[OLD] PSU Tier List 3.0 (Legacy)

[LukeSavenije]

13 minutes ago, LogicWeasel said:

Was there any input on this as I was surprised to see no one reply/comment on the questions I raised in my post.  If no one cares I'll give up but I thought I raised a few valid thoughts that there are 5+ Rosewill models missing from the tier list and some look like they may be worth including.

you know... I'll look into it tomorrow for you, okay?

[DigitalONE]

15 hours ago, Stefan Payne said:

Bitfenix Formula also exist.

That is an option. Might not work too well with highest end GPUs but there are no known issues with the other units you mentioned.

which GPUs that don't work well with the Bitfenix Formula?

[Stefan Payne]

5 minutes ago, DigitalONE said:

which GPUs that don't work well with the Bitfenix Formula?

Ultra high end: nVidia x80ti, VEGA64...

 

But only on the 450 and 550W, 650 and 750W are fine.

[aldysts92]

On 5/20/2019 at 5:40 PM, LukeSavenije said:

yeah, rmx is something that should least for 7+ years, based off a solid CWT

 

and of course is haswell/kepler certified

actually I end up ordering the RM850X since I found good deal on the price and the RM650x not available lol. Is that okay if I have much more psu wattage than I needed?

[orbitalbuzzsaw]

28 minutes ago, aldysts92 said:

actually I end up ordering the RM850X since I found good deal on the price and the RM650x not available lol. Is that okay if I have much more psu wattage than I needed?

Yeah it doesn't matter

[aldysts92]

Just now, orbitalbuzzsaw said:

Yeah it doesn't matter

okay thankyou!!

[LukeSavenije]

19 minutes ago, orbitalbuzzsaw said:

Yeah it doesn't matter

 

48 minutes ago, aldysts92 said:

actually I end up ordering the RM850X since I found good deal on the price and the RM650x not available lol. Is that okay if I have much more psu wattage than I needed?

rm850x is a single rail tho, nothing too concerning if you don't push it, but you can do better if you do

[aldysts92]

4 minutes ago, LukeSavenije said:

 

rm850x is a single rail tho, nothing too concerning if you don't push it, but you can do better if you do

what does it mean actually? Pushing the single rail

[Spotty]

2 minutes ago, aldysts92 said:

what does it mean actually? Pushing the single rail

I'm also interested by what @LukeSavenije meant by that.
 

8 minutes ago, LukeSavenije said:

rm850x is a single rail tho, nothing too concerning if you don't push it

Explain?

[LukeSavenije]

2 minutes ago, aldysts92 said:

what does it mean actually? Pushing the single rail

if you had a system that would actually come close to the advertised wattage

 

but yours doesn't

[LukeSavenije]

4 minutes ago, Spotty said:

Explain?

to quote @Stefan Payne

Quote

No, it makes zero differences, if nothing GOES WRONG!

Multi Rail = Breakers in your Breaker Box.

They have the same job: Limit the max. Current to reduce potential damage.

 

What happens if a Motherboard MOSFET dies and you have a high power single Rail PSU; you can see here:

https://www.overclock.net/forum/31-power-supplies/944707-why-single-rail-not-better-than-multi-rail.html

 

THAT happens if you have 1500W+ without multiple OCP Channels.

Because its usually 120-140% until it switches off, so at worst 1500*1,4 = 2100W /12 -> 175Ampere

You know how thick the cables for 175A in real life are???

 

https://en.wikipedia.org/wiki/American_wire_gauge

 

AWG3 ~ 25mm²

 

Now go into a hardware store and look for AWG3 or 25mm² Cables!
Usually the biggest ones are 10mm²...

 

[aldysts92]

5 minutes ago, LukeSavenije said:

if you had a system that would actually come close to the advertised wattage

 

but yours doesn't

So I dont really understand what its means but is that my entire system will be okay if I use 850watt psu for the minimum recommended is 550w for Rtx 2070 and 8700k and the rest?

[LukeSavenije]

Just now, aldysts92 said:

So I dont really understand what its means but is that my entire system will be okay if I use 850watt psu for the minimum recommended is 550w for Rtx 2070 and 8700k and the rest?

as long as nothing goes wrong, yes

[aldysts92]

1 minute ago, LukeSavenije said:

as long as nothing goes wrong, yes

such as?

[LukeSavenije]

Just now, aldysts92 said:

such as?

most cPSUs have a tripping point around 125-140%, which means if you have 850 watts in a worst case scenario, you get 1190 watts of throughput. this isn't exactly the case for the rmx, because it has a lower tripping point, but it has happened that wires would literally melt from it

[Ankerson]

3 hours ago, LukeSavenije said:

What happens if a Motherboard MOSFET dies and you have a high power single Rail PSU; you can see here:

https://www.overclock.net/forum/31-power-supplies/944707-why-single-rail-not-better-than-multi-rail.html

 

 

You are using an 8 YO post on a forum about a total crap PSU that burned up a PC as an example?

 

An Ultra X4 1600W PSU, really?

 

What a surprise, it burned up a PC..... Not really.

 

Luke,

 

It's not relevant today

 

 

 

 

 

 

[LukeSavenije]

3 minutes ago, Ankerson said:

You are using an 8 YO post on a forum about a total crap PSU that burned up a PC as an example?

 

An Ultra X4 1600W PSU, really?

yeah... i guess

 

i just quote a good answer imo, ask stefan for the details

[seon123]

8 minutes ago, Ankerson said:

 

You are using an 8 YO post on a forum about a total crap PSU that burned up a PC as an example?

 

An Ultra X4 1600W PSU, really?

 

What a surprise, it burned up a PC..... Not really.

 

Luke,

 

It's not relevant today

 

 

 

 

 

 

I don't know if you have realised, but the exact same thing would have happened with an AX1600i configured in single rail, or with an EVGA T2 1600W. 

[Ankerson]

17 minutes ago, seon123 said:

I don't know if you have realised, but the exact same thing would have happened with an AX1600i configured in single rail, or with an EVGA T2 1600W. 

 

Maybe, no proof however from a reliable source and not just some post on some forum or some vague YT video.

 

It is however doubtful.

 

Both are PSU that have actually been fully tested by actual real PSU testers, full reviews and tear downs etc.

 

Both are high quality PSUs.

 

It would be nice if we could stop the drama queen stuff.

 

 

 

 

[seon123]

27 minutes ago, Ankerson said:

 

Maybe, no proof however from a reliable source and not just some post on some forum or some vague YT video.

 

It is however doubtful.

 

Both are PSU that have actually been fully tested by actual real PSU testers, full reviews and tear downs etc.

 

Both are high quality PSUs.

 

 

 

 

And the fault in the forum post was not with the PSU. It was the motherboard that failed. 

Single rail PSU: Huh, there's a strange load of 1500W on the CPU 8 pin connector. Oh well, not my problem, idc where the power goes, and it's not tripping my OPP. 

Multi rail PSU: OMG there's 1500W going down the CPU 8 pin connector, shut down!

[Ankerson]

6 minutes ago, seon123 said:

And the fault in the forum post was not with the PSU. It was the motherboard that failed. 

Single rail PSU: Huh, there's a strange load of 1500W on the CPU 8 pin connector. Oh well, not my problem, idc where the power goes, and it's not tripping my OPP. 

Multi rail PSU: OMG there's 1500W going down the CPU 8 pin connector, shut down!

 

There aren't any CPU's that will pull 1500W.

 

There also aren't any MB that have that much power going over a single 8 pin CPU connection, they all have multiple power connections as in server MB's etc.

 

So the point is irreverent, mute and whatever other words that can be used.

[seon123]

Just now, Ankerson said:

There aren't any CPU's that will pull 1500W.

That's the point. A failure in the motherboard caused it to draw a ton of power through the 8 pin connector. The PSU, being single rail, just let it happen. 

You don't seem to understand this, but single rail PSUs do not care about how the power draw is distributed. 1600W through the SATA cable? No problem. 1600W through a CPU power cable? No worries. This applies to all single rail PSUs, whether it is that 8 year old one, or if it's an AX1600i configured in single rail mode, or an EVGA T2 1600W. 

[LukeSavenije]

8 minutes ago, Ankerson said:

There aren't any CPU's that will pull 1500W.

shorts?

[Guest]

1 hour ago, LukeSavenije said:

yeah... i guess

 

i just quote a good answer imo, ask stefan for the details

I'm not going to ask Stefan because he fear mongers.

 

If single +12V rail was so "dangerous", 99% of the PSUs on the market would burst into flames.

 

[Guest]

53 minutes ago, seon123 said:

That's the point. A failure in the motherboard caused it to draw a ton of power through the 8 pin connector. The PSU, being single rail, just let it happen. 

You don't seem to understand this, but single rail PSUs do not care about how the power draw is distributed. 1600W through the SATA cable? No problem. 1600W through a CPU power cable? No worries. This applies to all single rail PSUs, whether it is that 8 year old one, or if it's an AX1600i configured in single rail mode, or an EVGA T2 1600W. 

Thing is, so many other protections will come into play even without OCP.

 

Say you have a short on a 1600W PSU.  You have SCP, for one.  You also have UVP because the resistance of the short is going to cause the voltage to drop.  You have OPP.  I mean... in 99% of cases, it's a non-issue.