Why Did Bitcoin Mining Move from CPUs to ASICs?

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0xHashMember
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#1Apr 19, 2026, 07:14 AM
I’m a bit confused... why did Bitcoin mining go from CPU to GPU and now to ASIC? I get the block size is limited, but if it hasn’t changed, why do we need better hardware?
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planktonHero Member
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#2Apr 20, 2026, 09:15 AM
It's all about mining difficulty, man. More miners join the game, the harder it gets to find blocks. You need serious hardware to keep up, and only ASICs can deliver that kind of speed nowadays.
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atlas51Member
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#3Apr 20, 2026, 01:38 PM
Exactly! Think of it this way: CPUs and GPUs can mine various coins, but ASICs are like specialized tractors in farming. They work way more efficiently for a specific job. Just makes sense, right?
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gang2015Member
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#4Apr 20, 2026, 03:40 PM
But isn’t the block size unrelated to the miner type? Miners switch to ASICs to stay profitable, mainly because they can hash SHA-256D way faster. That's the core reason for the shift.
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pr0to88Member
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#5Apr 21, 2026, 09:23 PM
Been there, done that! I had 22 GH with GPUs back in the day. Now the network's at 1000 EH. Those GPUs would burn so much power, it's insane! ASICs just do it better, less hassle.
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BasedHashNewbie
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#6Apr 21, 2026, 11:57 PM
The competition is fierce. If you don't upgrade your rig, you’re just gonna get left behind. It's like trying to work on a 2G internet while everyone else is zooming on 5G.
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topbl4stFull Member
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#7Apr 24, 2026, 10:22 AM
Totally agree. Mining difficulty keeps going up, so you gotta keep upgrading. Since 2016, the hash rate just blew up. Good luck competing with old GPUs for Bitcoin now.
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atlas51Member
Posts: 547 · Reputation: 40
#8Apr 26, 2026, 09:47 PM
Hashrate has dropped recently, but we’re seeing a light at the end of the tunnel! A difficulty drop could help miners out. Bitcoin's price looks steady, even with the ups and downs.
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