Is a 650 watt PSU enough for a 564 watt system power

[ArasanChrisGaming]

I’ve heard a lot of differing opinions but if my system power total is 564 watts will there be any problems running a 650 watt power supply.

[minibois]

1 minute ago, ArasanChrisGaming said:

I’ve heard a lot of differing opinions but if my system power total is 564 watts will there be any problems running a 650 watt power supply.

Without knowing the PC parts you're using, including the PC this is impossible to judge.

Please list all the PC parts you're using, or at the very least the CPU, videocard and exact PSU brand+model.

[BlazerBuddy]

1 minute ago, ArasanChrisGaming said:

I’ve heard a lot of differing opinions but if my system power total is 564 watts will there be any problems running a 650 watt power supply.

What power supply is it?? 
What 80 plus efficiency is it??

[Cyracus]

2 minutes ago, ArasanChrisGaming said:

if my system power total is 564 watts

most power calculators over estimate in reality you'd need a setup like a OC'd 10900k and 2080ti for that kind of power draw

[Ankerson]

29 minutes ago, Cyracus said:

most power calculators over estimate in reality you'd need a setup like a OC'd 10900k and 2080ti for that kind of power draw

 

Pretty much, my gaming load is 550W+ and that's with a 9900K and 2080Ti.... So figure a little to a lot more with a 10900K depending on the OC...

 

The Calculators do add some buffer in for safety, it's not too bad normally percentage wise depending on which one it is.. Saw one that was actually under what my system really pulls so..... Think that one used straight TDP which is a mistake from the start.

[Ankerson]

49 minutes ago, ArasanChrisGaming said:

I’ve heard a lot of differing opinions but if my system power total is 564 watts will there be any problems running a 650 watt power supply.

 

If the machine pulls 564W then a 650W PSU isn't enough... Period.

 

Not enough headroom.. That would be an 87% load on a 650W PSU...

 

Or 75% load on a 750W PSU.

 

Or 67% load on a 850W PSU.

 

So take a look at the reviews or the efficiency charts from the makers for the PSUs you are looking at and that should tell you were the PSU will work at it's best.

 

 

 

 

[Cyracus]

10 minutes ago, Ankerson said:

If the machine pulls 564W then a 650W PSU isn't enough... Period.

 

Not enough headroom.. That would be an 87% load on a 650W PSU...

depends on if that 650w is continuous or peak delivery, if that's its continuous then it's fine. Peak, probably not

[Ankerson]

24 minutes ago, Cyracus said:

depends on if that 650w is continuous or peak delivery, if that's its continuous then it's fine. Peak, probably not

 

If some unaware person wanted to run their PSU at 87%+ all the time... 

 

Not recommended period no matter what PSU it is. And there is the temperature management to worry about running a PSU that hard all the time.. Now if the PC is in a 20C or colder room with cold air blowing in the case then yeah, maybe..... (Like a server room as an example)

 

@jonnyGURU

[Cyracus]

59 minutes ago, Ankerson said:

If some unaware person wanted to run their PSU at 87%+ all the time...

If it's rated for 650w continuous it is designed so you can put a stable 650w load on it 24/7 without safety concerns, you do get ~14w(+/-5) more waste heat from the efficiency loss but for a system with peak a peak draw of 564w is fine.
    Peak 650w tends to work out to like 500w constant, on which a 564w peak draw would not be okay.

 

In the end there's a handful of factors beyond just the watt rating that factor in, Gamers Nexus made a piece on the subject.

 

[Ankerson]

16 minutes ago, Cyracus said:

If it's rated for 650w continuous it is designed so you can put a stable 650w load on it 24/7 without safety concerns, you do get ~14w(+/-5) more waste heat from the efficiency loss but for a system with peak a peak draw of 564w is fine.
    Peak 650w tends to work out to like 500w constant, on which a 564w peak draw would not be okay.

 

In the end there's a handful of factors beyond just the watt rating that factor in, Gamers Nexus made a piece on the subject.

 

 

I saw it, he was way off on some things....

 

My machine pulls more than he said a 10900K and 2080Ti pulled....

 

550W+ gaming load and 660W+ Peak.

 

Never take anything at face value....

 

I do agree that some people do over buy by a lot..... Like say those 1200W and 1600W PSU etc....

 

I tend to be reasonable in my PSU recommendations..... I like to factor in enough headroom for future upgrades too since the PSUs have such long warranties these days of 10 years or longer.

 

50% is way too much, but something in the 65% to 75% draw is tolerable. 

 

 

 

 

[Ankerson]

7 minutes ago, Cyracus said:

If it's rated for 650w continuous it is designed so you can put a stable 650w load on it 24/7 without safety concerns

 

 

Within the temp specs the PSU is rated at.....

 

That does indeed matter.... And a lot....

 

 

[Cyracus]

3 minutes ago, Ankerson said:

I saw it, he was way off on some things....

 

My machine pulls more than he said a 10900K and 2080Ti pulled....

 

Never take anything at face value....

Components have power draw variance unit to unit, let alone generation to generation

[Ankerson]

2 minutes ago, Cyracus said:

Components have power draw variance unit to unit, let alone generation to generation

 

Yeah I know.

 

That's why I said never take anything at face value.... The 10900K does actually pull more than the 9900K....

 

 

[Cyracus]

2 hours ago, ArasanChrisGaming said:

I’ve heard a lot of differing opinions but if my system power total is 564 watts will there be any problems running a 650 watt power supply.

Hey, sorry for off tracking your thread, what components are you powering? We'll be better able to advise you.

[Ankerson]

1 minute ago, Cyracus said:

Hey, sorry for off tracking your thread, what components are you powering? We'll be better able to advise you.

 

Been waiting on that too, he must have a machine if it's pulling that much.

 

At least what I have......

[MrBrightSyde]

30 minutes ago, Ankerson said:

 

Been waiting on that too, he must have a machine if it's pulling that much.

 

At least what I have......

Found his PCpartpickerlist from another thread of his

PCPartPicker Part List

Type	Item	Price
CPU	Intel Core i5-8600K 3.6 GHz 6-Core Processor	$225.99 @ Amazon
CPU Cooler	Corsair H80i 77 CFM Liquid CPU Cooler
Motherboard	Gigabyte Z370 AORUS Gaming 7 (rev. 1.0) ATX LGA1151 Motherboard
Memory	G.Skill Trident Z RGB 32 GB (4 x 8 GB) DDR4-3200 CL16 Memory	$169.99 @ Amazon
Storage	ADATA Ultimate SU800 256 GB 2.5" Solid State Drive	$38.99 @ Amazon
Storage	Corsair MP510 480 GB M.2-2280 NVME Solid State Drive	$89.99 @ Corsair
Storage	Western Digital Blue 1 TB 3.5" 5400RPM Internal Hard Drive	$46.66 @ Monoprice
Video Card	MSI GeForce RTX 3080 10 GB VENTUS 3X OC Video Card
Case	NZXT H440 ATX Mid Tower Case
Power Supply	EVGA SuperNOVA NEX 650 W 80+ Gold Certified Fully Modular ATX Power Supply	$279.98 @ Amazon
	Prices include shipping, taxes, rebates, and discounts
	Total	$851.60
	Generated by PCPartPicker 2020-09-13 22:51 EDT-0400

 

[Ankerson]

8 minutes ago, MrBrightSyde said:

Found his PCpartpickerlist from another thread of his

PCPartPicker Part List

Type	Item	Price
CPU	Intel Core i5-8600K 3.6 GHz 6-Core Processor	$225.99 @ Amazon
CPU Cooler	Corsair H80i 77 CFM Liquid CPU Cooler
Motherboard	Gigabyte Z370 AORUS Gaming 7 (rev. 1.0) ATX LGA1151 Motherboard
Memory	G.Skill Trident Z RGB 32 GB (4 x 8 GB) DDR4-3200 CL16 Memory	$169.99 @ Amazon
Storage	ADATA Ultimate SU800 256 GB 2.5" Solid State Drive	$38.99 @ Amazon
Storage	Corsair MP510 480 GB M.2-2280 NVME Solid State Drive	$89.99 @ Corsair
Storage	Western Digital Blue 1 TB 3.5" 5400RPM Internal Hard Drive	$46.66 @ Monoprice
Video Card	MSI GeForce RTX 3080 10 GB VENTUS 3X OC Video Card
Case	NZXT H440 ATX Mid Tower Case
Power Supply	EVGA SuperNOVA NEX 650 W 80+ Gold Certified Fully Modular ATX Power Supply	$279.98 @ Amazon
	Prices include shipping, taxes, rebates, and discounts
	Total	$851.60
	Generated by PCPartPicker 2020-09-13 22:51 EDT-0400

 

 

Ah WOW, you are the man.... 

 

I would recommend he wait and see what those 3080's really pull....

 

And or just go with NVIDIA's recommendation of 750W and forget about it....