Question RTX 3080 on 650W

Leplivo

Prominent
Jan 9, 2020
15
0
510
0
Hello, I have been saving money to get a 3070 but because 3080 is not that more expensive I have been wondering if my 650W PSU can handle it. My PC specs:
R9 3900X
GTX 1050Ti
GB X570 Aorus Elite
16Gb 3200Mhz
2Tb Seagate BarraCuda
250Gb MX500 Crucial
EVGA 650W G5 SuperNova
 
Not the best EVGA's psu but i think it will do.
In gaming a 3080 can eat up to 400W so you will be left with very little headroom,especially if you overclock CPU/GPU.
If you can,return the G5 and grab a GS 850W or something with more wattage than 650W.
If you find something else make sure to come back here and check if its ok.
 

Phaaze88

Polypheme
Ambassador
Both got flagged for poor transient response; one of the greatest flaws with Ampere has been its high transient power spikes, so I doubt the 650w version is any better.
That is very true, even some higher quality PSU’s with only average transient response performance have issues with the 3080 & 3090 even if a higher wattage. Seen many issues reported with the RM850 for example.
 
Reactions: Phaaze88

Karadjgne

Titan
Ambassador
Figure the cpu will eat up 150w stock PBO.
The motherboard, drives and everything else will eat up 50-100w.

Thats roughly 250w spoken for. Add in upto 400w for a maxed out 3080 and you are really pushing the limits. Gaming tends to run @ 70% psu loading, so generally you'll be gaming @ 400w, but the spikes are what's going to hit hard and push that 650w limit.

It's doable, barely, but definitely not advised to run a 3080 on 650w, even a decent model.

But right now, if you can actually Get a 3080 for a decent price, and not get scalped or have to wait for months, then an upgraded wattage psu is a minimal expenditure.
 

HWOC

Prominent
Jan 9, 2020
126
17
595
2
If you can get a 3080 at a decent price, just get it! Worry about changing the PSU later. I mean, if you have to buy a new PSU and sell the old one, the difference is probably going to be less than 50 bucks anyway.
 

ASK THE COMMUNITY