Will this PSU be enough?

[Casper.SkyNet]

Hey, i'm just a Little Tinkerer and recently cut open my LowProfile Case to fit my Fullsize gpu in it...
Sound odd but im bit low on money and wanted a more compact build, in this Case is a 300watts SFX PSU from BeQuit and i was wondering if my system would be fine with it.
I looked it up on BeQuits PSU Calculator and it says 247Watts in draw.

My Specs are
Motherboard: ASRock b450m Pro4
CPU: AMD Ryzen 7 2700 STOCK
RAM: 16GB Corsair Vengance LPX CL16 3200mhz XMO2.0 DualChannell
Palit GTX 1660 Super STOCK
Storage Devices :
NoName (i guess DRAM less ) M.2 PCIe NVME
3TB Seagate HDD Baracuda + 4TB Seagate HDD (Ironwolf NAS)

I just wonder how it would Perfom and if i had to sacrifyce NDVIDA Reflex in Games such as ColdWar and MW2019...

or if i can just undervolte some stuff like the cpu and let the ram just run at the speed the bios gives me (2666mhz)...

Im sorry for the bad english im trying hard to improve my Gramar i just finished my Vocal learnings...

and thanks for any help i will get hopefully...

Big Regrets

Casper
 

[jaslion]

Yeah not that is cutting it beyond close and I would not recommend it. What 300w sfx bequiet psu is it even?

 

Psu calculators are garbage but you can indeed IF this psu can perform well up to 100% of it's rated capacity run the system but please ditch those hdds at least for a little headroom.

 

Why do you have that psu anyway? This sounds like a normal matx system with space for a normal psu.

 

Either way I'd just replace it as this is far too close for comfort here. That and the sfx power 3 series hasn't been reviewed yet so who knows how good they actually are.

[Rauten]

I would not trust a 300W PSU to be able to power that computer. It might be able to do it, but it would basically run at max, or even worse, over-spec most of the time you're gaming.

 

Keep in mind that PSUs (like anything else in the world) are not perfect, there are losses when changing voltages and switching from AC to DC.
Also, 247 Watts might be the total draw under normal conditions - it's not uncommon for CPUs and GPUs to have momentary bursts during which they demand some extra power.

 

If you want to run that system somewhat comfortably, you need to step up to 400/450W.

[Casper.SkyNet]

1 minute ago, jaslion said:

Yeah not that is cutting it beyond close and I would not recommend it. What 300w sfx bequiet psu is it even?

 

Psu calculators are garbage but you can indeed IF this psu can perform well up to 100% of it's rated capacity run the system but please ditch those hdds at least for a little headroom.

 

Why do you have that psu anyway? This sounds like a normal matx system with space for a normal psu.

 

Either way I'd just replace it as this is far too close for comfort here. That and the sfx power 3 series hasn't been reviewed yet so who knows how good they actually are.

Hey, thanks for the reply

My main PSU is rn a Thermaltake Grand Power 850Watts 80Plus Gold

The SFX is the 300Watts SFX Power 2 i says 80Plus Gold

[Casper.SkyNet]

2 minutes ago, Rauten said:

I would not trust a 300W PSU to be able to power that computer. It might be able to do it, but it would basically run at max, or even worse, over-spec most of the time you're gaming.

 

Keep in mind that PSUs (like anything else in the world) are not perfect, there are losses when changing voltages and switching from AC to DC.
Also, 247 Watts might be the total draw under normal conditions - it's not uncommon for CPUs and GPUs to have momentary bursts during which they demand some extra power.

 

If you want to run that system somewhat comfortably, you need to step up to 400/450W.

Hey, thanks for the reply

Its like, im more worried about the gpu with NVIDIA Reflex...

I had it one time that the gpu pulled almoste 300 watts...

But now while re-reading this it would be rly better to get a higher one...

[jaslion]

2 minutes ago, Casper.SkyNet said:

Hey, thanks for the reply

My main PSU is rn a Thermaltake Grand Power 850Watts 80Plus Gold

The SFX is the 300Watts SFX Power 2 i says 80Plus Gold

Why are you going for such a low power sfx psu? The grand power is actually a decent unit why do you want to replace it with something worse?

 

 

[Casper.SkyNet]

2 minutes ago, Casper.SkyNet said:

Hey, thanks for the reply

My main PSU is rn a Thermaltake Grand Power 850Watts 80Plus Gold

The SFX is the 300Watts SFX Power 2 i says 80Plus Gold

I have the sfx for my old i3 system but i sould it and swapped the cpu out, the guy doesnt wanted the i3 he wanted a xeon...
Now im stuck with the i3, the PSU and the case...

The Case got now a cutout for the gpu...

[Casper.SkyNet]

3 minutes ago, jaslion said:

Why are you going for such a low power sfx psu? The grand power is actually a decent unit why do you want to replace it with something worse?

 

 

I wanted a TINY Build, like the the small you could get with a fullsize gpu and a matx board...

i saw the Fractial Design case but its rn a hard time with money so i thought i could tinker something...

and i had to buy a new Motherboard with cpu...
I dont rly want to buy a new one... the R7 2700 is still fine for gaming in my eyes...
 

[jaslion]

Just now, Casper.SkyNet said:

I wanted a TINY Build, like the the small you could get with a fullsize gpu and a matx board...

i saw the Fractial Design case but its rn a hard time with money so i thought i could tinker something...

 

Then you need to spend the money to do it. I have the meshify c mini it's really not that much smaller than a regular atx case. A truly small case would start at a nr200p which would mean a new motherboard too. Don't waste time, money and potentially breaking your system on this.

[Casper.SkyNet]

1 minute ago, jaslion said:

Then you need to spend the money to do it. I have the meshify c mini it's really not that much smaller than a regular atx case. A truly small case would start at a nr200p which would mean a new motherboard too. Don't waste time, money and potentially breaking your system on this.

I guess i wont come around buying a new psu or a whole new case with MoBo and cpu then...

But still thanks for the help

Topic Closed i guess

[Mark Kaine]

1 hour ago, Casper.SkyNet said:

I had it one time that the gpu pulled almoste 300 watts...

Doubtful, how did you measure that?

(It has a TDP of 125w, its not going to draw a lot more, without modifications)

 

 

 

Just for example,  here's the complete power draw of my system while playing a "demanding" game, ~154w in total... most of the time pcs draw way less power than you'd think!

 

But yeah, i would have thought you can get away with 300w without overclocking,  but if you say GPU alone draws 300w, then obviously not - i still think thats impossible however (with a tdp of 125w)

[Casper.SkyNet]

11 minutes ago, Mark Kaine said:

Doubtful, how did you measure that?

(It has a TDP of 125w, its not going to draw a lot more, without modifications)

 

 

 

Just for example,  here's the complete power draw of my system while playing a "demanding" game, ~154w in total... most of the time pcs draw way less power than you'd think!

 

But yeah, i would have thought you can get away with 300w without overclocking,  but if you say GPU alone draws 300w, then obviously not - i still think thats impossible however (with a tdp of 125w)

It was maxed out and the ram was 100%
NVIDIA Reflex on Boost settings...
Maybe Afterburner just missread it idk...

And its a Palit one and as far i know it has a stock oc...

[Casper.SkyNet]

12 minutes ago, Mark Kaine said:

Doubtful, how did you measure that?

(It has a TDP of 125w, its not going to draw a lot more, without modifications)

 

 

 

Just for example,  here's the complete power draw of my system while playing a "demanding" game, ~154w in total... most of the time pcs draw way less power than you'd think!

 

But yeah, i would have thought you can get away with 300w without overclocking,  but if you say GPU alone draws 300w, then obviously not - i still think thats impossible however (with a tdp of 125w)

it says there too with the 125watts tdp but i doubt that it will be this even with nvidia reflex on...

 

[Mark Kaine]

3 minutes ago, Casper.SkyNet said:

And its a Palit one and as far i know it has a stock oc...

Yeah I checked reviews,  max power draw measured is 129w.

 

You could always just set a power limit of 90% to be safe, but even at *stock* your system wouldn't draw more than 250w or so...

 

3 minutes ago, Casper.SkyNet said:

it says there too with the 125watts tdp but i doubt that it will be this even with nvidia reflex on...

Ok, but you're wrong, this is a hard limit, its not going to draw much more, maybe 5w over... so you're looking at 130w max...

 

As long the 300w psu is a good unit and you don't overclock it should work out fine imo.

 

 

[Casper.SkyNet]

I'll just do a quick firemark and upload the power draw if i can figure out how to use nvidias own software

 

[Casper.SkyNet]

21 minutes ago, Mark Kaine said:

Yeah I checked reviews,  max power draw measured is 129w.

 

You could always just set a power limit of 90% to be safe, but even at *stock* your system wouldn't draw more than 250w or so...

 

Ok, but you're wrong, this is a hard limit, its not going to draw much more, maybe 5w over... so you're looking at 130w max...

 

As long the 300w psu is a good unit and you don't overclock it should work out fine imo.

 

 

Ok, seems like Afterburner fucked up here.

HWInfo gaved me a GPU Total Board Input 2Power (SUm) of Max 127.292Watts and average 86,171Watts n the gpu

The R7 2700  Core + SoC Power (SVI2 TFN) a MAx of 56,159 Watts
I did smth wrong, the cpu Package Power is Max 60.769 watts

idk what the parts mean that i put in "( )"...

 

Tested with FireMark 1080 Pre-set and ModernWarfare 2019

Pic are the Settings from MW 2019

1920x1080@75hz

[Mark Kaine]

2 minutes ago, Casper.SkyNet said:

Ok, seems like Afterburner fucked up here.

HWInfo gaved me a GPU Total Board Input 2Power (SUm) of Max 127.292Watts and average 86,171Watts n the gpu

The R7 2700  Core + SoC Power (SVI2 TFN) a MAx of 56,159 Watts

idk what the parts mean that i put in "( )"...

 

 

Yeah so your system draws around 200w, more realistically 250w under full load....

 

As long the psu isn't trash, 300w should be fine. 

 

Also afterburner can't measure this, software generally can't measure this accurately. 

 

The best way to measure this is a "kill-a-watt" or a psu that can do it on the hardware level.

 

 

But , generally I just don't see this system drawing more than 300 - without overclocking or heavy modifications. 

 

[Casper.SkyNet]

1 minute ago, Mark Kaine said:

Yeah so your system draws around 200w, more realistically 250w under full load....

 

As long the psu isn't trash, 300w should be fine. 

 

Also afterburner can't measure this, software generally can't measure this accurately. 

 

The best way to measure this is a "kill-a-watt" or a psu that can do it on the hardware level.

 

 

But , generally I just don't see this system drawing more than 300 - without overclocking or heavy modifications. 

 

Well... now is the question...
Would my MoBo, GPU and stuff get hurt when the psu isnt enough and just shuts down if its get like over drawn...

I checket it and the bequit sfx2. 300watt 80Plus Bronze...

I guess its fine...

[Mark Kaine]

24 minutes ago, Casper.SkyNet said:

checket it and the bequit sfx2. 300watt 80Plus Bronze...

I guess its fine...

It should be, yeah.

[Casper.SkyNet]

3 hours ago, Mark Kaine said:

It should be, yeah.

I just hope when the psu wont be enough that nothing else beside the psu will get damaged...

arnt it handeling then the same if u undervolt and do it a bit too much so the part wont even turn on or just shuts off mid usage?...