I wouldn't expect it to. I think mythbusters did an episode on this, and it took the strength of one of those car lifting magnet cranes to damage an HDD.

Yes magnets can affect HDDs. But it needs to be very strong and close to the HDD. I wouldn't worry unless you are directly attaching it to you HDD and even then it probably won't do much if anything at all.

Remember HDDs already have strong permanent magnets inside them. Probably way stronger then the one on the bottom of that support.

You would usually need a really strong electromagnet to actually kill a hard drive through magnetism alone.

LOL You know what will damage a hard drive? A regularly used electric pencil sharpener on top of the case directly over the hard drive for a few years.

I have one in my case, attached to the metal part covering the PSU in a CM silencio case. I have a single 2.5" hdd in the same case, without any issues.

I can't tell how strong that magnet is, but I wouldn't risk it with my data.

It's always possible, but in my experience, the magnets in those graphics card stands aren't strong enough to hurt the data in a hard drive slotted below them. (Let's also remember that fans containing magnets are often placed near hard drives.)

If you're concerned, you could always replace the magnet with a rubber foot, or replace the whole stand with nonmagnetic cylinder like a cut-down paper towel spool. The graphics card's weight will probably hold it in place.

In any case, I recommend regularly making incremental backups of your data. Hard drives occasionally corrupt data and eventually die even when no magnets are around.

Ok so here is the situacian. I have rx 6800xt merc that definitly needs some kind of support. But down there is place for two hdds. I have one in top slot. So magnet is directly above 😶 thats why im a bit voried.

Here is another picture, but with hdd in botom slot.

Fields from magnets can, just depends how strong and this applies to spinning hard drives not SSDs. We had an idiot at work once that decided to store a bunch of magnetic bases on the top of a tower PC. Corrupted the drive. This case there were quite a few of them maybe in a half dozen to a dozen range and they were the strong lockable ones for breadboards.

I doubt it would affect anything, it takes a very large magnet to damage a HDD from outside the casing.