80 plus psu enough for RTX 3080?

[Niel_A]

Hi

 

I bought an RTX 3080 and need to upgrade my psu.

I'm currently debating between a Cooler Master MWE White V2, 750W (€65) and a Corsair CX750M (€94).

Is the €29 difference actually worth the upgrade from 80 plus to 80 plus bronze?

 

Do I even need a 750W psu for a RTX 3080 and 3700x or is it overkill?

Thanks for the help

Niel

[Enzo1001]

1 minute ago, Niel_A said:

Hi

 

I bought an RTX 3080 and need to upgrade my psu.

I'm currently debating between a Cooler Master MWE White V2, 750W (€65) and a Corsair CX750M (€94).

Is the €29 difference actually worth the upgrade from 80 plus to 80 plus bronze?

 

Do I even need a 750W psu for a RTX 3080 and 3700x or is it overkill?

Thanks for the help

Niel

Yes you need one, and i would even reccommande getting a better one on this kind of hardware. Why not go 80+ Gold?

[Niel_A]

1 minute ago, Enzo1001 said:

Yes you need one, and i would even reccommande getting a better one on this kind of hardware. Why not go 80+ Gold?

Thanks for your reply.

 

As far as I understand these ratings only reduce the power consumption from the wall and don't affect the power they supply to the system. So is it worth it to pay an extra €13 for a Corsair RM750 (2019) to have a gold rating?

[SupaKomputa]

Why 750? Why not CX650M or the non M (cheaper). It should be enough for 1 3080.

[Fasauceome]

The power supply rating isn't what affects the PSU compatibility with the 3080. Please refer to the PSU tier list for a ranking of PSU quality. I recommend tier A for the RTX 3080 due to the demanding nature of the card, and 850 watts due to the problems it has on lower wattage power supplies that would otherwise be appropriate for it.

 

The CXM is by all means a decent budget power supply, but you're clearly not building a low end or mid range system, not with the 3080.

[Niel_A]

4 minutes ago, Fasauceome said:

The power supply rating isn't what affects the PSU compatibility with the 3080. Please refer to the PSU tier list for a ranking of PSU quality. I recommend tier A for the RTX 3080 due to the demanding nature of the card, and 850 watts due to the problems it has on lower wattage power supplies that would otherwise be appropriate for it.

 

The CXM is by all means a decent budget power supply, but you're clearly not building a low end or mid range system, not with the 3080.

So if the rating doesn't affect it then why does it have to be A tier?

[Niel_A]

10 minutes ago, SupaKomputa said:

Why 750? Why not CX650M or the non M (cheaper). It should be enough for 1 3080.

I don't know, there seems to be no consensus about what an 3080 actually needs.

[Fasauceome]

1 minute ago, Niel_A said:

So if the rating doesn't affect it then why does it have to be A tier?

The efficiency rating is what I was referring to. There are PSUs with 80+ gold that are better than some 80+ platinum units

[Niel_A]

1 minute ago, Fasauceome said:

The efficiency rating is what I was referring to. There are PSUs with 80+ gold that are better than some 80+ platinum units

What other specs than efficiency make them better?

[Fasauceome]

3 minutes ago, Niel_A said:

What other specs than efficiency make them better?

Protections, voltage control, fan quality, and tons more things. There is a link on the tier list itself that takes you to a Google sheets page with the list's criteria for each tier.

[Niel_A]

5 minutes ago, Fasauceome said:

Protections, voltage control, fan quality, and tons more things. There is a link on the tier list itself that takes you to a Google sheets page with the list's criteria for each tier.

Okay so that brings me to something like a Corsair RM850 at €130 which is fine but is double the price of Cooler Master MWE White V2, 750W.

Is it worth it?

 

If I were to use the cheaper one how would this translate in gaming performance?

[Fasauceome]

11 minutes ago, Niel_A said:

If I were to use the cheaper one how would this translate in gaming performance?

it's not a matter of gaming performance, it's about stability and longevity. your FPS won't be affected but you could see crashes.

[Niel_A]

1 minute ago, Fasauceome said:

it's not a matter of gaming performance, it's about stability and longevity. your FPS won't be affected but you could see crashes.

I see. So is there going to be a significant difference in amount of crashes?

[Fasauceome]

2 minutes ago, Niel_A said:

I see. So is there going to be a significant difference in amount of crashes?

yes, it's likely to be the case.

[Niel_A]

1 minute ago, Fasauceome said:

yes, it's likely to be the case.

Interesting! Thanks for the help!
So the psu quality doesn't actually affect fps in any way? Like could there be more stutters with a budget psu?

[akio123008]

6 minutes ago, Niel_A said:

Like could there be more stutters with a budget psu?

That's actually a fairly complicated question, but in this specific case, no I don't think so.

[Tan3l6]

  

9 minutes ago, Niel_A said:

Interesting! Thanks for the help!
So the psu quality doesn't actually affect fps in any way? Like could there be more stutters with a budget psu?

Nope. It's like the heart of the system - system either works or not. If a low budget PSU "dies" under load, it might take some components with it.

[Niel_A]

1 minute ago, akio123008 said:

That's actually a fairly complicated question, but in this specific case, no I don't think so.

Well now I'm thinking to just go for the cheapest option and if I experience crashes, I just send it back and buy a better one.

[akio123008]

Just now, Niel_A said:

Well now I'm thinking to just go for the cheapest option and if I experience crashes, I just send it back and buy 

I woudn't do that. Get something good right away, it's the better option.

[Ankerson]

1 minute ago, Niel_A said:

Well now I'm thinking to just go for the cheapest option and if I experience crashes, I just send it back and buy a better one.

 

That would be a mistake.

 

You would be better off not even getting a 3080 at all, or not upgrading period if that's what you are going to do.

 

These people don't know what these cards actually take because they don't own one. Or how much power these cards really do pull and about the transient power spikes.

 

Just get the RM 850 and be done with it.

[Niel_A]

2 minutes ago, Ankerson said:

 

That would be a mistake.

 

You would be better off not even getting a 3080 at all, or not upgrading period if that's what you are going to do.

 

These people don't know what these cards actually take because they don't own one. Or how much power these cards really do pull and about the transient power spikes.

 

Just get the RM 850 and be done with it.

Is the psu quality more important with the new generation of gpu's than it has been with previous generations?

[Ankerson]

Just now, Niel_A said:

Is the psu quality more important with the new generation of gpu's than it has been with previous generations?

 

OH YEAH...

 

MUCH more so, these new cards are no joke, stable power and quality is the key here, and enough PSU wattage in the 1st place.

 

850W would be better so yeah the RM 850 will be fine.

[Niel_A]

Just now, Ankerson said:

 

OH YEAH...

 

MUCH more so, these new cards are no joke, stable power and quality is the key here, and enough PSU wattage in the 1st place.

 

850W would be better so yeah the RM 850 will be fine.

Okay that might explain some of my confusion, in the past bronze was just fine.

Thanks, I will just go for the safest bet then.

[SavageNeo]

Go for the RM. How much is the rmx? it has more quiet fan so rmx750w would be wiser noice wise.

 

Effiency and brand is not quality. LLC and DC-DC with decent voltage regulations and protections tell a lot about quality. There is ripple and nocie  factors too + others that i did not think of.

[Niel_A]

19 minutes ago, SavageNeo said:

Go for the RM. How much is the rmx? it has more quiet fan so rmx750w would be wiser noice wise.

 

Effiency and brand is not quality. LLC and DC-DC with decent voltage regulations and protections tell a lot about quality. There is ripple and nocie  factors too + others that i did not think of.

RMX is another €20 more expensive than just a RM one.
The RMX750 is the same price as the RM850,€130.