Hi All, as per title, is 650W PSU enough for below part? I tried Cooler Master PSU calculator the result shown 590W for the whole built, but i saw Zotac website its shown zotac trinity 3080 ti 12gb recommended PSU is 750W.

Ryzen 7 5700x
Cooler Master Hyper 212 turbo
B550 Mobo
8GB 3200Mhz DDR4 RAM x 4
1TB M.2 SSD x 1
Zotac trinity 3080 ti 12gb
1TB HDD x 1
and probably 6 120mm case fan

Last time I use 3080 non TI, with 5800X GX650 650W Cooler Master gold unit will trip when running certain games, I would suggest get at least 850W gold unit and above to be safe. You need to consider the GPU power spike or transients too.

Reddit, Gamer Nexus explained.

3080 Ti ? See what GN recommends below:



3080s & 3090s have notorious high sudden power spikes that can shutdown underspec PSUs. Most PSU calculators dont factor this.

Also consider min above is for new PSU in new system, if you going to keep for few years need to budget extra 50-100w (ie 850W) to factor in PSU deterioration.

This post has been edited by babylon52281: Aug 22 2024, 03:17 PM

Thanks for the input, very useful info and real life experience sharing. Luckily havent bought 650W PSU yet.

if u won't OC your gpu or cpu at all... better still, if you undervolt them, then the psu is adequate...

then again, if you are thinking of getting a new psu regardless, better get a bigger one.

Not enough. I have the 3080 12GB , my 750W Seasonic PSU is barely enough.
All 3080/3090 cards have power spikes once in a while . Can eat up 500W+ in split seconds for mine.
Lets say your CPU eat up 100W .

And your RGB , AIO pumps , fans , HDD ? .. you dont have enough headroom.

This post has been edited by k!nex: Aug 23 2024, 12:45 AM

Thanks for your input, but do you mind to share your PC spec?

last time one of my friends used evga 1000w with a 3080 ti. first 2 years no issue, then all the sudden play games momentarily pc would shut down. turns out 3080 ti is spiking very high with age!

tukar to corsair hx1500i and the problem went away.

so yes, 650W isn't enough. 850W also not enough.

better get newer ATX 3.0/3.1 PSUs (preferably those that don't have a dedicated 12vhpwr port - good ones will provide cable for 2x8 pin to 1 12vhpwr, hence compatible with non-12vhpwr GPUs), most can handle spikes that are higher and longer duration than older ATX 2 PSUs.

Well, i'm running on :

R7 5700X3D
Gigabyte X570 Aorus Master
8GB X 4 Patriot Viper Steel 4400Mhz CL19 @ 3800 CL14
360mm Thermaltake Water 3.0 AIO
Colorful Vulcan RTX 3080 12GB
Seasonic M12 ii Evo 750W
2X 200mm , 4 X 120mm RGB fans.
1 NVME SSD boot drive ,3 SATA SSD , 1 HDD
Quite alot of lighting stuffs.


This post has been edited by k!nex: Aug 24 2024, 03:10 PM

PSU have its own rating tier, for the usually efficiency rating is tested between 70% load and it's recommended to not run your PSU load beyond 70%.
Also not mentioning now CPU and GPU can consume more wattage for frequency boost.

Therefore assuming your PSU is 650W x 0.7 load x 0.92 efficiency =~ 420W

This post has been edited by yeo1992cc: Sep 12 2024, 10:02 PM

mine FE 3080 Ti , on paper min 750watt, and some model min 850watt.

must have higher psu laa, more safe side. who know power spike.

3080 Ti is recommended to have minimum 750W PSU but always give some buffer to it. 850W would be minimum to me but bare in mind the PSU will be degraded after years of usage. Basically, normal gaming should be enough if you don't overclock it. So far I never overclocking my graphic card or processor.

A little note: 3080 Ti's are known for their high transient power spikes, so it's recommended to get something that can handle the power spikes

Tech jesus have told what you need to know. End story.