In most cases the maximum project size that can be processed is limited by the amount of RAM available. Therefore it is important to select the platform allowing to install required amount of RAM. See Memory Requirements.
Complex geometry reconstruction algorithms need a lot of computational resources for processing. A high speed multi core CPU (3GHz+) is recommended.
Agisoft PhotoScan supports GPU acceleration for image matching and dense cloud generation steps, so high-end OpenCL or CUDA-compatible graphics card can speed up the processing.
CPU: Quad-core Intel Core i7 CPU, Socket LGA 1150 or 1155 (Kaby Lake, Skylake, Broadwell, Haswell, Ivy Bridge or Sandy Bridge)
Motherboard: Any LGA 1150 or 1155 model with 4 DDR3 slots and at least 1 PCI Express x16 slot
RAM: DDR3-1600, 4 x 4 GB (16 GB total) or 4 x 8 GB (32 GB total)
GPU: Nvidia GeForce GTX 980 or GeForce GTX 1080 (optional)
CPU: Octa-core or hexa-core Intel Core i7 CPU, Socket LGA 2011-v3 or 2011 (Broadwell-E, Haswell-E, Ivy Bridge-E or Sandy Bridge-E)
Motherboard: Any LGA 2011-v3 or 2011 model with 8 DDR4 or DDR3 slots and at least 1 PCI Express x16 slot
RAM: DDR4-2133 or DDR3-1600, 8 x 4 GB (32 GB total) or 8 x 8 GB (64 GB total)
GPU: Nvidia GeForce GTX 980 Ti, GeForce GTX 1080 or GeForce TITAN X