What is GPU mining?
- Author
- CRYPTO PORT Editorial
- Published
- Updated
- Reading time
- 4 min
In short
GPU mining uses graphics processors — hardware built for massively parallel arithmetic — to mine blocks. It is far more efficient than a CPU and stays reusable for other work. But on any algorithm where ASICs exist, GPU hash power is simply drowned out.
Key points
- Mining with graphics cards built for parallel work
- The hardware stays useful for other tasks afterwards
- No match for ASICs where ASICs exist
- Power, heat and hardware wear are the real limits
Definition
Mining that relies on the parallel arithmetic capacity of graphics processors. Less efficient than dedicated hardware, but the cards can be repurposed for other work.
Mining is the act of hashing over and over until a value meets the target. A GPU, which can run the same calculation across thousands of lanes at once, fits that task well and attempts far more hashes per second than a CPU.
While Ethereum ran on proof of work it deliberately used a memory-heavy algorithm to resist ASICs, which made GPUs the dominant hardware. That demand disappeared after the 2022 Merge moved the network to proof of stake.
Running a GPU at full load for months wears out fans and thermal pads first. In a setting with unstable power, the strain on the power supply matters too. Unlike a dedicated miner, though, the card can be sold or reused once mining stops.
Watch out for
- · Sustained full-load operation shortens hardware life and may void warranties
- · Exceeding a home circuit's capacity risks fire or repeated outages
- · If the chain changes its consensus method, the mining itself ends