New PSU suggestions

[Dobby_is_free]

Hey all, do I recently got a RX 7900 XT and a Ryzen 9 7900X to upgrade my system. I also need to upgrade my PSU and I have a few questions. first would be the wattage, I was planning on getting a 1200W unit to be future proof, but is that really necessary, or would a 1000W unit be good for the future as well? Also should I get a ATX 3.0 Unit or does that not really matter? Some of the units I've looked at buying are, Thermaltake toughpower GF3 1200W ($230), Corsair RMx Shift series 1200W (~$270), and Seasonic vertex GX 1200W ($290). Would any of these units be good or do you have other suggestions?

[ImWilly]

Hi, congrats on your upgrade

Regarding of PSU choice, TLDR as long as it's fully modular, you will have more flexibility in building your PC and cable management

And for more details, you can check in this forum (

In summary, Seasonic GX and Corsair RMx is a better choice, but Seasonic is very well known brand specialized in PSU, and a major sponsor of LTT (sorry, no segue to their sponsor ads spot)

 

About Watt capacity (this is my personal opinion and may be a hot take) 1000W should be enough, even for the next 5 years after CPU and GPU upgrad (I may be wrong, especially in recent Intel CPU trend power consumption on high end model)
I think that 1200W is suitable if you plan on adding 2nd GPU whether for machine learning, stream encoder, mining (if that is still a trend)

[NobleGamer]

2 hours ago, Dobby_is_free said:

I was planning on getting a 1200W unit to be future proof, but is that really necessary

Depends on how much OC you want and how important power efficiency is to you, since power efficiency can be highest around ~40% utilization, but that may only be the difference in 1-2% efficiency gain.

 

TDP of complete systems made on PC Part Picker with the 2 parts you mentioned is only ~600W. Of course TDP != max power draw of all parts, but my point is that 1200W is likely not necessary unless you have specific reasons for it - You do you though.

 

Otherwise, as little as 850W might be fine if you don't do OC, you double check max power draw of CPU & GPU, and you aren't too worried about transient spikes.

 

If you stay within your current GPU & CPU classes (#900) and power consumption in future generarions of that class don't skyrocket, then as long as the gap between your max power draw and PSU capacity is super narrow like 750W max draw vs 850W PSU, then it's possible that your PSU will wear down before you ever have parts that "outgrow" your PSU's capacity.

 

Nobody has a crystal ball to know how much power draw will go up in your given class over time, so I would just pick something that's not too small (like 750W) and something not a ton more than you can use in current or next gen (like 1200W). Something 900W-1000W I would think would fare well. If you want to try to predict the future and beef up capacity, thats fine it will just literally cost you.

[Dobby_is_free]

14 hours ago, NobleGamer said:

Depends on how much OC you want and how important power efficiency is to you, since power efficiency can be highest around ~40% utilization, but that may only be the difference in 1-2% efficiency gain.

 

TDP of complete systems made on PC Part Picker with the 2 parts you mentioned is only ~600W. Of course TDP != max power draw of all parts, but my point is that 1200W is likely not necessary unless you have specific reasons for it - You do you though.

 

Otherwise, as little as 850W might be fine if you don't do OC, you double check max power draw of CPU & GPU, and you aren't too worried about transient spikes.

 

If you stay within your current GPU & CPU classes (#900) and power consumption in future generarions of that class don't skyrocket, then as long as the gap between your max power draw and PSU capacity is super narrow like 750W max draw vs 850W PSU, then it's possible that your PSU will wear down before you ever have parts that "outgrow" your PSU's capacity.

 

Nobody has a crystal ball to know how much power draw will go up in your given class over time, so I would just pick something that's not too small (like 750W) and something not a ton more than you can use in current or next gen (like 1200W). Something 900W-1000W I would think would fare well. If you want to try to predict the future and beef up capacity, thats fine it will just literally cost you.

What about ATX 3.0 VS non ATX 3.0?

[NobleGamer]

2 hours ago, Dobby_is_free said:

What about ATX 3.0 VS non ATX 3.0?

I don't know much about it other than it offering a new GPU power connector, so I don't have an opinion about it, though it does have mote benefits than just the new GPU power connector: https://www.tomshardware.com/news/intel-atx-v3-psu-standard