[SOLVED] 650W PSU with a i5-9600K and a RTX 3080

[Lokari]

Hey!

I'm currently running a setup as followed:
CPU: i5-9600K (Stock clocks for now)
Motherboard: STRIX Z390-F GAMING
RAM: 2 x 8GB HyperX Fury
GPU: 1080 Strix
Storage: 2 x M.2 SSD's and a single SATA SSD
PSU: Seasonic 650W FOCUS+ 650 Platinum
+ 5 x 120mm fans, gaming keyboard & mouse and a few USB 2.0 slots occupied.

I'm definitely going to upgrade to a 3080, but I'm really on the edge of getting a new PSU along with it. I will go for the FE or a slightly overclocked (Asus, MSI or EVGA) aftermarket version. Will my PSU be enough?

 

[jeremyj_83]

https://www.realhardtechx.com/index_archivos/Page362.htm
This is a good place to start to have an idea as to what size PSU you will need based on your GPU. The Radeon VII for example is a 300W TDP GPU and the recommendation is 650W, whereas the Vega 64 is 295W but will use more in spurts and recommendation is 700W. The RTX 3080 is a 320W TDP and any OC model is going to be probably closer to 350W. Therefore I would say you probably are going to need a bigger PSU that 650W.

 

[Barty1884]

We won't know for sure until there are independent reviews.

However, the 3080 is supposed to be a 320W TDP - and the 9600K, even a heavily overclocked should top out <200W.

"Recommended" PSU wattages have to account for the good/bad/mediocre, so they're always going to be overshot when you're comparing with a quality PSU like you have.

I suspect you'll be ok with a 650W unit. In a perfect world, you'd want additional headroom, but I suspect your PSU should be 'enough' for that config.

 

[Lokari]

Yeah I figured so, it is really pushing it (likely) though. I ran the 9600k at 4.9GHz a while back and was contemplating on going back to similar clock speed. Considering the PSU is quite high quality, it would likely just turn off if I hit its limits. I won't be ordering day 1 though, as I want to see all the benchmarks so I guess I'll just sit on the 650W for now and see the benchmark results.

 

[jeremyj_83]

Yeah I figured so, it is really pushing it (likely) though. I ran the 9600k at 4.9GHz a while back and was contemplating on going back to similar clock speed. Considering the PSU is quite high quality, it would likely just turn off if I hit its limits. I won't be ordering day 1 though, as I want to see all the benchmarks so I guess I'll just sit on the 650W for now and see the benchmark results.

Actually that PSU will probably be able to send out more than 650W. However, you don't want to push the PSU beyond its rated amount really at all.

 

[Lokari]

Would you guys just straight up upgrade to a 750W or 850W in my position or try the 650W out and see what happens?

 

[Barty1884]

Would you guys just straight up upgrade to a 750W or 850W in my position or try the 650W out and see what happens?

I'd wait for the 3080 to launch & get reviewed first of all.

Maybe the power draw blows past 400W under load, in which case the answer will likely be different.

Based on information available, I'd personally avoid buying a new PSU for now, and would be comfortable running a 3080 from your current PSU.

Again though, wait for reviews.

 

[Lokari]

Okay, that is what I was thinking too. Thanks for the input!

 

[Turtle Rig]

If it is a quality 650w PSU then it should handle the 3080 no problem. 🙏💯🤷‍♂️

 

[Turtle Rig]

Man like a very long time ago I think when I got my Core 2 Quad I got a Corsair AX860w PSU. That carried over to my 4930k HEDT build 12 threads @ 4.5Ghz lol. Look just grab HWmonitor and look at your idle wattage usage. For most systems and I have tested its about 130 to 160w and about 145w avg usage. Once you open a browser and start surfing or watching a video that goes near 200w. If you fully use your CPU and GPU at the same time your hitting 380w to 600w depending on video card. TLDR 🖐🙏

Basically the above gurus are correct I don't think you can suffice with a 650w run of the mill bronze rated PSU for a expensive card that is for sure going to cost you about 1300 dollars after tax. 👈 Don't believe the nVidia pricing unless your in foreign country and its already expensive as heck. Also stock is low so grab her as you can and do a pre order if you really want one. I would personally wait and get a 3090Ti but then again Im not some rich kid who spends 2500 dollars on a freakin video card then china makes for 200 bones lol. I mean come on. Ridicilous asking prices across the board. I remember back in the late 90's a top notch video card was 250 dollars. Then slowly it became 500 dollars then 800 dollars then 1000 dollars and now if you want the top of the line coming in Nov Dec 3090Ti will cost 2500 at least to the door. MSI version or what have you lol. 👇😂👍✝👩‍🦲🚔🍩💯

 

[Lokari]

Well now that the reviews for the FE are out, what do you guys think?

With the peak gaming power consumption being around ~340 Watts I'm planning on using the 650W Platinum with both GPU and CPU being at stock speeds until Seasonic releases a PSU, which supports the 12-pin directly.

 

[Juular]

With i5 9600K it should be pretty safe.

until Seasonic releases a PSU, which supports the 12-pin directly.

Why do you need that ? There are 12-pin cables for Seasonic, Corsair and other brands that just powered by 2x 8-pin ports on the PSU.

 

[Lokari]

Why do you need that ? There are 12-pin cables for Seasonic, Corsair and other brands that just powered by 2x 8-pin ports on the PSU.

I mean yeah, I don't necessarily need it, especially since Seasonic gives their own 12-pin for free now. But if I am going to upgrade my PSU likely sooner or later anyway at this point, I would rather just get one that straight up comes with the 12-pin.

 

[Barty1884]

I mean yeah, I don't necessarily need it, especially since Seasonic gives their own 12-pin for free now. But if I am going to upgrade my PSU likely sooner or later anyway at this point, I would rather just get one that straight up comes with the 12-pin.

Unless it's a FE card you're looking all, most (all?) AIB cards will be using the more 'traditional' 8pins, AFAIK.