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Will my PSU run a 3070 Ti

Soldato
Joined
28 Jun 2013
Posts
4,505
Nvidia say a 750W PSU is needed but my current PSU is a very good 650W and i only have an i5-8600K, 16GB RAM and not many hard drive / SSD or anything.

I have the dual 8 Pin, my current 980 Ti uses that anyway.

The PSU is this one :
650W Seasonic X-Series, 80 PLUS Gold, Full Modular, SLI/CrossFire, Single (1) Rail, 54A +12V, 1x120mm Fan, PSU
 
I would say the PSU could power the system, but im also cautious when the GPU says minimum 750W.

Looking at a few different power supply calculators online say it can run on a 600-650W PSU, but at the same time im not 100% on how accurate they are.

So as a caution I would say no, you'll probably need a 750W PSU. But if you were to put the GPU in the system and the current PSU wasnt enough it looks like the PSU has built in protection for over voltage/ too much use so may be worth trying

EDIT: I looked on the power supply calculator site, it says a 600W PSU could power my 3800x and 3080 with all my liquid cooler and such, so I'd take it with a pinch of salt.
 
I'd try it. I'd even try a 3080 on 650w pay if I'm honest. Believe it or not my friend runs his 3070 on a 400 something watt power supply, far as I'm aware no issues surprisingly.
 
I'd try it. I'd even try a 3080 on 650w pay if I'm honest. Believe it or not my friend runs his 3070 on a 400 something watt power supply, far as I'm aware no issues surprisingly.
 
I'd imagine it will be fine considering people are running 3080s on 650w without issue.

Should be fine then, I actually remember when i bought the PSU i was reading tests / reviews. One stood out that had tested it to its limits and were saying how Seasonic were very modests in their 650W rating for the PSU
 
Should be fine then, I actually remember when i bought the PSU i was reading tests / reviews. One stood out that had tested it to its limits and were saying how Seasonic were very modests in their 650W rating for the PSU
Yeah it's a good brand so I'd be more inclined to run a powerful GPU on a 650w seasonic over a 1kw non branded psu.
 
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I'd try it. I'd even try a 3080 on 650w pay if I'm honest. Believe it or not my friend runs his 3070 on a 400 something watt power supply, far as I'm aware no issues surprisingly.

I would not have thought that would work, I mean I understand testing your luck with a PSU like 100W under but thats mental :eek:
 
I would not have thought that would work, I mean I understand testing your luck with a PSU like 100W under but thats mental :eek:

I think Nvidia factor in if the user has a nasty cheap Chinese poor efficiency PCU and has beefy overclocks on a high power CPU and fully loaded rig with a big bunch of HDD`s and 4 RAM slots or whatever.
 
I have the 3070TI and using it with the Corsair RM750x, I have OCD issues with PC's so I would want 750 watts, I wanted the 850watts version but was out of stock at the time, I believe more is better.
 
Just checked and yep, it's a Corsair VS450 it's running on haha.

I guess my mind is still stuck in the days of Ivy Bridge and Keplar stuff needing decent power supplies :D

I think Nvidia factor in if the user has a nasty cheap Chinese poor efficiency PCU and has beefy overclocks on a high power CPU and fully loaded rig with a big bunch of HDD`s and 4 RAM slots or whatever.

Thats a good point, I'd like to hope someone wouldnt use a crappy PSU with a 30 series card no matter which one it is :D
 
I find that it depends mostly on the quality of the psu and how aggressive the protection on the psu is, along with of course the power draw from the cpu and rest of the system. I happily ran a 6800 in an itx case on a 450 corsair sfx psu. If you find the system crashing because of power issues try capping the fps of the game to reduce power draw. In many of the older titles I play I can cap the fps at 75 fps and the 6800 will draw less than 50 watts
 
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