Is a 1000w power supply worth it in this context?

[Automobili3XF]

5 minutes ago, Spotty said:

Not too familiar with it to be honest, I don't think Raidmax are available in Australia - or at least I've never seen one.

There's some trustworthy reviews of the unit here. (Don't have time to read through them atm, might give it a look a little later)
https://www.tomshardware.com/reviews/raidmax-monster-rx-700at-titanium-power-supply,4530.html

https://www.anandtech.com/show/10461/the-raidmax-rx700at-700w-80plus-titanium-psu-power-supply-review

 

Looking at the website you posted, the Corsair HX750/HX750i are the same price.
That unit is $855 Brazillian, or about $215 USD? That's a lot to spend on a PSU for your system. I don't think you will need to be spending that much on a PSU for your hardware.

Yeah, its pretty expensive, and about as much overkill as the other units i had listed before.

Some of the lines i'm looking at since earlier are the Cooler Master MWE Gold line, Corsair RMX and RMi lines, casually HXis that i find for a decent price.

Other than those and the TT Toughpowers (which have rather short EPS cables that get strained on my case, thus the reason why i decided to move away from my unit) i don't think there's many other interesting options, WAZ used to sell Silverstones and Seasonics with a huge mark up a few months ago, even then they weren't a good deal.

[awesomegamer919]

2 hours ago, Stefan Payne said:

I can only talk about the HXi because I have tested it.

And it switches off with VEGA.

If you are brave enough to use just one cable with the GPU. With 2 Cables I didn't have any issues under any circumstance ever.

All HXis come with at least 2 cables so that’s not a major issue, you can also just run it in SR mode.

2 hours ago, Stefan Payne said:

Actually, with modern High Transiet GPUs it can be the other way arounnd as you can have far higher multi rail OCP Current, if you combine multiple rails than you have on a Single Rail unit.

Just take a 650W Unit.

For it to be useful, you need something around 700W or so - something like 60A.

With Multi Rail, you can have far lower Current per rail but combine multiple rail to one.

So even with as low as 35A you have 70A and with 40A you have 80A.

Though that kinda goes back to the original Problem of Single Rail..

Yes and no, you *should* hit general OPP at about the same time assuming a similar design (say RMx 2018 and Whisper M) which is not affected by OCP, on units that do have SR 12V OCP then yes you are correct.

[Stefan Payne]

24 minutes ago, awesomegamer919 said:

All HXis come with at least 2 cables so that’s not a major issue, you can also just run it in SR mode.

Yeah, absolutely.

Just wanted to show that a Multi Rail PSU can save your behind from Damage.

Using a VEGA64 with only one PCIe Cable on a modular PSU is "brave".

Or rather: It will destroy the connector. The only question is when or how long it takes.

 

24 minutes ago, awesomegamer919 said:

Yes and no, you *should* hit general OPP at about the same time assuming a similar design (say RMx 2018 and Whisper M) which is not affected by OCP, on units that do have SR 12V OCP then yes you are correct.

Yes, I was talking about Single Rail units with OCP on 12V. 

 

But OCP is another safety feature if you botch the OPP setting and set it a tad too high but calculate the primary MOSFETs big enough that they don't burn - and the Transformer Saturates instead, so the 12V Rail drops.

 

Seen in the Hardwareluxx Review of a Lepa MaxBron 700W and Enermax Triathlor ECO 650W with the Lepa unit dropping the 12V to 6V at 100Amps...

 

And that shows another Problem: On some Single Rail units it can be that they don't come with UVP on 12V...

[LukeSavenije]

6 hours ago, Chevy_Monsenhor said:

About 80 Plus Platinum models, near my price range i can only find this Raidmax model, apparently built by Andyson, no idea if its good or not.

it's the only somewhat okay unit from raidmax, but for a platinum psu really not that good.

 

I'd take a good 80+ gold like the straight power 11 over it

[Matsozetex]

9 hours ago, Chevy_Monsenhor said:

I agree with that, i can't read any of those articles

What is that thing called again? Oh yeah, auto translate, I use it to read Computerbase DE articles all the time!

[Mick Naughty]

I’d get the evga or Corsair unit. 

Same price, no reason not to get it. 

 

Bought mine 5 years ago and people said it was over kill and to do an 850w unit. Which was mistake given my build. But also used it to run 4 1080’s, no didn’t have to get another psu for no reason. 

[Stefan Payne]

14 minutes ago, Mick Naughty said:

I’d get the evga or Corsair unit. 

Same price, no reason not to get it. 

There are however some serious disadvantages in getting a high wattage PSU besides the cost of purchase for it...

 

For getting a new one, it might a good idea to look at all the options and the pros and cons of that.

 

Higher Wattages often have higher fan RPM and thus noise...

 

And also the other stuff we're talking here in this thread...

 

[Mick Naughty]

23 minutes ago, Stefan Payne said:

There are however some serious disadvantages in getting a high wattage PSU besides the cost of purchase for it...

 

For getting a new one, it might a good idea to look at all the options and the pros and cons of that.

 

Higher Wattages often have higher fan RPM and thus noise...

 

And also the other stuff we're talking here in this thread...

 

Yea which was the problem getting a weaker psu. Louder fan but, I went with what people on here recommended. 

 

[Stefan Payne]

2 minutes ago, Mick Naughty said:

Yea which was the problem getting a weaker psu. Louder fan but, I went with what people on here recommended. 

No, that has NOTHING to do with Wattage, if a PSU is loud or not!

 

It has to do with the Design. And in general a random 1000W is louder than a random, good quality 550W.

[Mick Naughty]

8 minutes ago, Stefan Payne said:

No, that has NOTHING to do with Wattage, if a PSU is loud or not!

 

It has to do with the Design. And in general a random 1000W is louder than a random, good quality 550W.

Well the poor design of the 850 Corsair was louder than my 1kwatt. So it got returned. 

So a simple lesson learned. Along with wire loom inconsistencies, prefer to spend money on something better. 

 

[Stefan Payne]

19 minutes ago, Mick Naughty said:

Well the poor design of the 850 Corsair

So with "850W COrsair", I have to assume the worst.
TX850 from 2008 or so

Or maybe it was a CX850??

19 minutes ago, Mick Naughty said:

was louder than my 1kwatt. So it got returned. 

What PSU are you actually talking about?

Corsair has a ton of 850W PSU in their lineup. Without looking it up:
CX, RMx, RMi, HX, HXi, AX Titanium.

 

The lower end Corsair are pretty loud, only the higher end (RM or better) are rather quiet.

 

 

SO 2 possibilitys:

a) either you are talking about two different series

b) the RM/HX you got was defective.

 

19 minutes ago, Mick Naughty said:

So a simple lesson learned. Along with wire loom inconsistencies, prefer to spend money on something better. 

Something better ≠ moar watt.

That are actually two different things.

 

And quiet units are sadly still not that common even today...

[Mick Naughty]

7 minutes ago, Stefan Payne said:

So with "850W COrsair", I have to assume the worst.
TX850 from 2008 or so

Or maybe it was a CX850??

What PSU are you actually talking about?

Corsair has a ton of 850W PSU in their lineup. Without looking it up:
CX, RMx, RMi, HX, HXi, AX Titanium.

 

The lower end Corsair are pretty loud, only the higher end (RM or better) are rather quiet.

 

 

SO 2 possibilitys:

a) either you are talking about two different series

b) the RM/HX you got was defective.

 

Something better ≠ moar watt.

That are actually two different things.

 

And quiet units are sadly still not that common even today...

Idk what it was. I’d have to check my order history. Ordered in late 2013 or late 2014. It was recommended and idk where it falls in their line up. 

[Stefan Payne]

Just now, Mick Naughty said:

Idk what it was. I’d have to check my order history. Ordered in late 2013 or late 2014. It was recommended and idk where it falls in their line up. 

You happen to remember the color of the label?

[Mick Naughty]

18 minutes ago, Stefan Payne said:

You happen to remember the color of the label?

Hx850. 

[Automobili3XF]

1 hour ago, Mick Naughty said:

Hx850. 

Just HX, without the i at the end?

[Mick Naughty]

9 minutes ago, Chevy_Monsenhor said:

Just HX, without the i at the end?

According to the order receipt. 

[Guest]

17 hours ago, Tristerin said:

Didnt Linus himself do a video on Multi vs Single rail?

 

Saying there is actually no difference?

 

 

Yeah.  He essentially made a video of my post here:  http://www.jonnyguru.com/forums/showthread.php?3990-Single-vs-Multiple-12V-rails-The-splitting-of-the-12V-rail

 

(He did give me credit)

 

But I don't think he fully understood the context of my writings and focused on the end where I said "The bottom line is, for 99% of the folks out there single vs. multiple +12V rails is a NON ISSUE."

 

It's sort of a "if it's not broke, don't fix it" kind of feature.  If the PC is working with a single +12V rail PSU, it's highly unlikely you'll ever even need the safety feature of multiple +12V rails.

[Automobili3XF]

7 minutes ago, jonnyGURU said:

Yeah.  He essentially made a video of my post here:  http://www.jonnyguru.com/forums/showthread.php?3990-Single-vs-Multiple-12V-rails-The-splitting-of-the-12V-rail

 

(He did give me credit)

 

But I don't think he fully understood the context of my writings and focused on the end where I said "The bottom line is, for 99% of the folks out there single vs. multiple +12V rails is a NON ISSUE."

 

It's sort of a "if it's not broke, don't fix it" kind of feature.  If the PC is working with a single +12V rail PSU, it's highly unlikely you'll ever even need the safety feature of multiple +12V rails.

Bottomline is, do i need to actively seek for this feature?

And damn, JonnyGURU himself! Never knew you were in the forums, whenever i need to know a power supply is good or not the first thing i search for is one of your reviews.

[Guest]

9 minutes ago, Chevy_Monsenhor said:

Bottomline is, do i need to actively seek for this feature?

It should not be a deciding factor.

[Automobili3XF]

6 minutes ago, jonnyGURU said:

It should not be a deciding factor.

Perfect then!

And about what wattages, in the context that i mentioned right at the start of the thread, when a 1000w unit costs nearly the same or the same (in the case of the RM1000X) as a lower wattage unit of the same rating, say a CM V850 or RM650X, what would the more sensible buy?

[Guest]

7 hours ago, Chevy_Monsenhor said:

And about what wattages, in the context that i mentioned right at the start of the thread, when a 1000w unit costs nearly the same or the same (in the case of the RM1000X) as a lower wattage unit of the same rating, say a CM V850 or RM650X, what would the more sensible buy?

Well, @Stefan Payne is correct that higher wattage PSUs need higher RPM fans at higher loads and/or higher temperatures.  Typically, you accomplish this by adding windings to the motor to give it a higher maximum RPM.  Unfortunately, this means the start RPM can be higher as well.

 

This is almost always the case when someone just slaps a replacement fan in a PSU, or you have a PSU company that doesn't understand fans as well as they do PSUs.

 

As for the RMx specifically:  The starting RPM on the fan used is 645 regardless of the wattage.  This is accomplished by using a special hall sensor IC in the fan.  It makes the fan a bit more expensive, but also more predictable.

 

[Automobili3XF]

7 minutes ago, jonnyGURU said:

Well, @Stefan Payne is correct that higher wattage PSUs need higher RPM fans at higher loads and/or higher temperatures.  Typically, you accomplish this by adding windings to the motor to give it a higher maximum RPM.  Unfortunately, this means the start RPM can be higher as well.

 

This is almost always the case when someone just slaps a replacement fan in a PSU, or you have a PSU company that doesn't understand fans as well as they do PSUs.

 

As for the RMx specifically:  The starting RPM on the fan used is 645 regardless of the wattage.  This is accomplished by using a special hall sensor IC in the fan.  It makes the fan a bit more expensive, but also more predictable.

 

Outside of fan noise, which like you said isn't an issue on the RMx, anything of particular concern for the higher wattage units in this scenario? I've seen the guys mention catastrophic failures (when they happen) but that seemed to be the case on much older units than those discussed here.

 

[Stefan Payne]

13 hours ago, Chevy_Monsenhor said:

Bottomline is, do i need to actively seek for this feature?

And damn, JonnyGURU himself! Never knew you were in the forums, whenever i need to know a power supply is good or not the first thing i search for is one of your reviews.

Depends

On a 550W it doesn't matter too much

On a 1000W: Absolutely

15 hours ago, Mick Naughty said:

Hx850. 

The old Silver one??

 

Yeah, some older Corsair Units aren't particularly quiet...