Question Why is my Intel Z77 dz77ga-70k still worth money?

The motherboard? Because they are somewhat rare now. Not that particular one, but Z-series boards in general. You can get the 2nd and 3rd-gen CPUs for cheap, but the good motherboards used for overclocking have all been used up. Honestly, I bought one of those exact motherboards on eBay about 2 years ago to go with an i5-2500K. It worked for about 2 weeks. Then it just wouldn't turn on one day. Maybe I was just unlucky, but that isn't the first old motherboard that quit working on me. Motherboards are very intricate and are rather easy to break in one way or another. That is also another reason why they are more expensive the older they get, because you can't buy them anymore and people continue needing them. Motherboards break a lot easier than Intel CPUs.

Simply put, supply and demand. There are lots of K-series Intel CPUs on the market, but not very many Z-series motherboards to go with them. $100+ is crazy. Dont' invest in old hardware that might break on you without a warranty. Get something new if you want to spend money.

*Edit: I just realized you said "My Z77".. you can sell it if you want. I thought you were looking to buy or replace it. I say don't buy them because you don't know where they came from or how badly abused they were.
 
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USAFRet

Titan
Moderator
Your motherboard is worth $0, until you sell it and money changes hands.

Other people?
Well...If I have a compatible CPU, DDR3 RAM, a case and PSU, all I need is a motherboard to slap together a HTPC to deliver movies to the TV.
Seeing as they don't make those anymore...

In fact, a Z77+i5-3570k is what is powering my HTPC right now.