The HW setup for finding the prime was Nvidia and AMD GPUs with good FP64 in the cloud, using "spot" instances for better price. This allowed scaling up quickly to many GPUs, and it did have a significant cost.
My personal setup is 8x Radeon Pro VII which also provide heating during the cold season. During summer the effort is in removing the excess heat, and the GPUs run in a reduced-power mode (slower & more efficient).
Comments
The HW setup for finding the prime was Nvidia and AMD GPUs with good FP64 in the cloud, using "spot" instances for better price. This allowed scaling up quickly to many GPUs, and it did have a significant cost.
My personal setup is 8x Radeon Pro VII which also provide heating during the cold season. During summer the effort is in removing the excess heat, and the GPUs run in a reduced-power mode (slower & more efficient).