Brick1026

Hopefully. Thinking it might have been caked up dust I misidentified tbh.

I have some thermal paste and a spread on the way. Gonna reseat the AIO and go from there. Hopefully later down the line I’m planning to get a new case with a 3 fan front layout and better airflow.

I suspect it’s my case tbh, I have an NZXT case with shit airflow to the point of the tempered glass panel getting noticeably warm at times.

Temps aren't low but fine and not surprising since Prime95 is a pretty heavy stress test. 
Undervolting by a 0.1v offset should be easy. Just check and see if performance isn't lower with Cinebench and go with a smaller offset if needed. 

You could benchmark it but be careful of viruses on driver disks and the sort. The card may identify itself as something else but assuming the provided drivers are not 100% broken you should be able to get a benchmark and determine what card it is on par with and use that to determine the actual card. You might also be able to read what the gpu chip says if you remove thermal paste to get a serial code and use that to determine what card it is. If you don't want to take the card apart and the drivers prevent a successful benchmark because the card encounters errors you could try an automated driver installer to automatically install drivers. Try watching videos on fake cards you might be able to use those to determine a method to identify and get your card up and running as it was intended as wish.com and ebay scam cards have plenty of media coverage with people trying to determine the actual card. Now all of this is assuming that this is a scam card but it may just be a replacement GPU shroud in which case a quick benchmark or GPUZ should have no problem determining the card.

I was looking into buying doom ultimate on eBay  

I have this ancient Mac performa 6200cd power pc which has a crt moniter and a ball mouse with only one button . If you plug Apple EarPods into the power pc and listion to a cd in the CD player it sounds almost perfect. The old Mac also has a floppy drive in addition to the cd drive.

Oops sorry.

I was looking into buying doom ultimate on eBay  

a 1080 is a powerful 1060 ?  

Oh ok I'm an idiot.
 

Oh ok I'm an idiot.