I would like to add/update the information
1530/1535 - CPU: Marvell Armada 7040 1.40GHz in booth, 3 cores unlocked, RAM: 1530: 2GB, 1535: 4GB on board
1550/1555 - CPU: Marvell Armada 7040 1.40GHz in booth, 4 cores unlocked, RAM: 1550: 2GB, 1555: 4GB on board
1570/1575 - CPU: Marvell Armada 8040 2.00GHz in booth, 3 cores unlocked, RAM: 1570: 2GB, 1575: 4GB on board
1590/1595 - CPU: Marvell Armada 8040 2.00GHz in booth, 4 cores unlocked, RAM: 1590: 2GB, 1595: 4GB on board
1900- CPU: probably a similar CPU with the same number (24) of cores as Spark 2000, just underclocked?, RAM: 16GB (probably same as Spark 2000), Disk: (probably same as Spark 2000)
2000- CPU: Marvell® OCTEON TX2® CN96XX 2.2GHz, 24 cores (SKU: CN9670), RAM: 16GB (option to upgrade to 32GB- also in datasheet, there are 2 SO-DIMM DDR4 slots on the board, both are used with 8GB 1Rx8 non-ECC 3200 MT/s modules), Disk: 512GB NVMe, PCIe Gen4 SSD