Curious issue with INNO3D RTX 3080, artifacting under load, performance stable and good though

[Chem1calWaste]

Have it as a small side hobby to buy broken or defective and do my best to repair them. Have succeded with basically all of them. 

 

Now bought a sold as broken RTX 3080 and was very pleased to see it be recognized, see it boot and work seemingly perfectly fine.

 

After trying FurMark or any 3D application with it, it starts to artifact but performs stable and as expected from a 3080. The artifacts are in the background and are flashing, blocky artifacts. Video is attached.

 

Temps arent the issue, tried 2 systems and 3 PSUs, no visible damage to the PCB, no shorts or anything anywhere either. Tried the basic steps of cleaning and the good ol' baking, which has proven itself more than once with similar cards. Drivers i am using are the 512.59 release. My resources here are of course limited and I am not an expert at this, so I might be missing something decently obvious. Any help is appreciated.

Here is a video showing the results of the benchmark, temps and the artifacts. https://streamable.com/e39um9 Testbench seen in the video uses an i7 3820 with 16 GB of DDR3 1600, but also tried it on a 5800x with 32 GB 3200, so other hardware isnt the issue.

[Zando_]

Blocky artifacting (especially if there's any funky colors) is usually indicative of the VRAM dying. 

 

(also please tell me you baked it in a dedicated oven and not the normal one you use for food)

[Chem1calWaste]

3 minutes ago, Zando_ said:

Blocky artifacting (especially if there's any funky colors) is usually indicative of the VRAM dying. 

 

(also please tell me you baked it in a dedicated oven and not the normal one you use for food)

Yeah, figured that that was the issue. That's beyond my capabilities then. 
Yes, I have an older dedicated oven for this. 
Also, nice titan you got there

[Zando_]

3 minutes ago, Chem1calWaste said:

Yeah, figured that that was the issue. That's beyond my capabilities then. 

If you want to use it for something, you can try downclocking the VRAM a bit and see if it will stop artifacting. Not really a fix, but it can make it usable for a while longer before it fully goes kaput.