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Is my 750W-Seasonic Tx enough for Rtx 3090?

Yep, I'd expect so, however for me, invest around £10 on a certain online retailer and puick up a plug socket that measures the power draw at the wall, it'll give you a definitive answer then. yes, you should be able to as I'd expect that that power supply would be looking around 600-650w actual watts maybe a touch more, so in theory yeah.
 
Corsair HX750i PSU here with a 3090 and a 9900k, OC'd both CPU and GPU with no issues. Did require two separate PCIE cables to the Graphics.

No more noise coming out the PSU (I think the fan spends most it's time turned off) than when I had a 9700k and GTX 1070.
 
Oh great. Another thread by this guy who replies to answers with more questions. Hes exhausting.

Look at his profile for all posts.

Almost every one of them is a question.
 
Somebody told me this:"750w is not enough. You need at least 850w or more to ensure system stability, especially overclocking."

IS this true?<last question>
 
SO i gues he is not right and sleep good?:) A|Too many questions.

images
 
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900W?!


He said:" when Full load I saw 900watt pull from wall using wattmeter"
He pc:
Intel 10980XE @ 5.0 Ghz (custom loop) Asus Rampage Encore x299 4x8Ghz DDR4 4000Mhz CL17 Gigabyte Nvidia RTX 3090


How is this possible 900w?
 
sewerino26 said:
9700k stock
Click to expand...


I had a EVGA 750W(which is a Super Flower) and I have a ASUS Strix OC on order.
With my 9700K @5.0 all core I have bought a EVGA 1000W G3(Super Flower Leadtek 2) power supply ready for it.

The ASUS Strix goes up to 480W on it's own
Just try yours and see.
 
deuse said:
I had a EVGA 750W(which is a Super Flower) and I have a ASUS Strix OC on order.
With my 9700K @5.0 all core I have bought a EVGA 1000W G3(Super Flower Leadtek 2) power supply ready for it.

The ASUS Strix goes up to 480W on it's own
Just try yours and see.
Click to expand...
You bought 1000W? You think 750W cant be enough?
 
sewerino26 said:
You bought 1000W? You think 750W cant be enough?
Click to expand...

any oc'd cpu with a stock clocked 3090 and a 750w psu is more than enough, if you plan to run both cpu and 3090 oc'd then you need minimum 850w and ideally 1000w for the headroom

on the other hand a oc'd cpu and a stock 3080 will run fine on a 750w, maybe a good quality 650w and if you push a oc'd cpu and a oc'd 3080 a 750w will also be ok

The problem is with the 3090's they can pull a huge amount of watts for a split second in games and benchmarks which can trip over current protection on psu's and many 750w units can fall foul, thats why ideally a 850w is recommended for a 3090 setup really even though nvidia don't specify that
 
sewerino26 said:
900W?!


He said:" when Full load I saw 900watt pull from wall using wattmeter"
He pc:
Intel 10980XE @ 5.0 Ghz (custom loop) Asus Rampage Encore x299 4x8Ghz DDR4 4000Mhz CL17 Gigabyte Nvidia RTX 3090


How is this possible 900w?
Click to expand...


18 core cpu will eat power and coupled with a 3090 the total power draw for that setup will be huge
 
OP, it's really simple.

As you already have a 750W PSU, and a good one at that, just wait until you get your 3090.

Then try it, your system will either be OK (it should be) or it won't.

In the unlikely case it's the latter and you know for sure it's a PSU problem, then get a new PSU.
 
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