NOT want cheapo psu either , price isn't really an issue , I wont pay more then i think i should or pay for a name .   Thanks in advance .

[Valkyrie Lenneth]

who in the heck needs 850-1000watt psu these days mining?

[xFetusx]

thanks for the useless reply bud

[Cameron_99]

EVGA is a good psu. you can pick your part then if you need special cabling you can go to cable mod.com

[Valkyrie Lenneth]

Just now, xFetusx said:

thanks for the useless reply bud

np lol

 

[seon123]

Which parts are you running? Unless it's an HEDT platform and multiple GPUs, I doubt it'll draw that much

The Corsair RM850x has 6 PCIe connectors. 

[xFetusx]

i was thinking about that (cable mods ) but i just want to buy one item and go with it  if at all possible . right now im looking at the EVGA superNOVA and a thermaltake toughpower .

[seon123]

Just now, xFetusx said:

i was thinking about that (cable mods ) but i just want to buy one item and go with it  if at all possible . right now im looking at the EVGA superNOVA and a thermaltake toughpower .

Which EVGA Supernova? 

Which Thermaltake Toughpower? 

Both have lots of models under those names

[xFetusx]

after my calculations it hits the 799 watt mark and i plan on adding more ssd's or large capacity spinners . also i run a lot of other perifs that power off my usb . and i would rather not have to keep upgrading psu's so its a go big or go home .

 

[Nite-Ninja]

I have an EVGA Supernova 1KW PSU with the 10 year warranty.

 

"EVGA SuperNOVA 1000 P2 220-P2-1000-XR 80+ PLATINUM 1000W Fully Modular Power Supply"

 

I've since then migrated it across 3 builds. Pretty much the last PSU you'll ever need for 10 years thanks to the warranty.

[kelvinhall05]

6 minutes ago, xFetusx said:

thanks for the useless reply bud

It wasn't useless. Tell me your parts, maybe they only need 600W.

[xFetusx]

this one https://www.newegg.ca/Product/Product.aspx?Item=N82E16817153365

[xFetusx]

1 minute ago, Nite-Ninja said:

I have an EVGA Supernova 1KW PSU with the 10 year warranty.

 

"EVGA SuperNOVA 1000 P2 220-P2-1000-XR 80+ PLATINUM 1000W Fully Modular Power Supply"

 

I've since then migrated it across 3 builds. Pretty much the last PSU you'll ever need for 10 years thanks to the warranty.

thats the evga one im looking at too

[xFetusx]

13 minutes ago, Nite-Ninja said:

I have an EVGA Supernova 1KW PSU with the 10 year warranty.

 

"EVGA SuperNOVA 1000 P2 220-P2-1000-XR 80+ PLATINUM 1000W Fully Modular Power Supply"

 

I've since then migrated it across 3 builds. Pretty much the last PSU you'll ever need for 10 years thanks to the warranty.

Thanks for the tip . i might grab it and it's on sale too @ Canada Computers for $259  - $40 reg price plus a 20$ mail in rebate crap to make it $239 ..i

[Stefan Payne]

50 minutes ago, xFetusx said:

after my calculations it hits the 799 watt mark

Show your calculations!
You wouldn't be the first to grossly overestimate the power consumption of your components.

 

What do you think, will a 400W PSU be enough for an i7-3930K and an OC RX480??

a) Yes
b) Yeah, but cuttin it close

c) No, that system consumes way too much

 

But remember: 
Most 1000W PSU are rather loud as soon as the fan starts spinning!

ANd pls answer the question about your components...

[STRMfrmXMN]

1 minute ago, Stefan Payne said:

Show your calculations!
You wouldn't be the first to grossly overestimate the power consumption of your components.

 

What do you think, will a 400W PSU be enough for an i7-3930K and an OC RX480??

a) Yes
b) Yeah, but cuttin it close

c) No, that system consumes way too much

I already know the answer so I won't cheat

 

34 minutes ago, xFetusx said:

Thanks for the tip . i might grab it and it's on sale too @ Canada Computers for $259  - $40 reg price plus a 20$ mail in rebate crap to make it $239 ..i

What hardware are you powering?

[Nite-Ninja]

EVGA supernova PSU I mentioned has an oversized fan and an Eco mode so it's a very quiet unit even when at full load which my old crossfire fury setup managed to do on it.

[Stefan Payne]

11 minutes ago, Nite-Ninja said:

EVGA supernova PSU I mentioned has an oversized fan

Oh yeah?!

 

See the Problem?
So size of the fan has NOTHING to do with the noise of a PSU. Everything else has. Fansize doesn't matter much (at least in the range of 92-140mm), as you can see the 120mm fan seems quite good and blows to where it should...

Quote

and an Eco mode

irrelevant because it can be quiet with or without it.

In 9 out of 10 cases a semi fanless mode is just a Marketing Point that doesn't give the user any advantage. It kills the fan faster, heats up the PSU way more than needed (around 20K or so) but as someone from some Company some time ago said at the time of the Corsair GS or something like that:

"We don't need a good quality fan, we have semi fanless!!11"

And a good fan is really expensive - it costs more than a shitty low end unit.

While a shitty fan cost next to nothing.

And a decent one is somewhere inbetween....

 

Quote

so it's a very quiet unit even when at full load which my old crossfire fury setup managed to do on it.

Ähm, no?!

http://www.tweakpc.de/hardware/tests/netzteile/superflower_leadex_ii/s08.php

(example of a similar unit, in this case Leadex II unit).

 

 

Again, how loud a PSU gets has nothing to do with the fan size!

A bigger fan can be worse than a smaller one!

Because the whole PSU isn't a heatsink, only some specific parts get hot.

You might see it if you click this link and scroll down:

https://www.computerbase.de/2014-08/netzteile-500-550-watt-vergleich/8/

 

You see that there is an area that gets hot - primary/PFC heatsink, transformer and +12V rectification. Rest doesn't get hot. 

So you want the airflow in the areas that get hot and not everywhere else.

That is why so many PSU with 120mm fan have an off center fan.

 

And that is why 135/140mm fans are just bullshit in 9 out of 10 cases and a 120mm and possibly even smaller fan would provide you with a lower noise than those big fans.

[Nite-Ninja]

This also assumes how close to target wattage you're going to go anyway. If you get a 600w PSU and you're pushing the maximum all the time, it'll notably run louder and hotter than if you get a larger unit.

 

And it's common sense that larger fans spin at a lower RPM to move the same CFM of air. Try to get the same airflow from a 120mm fan at the same dBa of a 160mm fan. It can't be done, especially if you're pushing close to the theoretical maximum of the unit. And many PSU fans are generally static pressure fans because many of them need to push around the anti conducive shield over the central capacitor.

 

 I do agree on one thing however, this "ECO" mode is garbage, it actually adds audible coil whine and seems more like a gimmick than anything.

 

I've had my unit for going on 3 years, in various machines, and owned other ones in the past (including the mistake of using an Antec HCG 750 that fried a SSD and a GPU), I'm quite informed in my decision in recommending the 1KW Supernova, for the 80+ Platinum, larger fan, 10 year warranty, and future upgradeability. But the $200 price tag may not be for everyone.

[Stefan Payne]

1 hour ago, Nite-Ninja said:

This also assumes how close to target wattage you're going to go anyway. If you get a 600w PSU and you're pushing the maximum all the time, it'll notably run louder and hotter than if you get a larger unit.

How is that possible if we are talking about the same efficiency when the load is the same and the heatsinks as well?!

It's not...

That's the point. You just put a faster fan inside.

Here is Proof:
https://www.hartware.de/2012/11/27/be-quiet-dark-power-pro-10-650w/8/

 

You see, 550W at 100% has lower fan RPM than 650W at 10%...

 

 

Quote

And it's common sense that larger fans spin at a lower RPM to move the same CFM of air. Try to get the same airflow from a 120mm fan at the same dBa of a 160mm fan. It can't be done, especially if you're pushing close to the theoretical maximum of the unit.

You assume that the PSU is a heatsink and the whole area needs heatsinking - wich is false.

You need the airflow at a specific area and not everything needs to be cooled.

Just take a look at the pictures!

They clearly show that with the smaller fan, the hot things are in an area where the airflow of the fan is the highest,

While the 140mm fan blows everywhere just not where you need it.

 

 

Also you need the static pressure because the fan is blowing against a wall (wich is why 80mm fans or 2x80mm fans aren't that bad)....

 

Quote

And many PSU fans are generally static pressure fans because many of them need to push around the anti conducive shield over the central capacitor.

What are you talking about?

Take a look at the pictures I've linked to in my previous post. There you see a heat image of a Corsair RM.

 

THe 'central capacitor' (I think you mean that 400V primary thing) is almost freezing in those pics...

 

Quote

 I do agree on one thing however, this "ECO" mode is garbage, it actually adds audible coil whine and seems more like a gimmick than anything.

The coil whine has nothing to do with the semi fanless mode.

YOu just notice it because there is no fan...

 

[Nite-Ninja]

I'll go ahead and drop this in here.

[seon123]

1 hour ago, Nite-Ninja said:

I'll go ahead and drop this in here.

The cringe... The only parts that would actually help are "ask the forum", and look at reviews. PSU calculators are crap

[Stefan Payne]

7 hours ago, Nite-Ninja said:

I'll go ahead and drop this in here.

And, what do you want to say?
 

That I'm the Ben Shapiro of PSU discussions??