a lot of ETH miners underclock and undervolt the cards.

gpu mining becoming not profitable will not only flood the market with cheaper used gpus but also reduce the excessive demand for new gpus, both will lower prices.

Mining is about flop/$, rather than flop/s, so overclocking is actually rare. The best mining GPUs are the ones that are most efficient, not most powerful; overclocking usually trades efficiency for power.

Most GPU manufacturers allow RMAs to carry between card holders. If you own the card you can RMA it. Out of 1/10th the cost of the GPU, some paper work, and some time waiting for a package in the mail, you get a brand-new-old GPU!

I'd love to upgrade from my GTX 750 ti (that I picked up for 60$ and an order of Chicken Tenders & French Fries) to something more high-performance.

Also, if you're not doing a 100% duty cycle, and replace the thermal compound on the card, even a well used card will last a few more years. If you can pick up the cards as sub-$70 it's still worth it.

I have mined, and know people who mine, and so while it might sound counter intuitive, have never heard of a card going bust.

The only card I did hear of was a gamer who didn't mine, and as other comment mentioned, it was RMA'd.

I ran a R9 380 at 80 degress for months >_< sold it but it still worked a treat.

I think he might be talking about for non crypto-currency usage. Like, I dunno, graphics.

If you want to sell me a card used in mining for pennies on the dollar I'll take it. My email email is in my description.

RX 480/580 and GTX 1060/1070/1080 are all welcome as long as they start, are recognized by the computer, and haven't been overclocked.

If you live near a place with cheap housing, less then $0.10/kWh, and within a 1hr drive to a microcenter you can...

     1. Talk to the microsoft returns people and say "If you see anyone dropping off a bunch of graphics cards give them my number"
     2. Check E-waste places
     3. Check ebay
     4. Check Craigslist