I had a Sapphire RX470 OC 4 GB laying around, so I decided to test it to check if it was still functional.
No signal at all, but peripherals lit up, so I tried plugging my 1080 to check for the problem.
I booted in Windows, opened HWiNFO and what I saw shocked me. You can scrolls down to check by yourself... (I added a gpu-z reading of -1024 KB of cache)
Same results are shown with the card installed in another pc...
Things that are "strange":
-1024 KB of cache;
1.6 MHz core clock;
-0.044 V Vcore (lmao!?);
1,018.008 A core current;
-44.538 W core/aux current;
137,438,953,440 memory errors (yes, 137 billions errors).
I opened the card but everything looks fine, the paste was reapplied just before the test (I used some Thermal Grizzly Kryonaut, so no problems from here). I reopened the card after and there was an even mounting pressure, so no very quick overheating problem.
What could the problem be?