Question Is my PSU to weak?

[OlssonNDD]

Hi,

Here is my comp-list:
cpu: i5-12600k
mobo: Asus Rog strix b660-i
gpu: rog strix 2060 S
ssd (OS): samsung 980GB 970 m.2
ssd: samsung 870 EVO
psu: Cooler master V750 SFX Gold Rev.2
chassi: NR200P
cooling: H100 240mm rad with total of 4 120mm fans in chassi. (Cooling is no issue)

So here is the issue:

I just swaped out my GPU to a Asus Rog Strix RTX 3080 TI and now i run in to all sorts of problem. If i unplug the gpu i can use integrated graphics so the computer works fine. But when i plug in the gpu everything goes to hell. No video, no boot device, video thru cpu but it freezes after 5s of usage. When i use integrated grsphics i can clearly see the gpu, it is detected and no errors. But as soon as i change cable from integrated to the 3080 all cinds of issues appear.

So my question is. Is this a bad gpu? Or is my power supply simply to weak? The CPU goes up to 80W during boot.

please help.

 

[DRagor]

750 W might be a bit short of Strix 3080 ti. That said, the behavior you described is more likely to be caused by bad GPU (or driver problems). I mean, even if your PSU is not enough the system should still work fine until you put some load on GPU (like gaming or benchmarks). It should not just freeze or show no display at all.

 

[OlssonNDD]

So RMA gpu is your sugestion?

 

[RodroX]

If the PSU was not enough, you would have issues while playing games/rendering videos, etc., but you should still be able to boot up, load windows and do basic stuff (youtube, office, etc)

That Strix model is the one with 3x8-pin PCIe power connectors right ?, In that case, even if it work with your current PSU, I would still aim for a good A-Tier 850Watts PSU.

 

[DRagor]

So RMA gpu is your sugestion?

It might be worth checking it in another PC if possible to confirm it does not work as it should. But if not possible I would RMA GPU first. Though, you still will need beefier PSU, so you can get PSU first and if that does not help then RMA GPU.

 

[OlssonNDD]

So the issue was found, i was using a pcie gen 3 riser in my pcie gen 5 mobo on a pcie 4 gpu. Wich caused all type of issues. Thanks for all replies

 

[DRagor]

Well, too bad you completely omitted the fact of using riser in your description of problem ... if we knew that it would be solved in 10 seconds as 'remove the riser' would be the very first suggestion. Shows up how even very minor details are important.