Question PSU recommendation ?

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starb0y

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Jul 17, 2018
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Hello,
My current rig

Asrock b550pro4
R5 5600x
2x8 Xpg spectrix d45g 4133mhz ARGB
" GTX 1050 "
2x 7200rpm hdd seagate+ wd
1x sata ssd samsung a400
1x NVME 970 evo plus
Noctua u12s redux 120mm fan non rgb/argb
3x argb fans 2x non argb
Argb mouse kb headset...

My current PSU is ATOM B650 650W 80+ BRONZE ..
I am currently planning to upgrade my gpu to a Asus tuf rtx 3080 gaming v2 and in the future to have a 4ram pieces and maybe a 980 evo pro beside that 970 one..


But my first question is would my psu handle that gpu with no problems without any other upgrades just the gpu upgrade only!! it's almost 2 years old now and it have only single pcie 2x(6+2) output cable..

And if not .. Which one of those PSUs should I buy as my budget is limited

1. XIGMATIK Hydra M 750w 80+ bronze full modular
2.Cougar VTE V2 750w 80+ bronze
3.Cooler Master MWE 750W 80+ bronze

​

 
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You are going to want at least a 750W power supply for your RTX 3080, even if you kept everything else in your system stock. You can adjust your budget to get a new power supply, or you could get a different video card that fits within your current specs.

Out of the three you listed, the Cooler Master is your best option. You should never buy cheap power supplies, and only purchase brands you recognize. You will always be better off with paying a little more for a quality unit, as opposed to a cheap unit that potentially fries your system or starts a fire. However, if it was my rig, I would skip all three of those and pick up something like the Corsiar RM750e. It's 750 watts for your new video card, and has a much higher efficiency rating than the three you listed. It's also fully modular to keep your system tidy. Considering it's only twenty dollars more than the Cooler Master, this is definitely a better value and much more reliable option.

Alternatively, you could grab a different video card and skip upgrading the power supply entirely. The AMD RX 6800 isn't much slower compared to the RTX 3080, and only requires a 650 watt power supply. The RX 6800 is also much cheaper than the 3080, so you would have more wiggle room to spend on other parts. If you have your heart set on the Nvidia brand, then go with the 3080. But if you don't care about proprietary features like DLSS, Ray Tracing, or other Nvidia services, you would be better off with the RX 6800. If you want something more performant than the 6800, you could grab the Corsiar RM750e, and purchase something like the RX 7800XT over the 3080. The RX 7800XT is still cheaper than the RTX 3080, but is generally more performant. Hope this helped, take care.
 
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turtletarget111 said:
You are going to want at least a 750W power supply for your RTX 3080, even if you kept everything else in your system stock. You can adjust your budget to get a new power supply, or you could get a different video card that fits within your current specs.

Out of the three you listed, the Cooler Master is your best option. You should never buy cheap power supplies, and only purchase brands you recognize. You will always be better off with paying a little more for a quality unit, as opposed to a cheap unit that potentially fries your system or starts a fire. However, if it was my rig, I would skip all three of those and pick up something like the Corsiar RM750e. It's 750 watts for your new video card, and has a much higher efficiency rating than the three you listed. It's also fully modular to keep your system tidy. Considering it's only twenty dollars more than the Cooler Master, this is definitely a better value and much more reliable option.

Alternatively, you could grab a different video card and skip upgrading the power supply entirely. The AMD RX 6800 isn't much slower compared to the RTX 3080, and only requires a 650 watt power supply. The RX 6800 is also much cheaper than the 3080, so you would have more wiggle room to spend on other parts. If you have your heart set on the Nvidia brand, then go with the 3080. But if you don't care about proprietary features like DLSS, Ray Tracing, or other Nvidia services, you would be better off with the RX 6800. If you want something more performant than the 6800, you could grab the Corsiar RM750e, and purchase something like the RX 7800XT over the 3080. The RX 7800XT is still cheaper than the RTX 3080, but is generally more performant. Hope this helped, take care.
Click to expand...
Hello, Thanks for taking care about all the details,
but I'm really sticking to the 3080 cause i'm buying it used actually, so it's cheaper than any alternative
I'm just hoping if my psu can handle that gpu for just couple of days until I get a new psu,,
Beside that the Corsair RM750e is currently out of stock in my entire country,, and it's also more ,,, lot more expensive, right now that psu is taking space in my mind the SeaSonic FOCUS GM 750W 80+Gold It's almost double the price of the ones I've mentioned earlier, That's the only acceptable+available right after the Cooler master one, and ngl I wanted to get a 4070 one for the new NV1 encoder, but they're all expensive way more expensive so I'll just have that for now and figure it out later

1more question is the 1xPCIE 2x(6+2) cable designed to outputs hm watts, like is there's a standard for all of them or is it just based on the brand/psu itself?

Thanks in advance.

​

 
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Here is one table of psu sizing for graphics cards:
750w is recommended for 3080.
Less might work, it is not harmful to try.
You might, on occasion, have failures due to power spikes that a cheap 650w psu might not be able to handle.

Your processor can likely run an even stronger card than a 3080 in the future.
It would be wise to provide for that with a 850w psu.
A psu will only use the power demanded of it, regardless of the max capability.

The key consideration in buying a psu is quality, If you buy a psu with a 7 year or better warranty, the quality is likely to be good.

On using a 1 cable with two 6+2 connectors, do not try to connect two 8 pin gpu connectors.
The reason is that the single cable may not handle the potential combined current.
Two 6 pin or one 8 plus one 6 pin would be ok.

The Seasonic focus GM 750 with a 7 year warranty is a reasonable pick.
In the US, the 850w version is only $15 more.
 
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geofelt said:
Here is one table of psu sizing for graphics cards:
750w is recommended for 3080.
Less might work, it is not harmful to try.
You might, on occasion, have failures due to power spikes that a cheap 650w psu might not be able to handle.

Your processor can likely run an even stronger card than a 3080 in the future.
It would be wise to provide for that with a 850w psu.
A psu will only use the power demanded of it, regardless of the max capability.

The key consideration in buying a psu is quality, If you buy a psu with a 7 year or better warranty, the quality is likely to be good.

On using a 1 cable with two 6+2 connectors, do not try to connect two 8 pin gpu connectors.
The reason is that the single cable may not handle the potential combined current.
Two 6 pin or one 8 plus one 6 pin would be ok.

The Seasonic focus GM 750 with a 7 year warranty is a reasonable pick.
In the US, the 850w version is only $15 more.
Click to expand...
Hi, Thanks for your detailed answer but I've got few questions more hopeing you have time for me,

So let's say I run that gpu on my current cpu which will need more 20- 30Watts to run that gpu properly I did the calculations manually
so it was like that and i really don't know if i'm missing something

cpu 77w
mobo 80w
2*ram 2*4
m.2 8w
sata ssd 2w
2*7200rpm hdd 2*8w
6argb fans 6*2w
fan hub 10w
213W all max consumption

and if my psu is working 80% at 100% load it will produce 650*0.8=520W so I will have +=307 free for that GPU which will always be more than that if I'm correct

What would happen if everything gets maxed out and the psu couldn't handle all that, what are the scenarios can you explain it to me in a short version?

Plus* I just wanna run it on my psu for 1 or 2 days maximum and I'll order that seasonic psu immediately

About my current free PCIE cable , so you're saying i should never connect everything out of that cable and i have only 2 options to use it like that for the 3080,, 2x6 only and leave the 2x2 that's one, and the other is 6+2 and 6 ! I hope I'm not wrong

One more question I'm sorry, I've 2 sockets called ATX12v1 8pins and ATX12v2 4pins,, I have only the ATX12v1 8pin got a cable plugged into it, is that's why my cpu was able to consume 110wats maximum when I enabled Curve optimizer and amd precision boost!
Also should I connect both of them when I get the new psu!

huge thanks
 
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Lucky_SLS said:
the 3000 series and 4000 series have transient spikes of 200% power draw for small durations.

View: https://www.youtube.com/watch?v=wnRyyCsuHFQ


Thats why a 750W ATX 3.0 PSU is recommended.

I would suggest a Tier A ATX 3.0 PSU

cultists.network

PSU Tier List rev. 17.0g - Cultists Network

PSU Tier List will help you to choose the best PSU out of hundreds of models on the market. From budget to the highest end Power Supplies.
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Click to expand...
hey can you check this down below please i really need an answer for it asap
starb0y said:
Hi, Thanks for your detailed answer but I've got few questions more hopeing you have time for me,

So let's say I run that gpu on my current cpu which will need more 20- 30Watts to run that gpu properly I did the calculations manually
so it was like that and i really don't know if i'm missing something

cpu 77w
mobo 80w
2*ram 2*4
m.2 8w
sata ssd 2w
2*7200rpm hdd 2*8w
6argb fans 6*2w
fan hub 10w
213W all max consumption

and if my psu is working 80% at 100% load it will produce 650*0.8=520W so I will have +=307 free for that GPU which will always be more than that if I'm correct

What would happen if everything gets maxed out and the psu couldn't handle all that, what are the scenarios can you explain it to me in a short version?

Plus* I just wanna run it on my psu for 1 or 2 days maximum and I'll order that seasonic psu immediately

About my current free PCIE cable , so you're saying i should never connect everything out of that cable and i have only 2 options to use it like that for the 3080,, 2x6 only and leave the 2x2 that's one, and the other is 6+2 and 6 ! I hope I'm not wrong

One more question I'm sorry, I've 2 sockets called ATX12v1 8pins and ATX12v2 4pins,, I have only the ATX12v1 8pin got a cable plugged into it, is that's why my cpu was able to consume 110wats maximum when I enabled Curve optimizer and amd precision boost!
Also should I connect both of them when I get the new psu!

huge thanks
Click to expand...
 
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starb0y said:
and if my psu is working 80% at 100% load it will produce 650*0.8=520W so I will have +=307 free for that GPU which will always be more than that if I'm correct
Click to expand...
This is mistaken. The RTX 3xxx series all have higher transient power spikes. IIRC the 3080 goes up to about 500-550w depending on version.

Take the advice and heed it. Do not cheap out on a PSU. It's th heart of your system. You want a strong heart, don't you? You defo don't want something that may trip here and there.

I'm pretty sure some Seasonic PSU have probs with 3xxx RTX cards.
 
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Static analysis does not work.
Your psu may or may not work properly with a 3080 card.
A psu can deteriorate with age.
And your psu never had a good warranty(3 yrs) in the first place.
Failure is not the real concern.
The concern is if the psu should fail under load, what happens?
Best case is nothing.
Worst case is that along with the psu, it damages not only your motherboard but also your new 3080 card.

Really not worth it for 2-3 days.
Just wait for a proper psu.
 
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Roland Of Gilead said:
Good luck with your choice. Let us know how it goes.
Click to expand...
I really couldn't post this idk why so ..
image.png
 
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Lucky_SLS said:
Is that your post ? What's the question exactly?
Click to expand...
yea i tried to post it as a reply here but i couldn't due to some error related to the thread's anti spam security, but whatever

I just wanna get a psu and i've these 3 options available
i maybe upgrade to 5800x3d soon but I don't know yet.
1. evga 850w 80+Gold full modular
2. msi mpg a850gf 850w 80+ gold modular
3. coolermaster mwe 850w 80+gold modular
 
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