I am just a newby and I question myself:
Why do most people use ATI graphic cards to mine bitcoins, instead of using dedicated ASIC mining machines ?
I found this link :
https://en.bitcoin.it/wiki/Mining_hardware_comparisonWhen I look at:
- hash rate (Mhash/s)
- price
- power consumption
I conclude that a dedicated mining machine Xtreme Miners Lion 7.5 Th of $14.500 with a hash rate of 7.500.000 Mhash/s and power consumption of 2250 Watt, is much more efficient then the setup I found on this website :
https://en.bitcoin.it/wiki/Mining_rigA PC with Three ATI 6990s cards, total costs $1824 with a hash rate of 1.400 Mhash/s and power consumption of max 950 Watt.
I really do not understand, why people invest in ATI cards, while the dedicated mining machine is about 5000x faster and cost about 10x times as much.
Can somebody explain this to me ?