[SOLVED] Buying used psu.

[Maii]

Where i live, the psu are scarce and right now you cant find any at all. My psu broke a few days ago and i urgently need my computer operational. I have decided to buy a used psu. I wanted to ask how many watts will i need for an i7 10700k (quite overclocked) a water cooler (evga 280mm but soon will change for kraken x73), 2x sli RTX2080ti, 4 case fans and a lot of rgb strips etc plus a samsung ssd 870 evo 1tb i think it was and a cheap seagate hdd also 1tb. Also how do i test the psu to see if it works well and wont die in a week?
(Sorry for bad english not a native speaker)

 

[Tioym]

PSUs are near impossible to test you need proper equipment and I would wait a few weeks, save up annd buy a new one. It's just how it is.

 

[Maii]

PSUs are near impossible to test you need proper equipment and I would wait a few weeks, save up annd buy a new one. It's just how it is.

I dont need to save, i have the money to buy new one, its just there is no new psu sold lol. Literally all shops are out of them and say theyw ill get them only in the end of summer.

 

[Wolfshadw]

The processor is listed at 125 watts. Heavily overclocked and water cooled, figure 150 watts with overhead.
The RTX 2080Ti has two 8-pin power connectors, so you can assume between 226 and 375 watts. Times two, you're looking at a max 750 watts.
Add in all of your extras and you're probably looking at a minimum 1000 watt power supply, Safer to go with around 1200 watts.

As @Tioym states, the only way to test is with proper equipment that can stress the power supply. I don't recommend used power supplies as you have no idea how they've previously been used (or abused). That said, if you have no choice but to get a used one... good luck!

-Wolf sends

 

[refillable]

What are you trying to buy anyway?

 

[Maii]

I have managed to find a used evga 1300w g2 for a nice price from a shop or better say a pawn shop. They give some kind of warranty even tho its used so i think i will be fine. I have also found a new fsp aurum pt 1200w for twice the price, should i may be get that one instead of evga?

 

[Wolfshadw]

I have managed to find a used evga 1300w g2 for a nice price from a shop or better say a pawn shop. They give some kind of warranty even tho its used so i think i will be fine. I have also found a new fsp aurum pt 1200w for twice the price, should i may be get that one instead of evga?

If money isn't an issue, then I would definitely go with the new unit over a used one.

-Wolf sends

 

[Zerk2012]

The processor is listed at 125 watts. Heavily overclocked and water cooled, figure 150 watts with overhead.
The RTX 2080Ti has two 8-pin power connectors, so you can assume between 226 and 375 watts. Times two, you're looking at a max 750 watts.
Add in all of your extras and you're probably looking at a minimum 1000 watt power supply, Safer to go with around 1200 watts.

As @Tioym states, the only way to test is with proper equipment that can stress the power supply. I don't recommend used power supplies as you have no idea how they've previously been used (or abused). That said, if you have no choice but to get a used one... good luck!

-Wolf sends

10700K turbo power limit. 229 watts.

https://www.anandtech.com/show/15785/the-intel-comet-lake-review-skylake-we-go-again/5

 

[Zerk2012]

10700K turbo power limit. 229 watts. Probably not a realistic load but still.

https://www.anandtech.com/show/15785/the-intel-comet-lake-review-skylake-we-go-again/5

 

[Wolfshadw]

10700K turbo power limit. 229 watts.

https://www.anandtech.com/show/15785/the-intel-comet-lake-review-skylake-we-go-again/5

@Zerk2012 Thanks for that!
@Maii Still think you're safe with the new 1200 watt FSP unit.

-Wolf sends

 

[Zerk2012]

@Zerk2012 Thanks for that!
@Maii Still think you're safe with the new 1200 watt FSP unit.

-Wolf sends

ya that really cranked the voltage up to get the extra speed out of the processor. 229 might not be a real life number under normal use but still.

 

[geofelt]

The wattage you need is largely determined by the graphics configuration.
With two RTX2080ti cards, this chart indicates 900w.

http://www.realhardtechx.com/index_archivos/Page362.htm
Each RTX2080ti with two 8 pin connectors can can draw up to 375w

You might go stronger if your cards need more than two 8 pin connectors each
or if your overclocks are excessive.
It is not wrong to overprovision a psu.
It will only consume the wattage demanded of it.

The EVGA G2 is of excellent quality and should be a good buy if it is working properly.
One wonders why it was sold in the first place.

 

[Wolfshadw]

Each RTX2080ti with two 8 pin connectors can can draw up to 225w

The 8-pin PCIE power delivers up to 150 watts. From your link:

Many present graphics cards include a combination of six-pin (75W) or eight-pin (150W) connectors since the remainder of the graphics card’s TDP thus needs to come from its 6-pin or 8-pin PCI-E connectors.

Two of them, plus 75 watts from the PCI-Ex16 slot totals 375 watts.
Two cards in SLI means up to a possible 750 watts.

NVidia specifications for the RTX 2080 Ti states a Graphics Card Power of 250 watts. Not sure I trust that as one 8-pin and one 6-pin would be sufficient for that.

-Wolf sends

 

[geofelt]

# wolfshadow. My math needs to be corrected. done..

 

[Maii]

ok i decided to go with the brand new fsp aurum pt 1200w, and corrcect me if im wrong, does that mean i wont be able to overclock my 10700k to the speeds 10900k can achieve since i heard 10900k consumes stupid amount of power. Or are 10700k and 10900k identical except 10900k has 2 more cores? (I dont need 2 more cores so i went with 10700k for the absolute best performance but if 10900k has faster clock speeds and is better i will go change my unopened 10700k for 10900k

 

[Maii]

ok i decided to go with the brand new fsp aurum pt 1200w, and corrcect me if im wrong, does that mean i wont be able to overclock my 10700k to the speeds 10900k can achieve since i heard 10900k consumes stupid amount of power. Or are 10700k and 10900k identical except 10900k has 2 more cores? (I dont need 2 more cores so i went with 10700k for the absolute best performance but if 10900k has faster clock speeds and is better i will go change my unopened 10700k for 10900k

Also will an evga 280mm cooler be enough for it or should i get smth like nzxt x72/73?

 

[refillable]

Also will an evga 280mm cooler be enough for it or should i get smth like nzxt x72/73?

It should be enough. I doubt your system will get above 1000W even when overclocked. Not even the peak power consumption.