I've been looking into a few FPGA board options and stumbled across a much cheaper board similar to the Xilinx KC705.
The FPGA is a XC7K325T with the following specs:
Logic Cells - 326,080
DSP Slices - 840
Memory - 16,020 kb
You should be able to find more details on Xilinx's website
The board also has 128 MB of flash and 8 GB of DDR3, if that's helpful.
Would this board be capable of profitable mining? I know that SHA-224 and Blake2b would fit on, Keccak should too, but have no idea what the hashrate and profitability would be around. What other algorithms can fit on to it? Hashrate estimates?
Im not sure if you realize, but there is a drastic difference between this and the VCU1525.
1. Almost 8 times less logic cells.
2. 20x less on-chip memory
3. 7 series fabric (28vs16nm) much much lower clock speeds (~250 vs 600 MHz max)
4. The flash is for configuration
5. DDR3 is bandwidth IS nice.
Over all Keccak you could maybe do 6-7 pipelines @ 200Mhz. - 1200-1400 MH. How cheap is cheap?.
Overall the XC7K325T based board is about 16x less power than a VCU1525.
If youre looking in that range, I might as well start taking pre-orders for my M.2 accelerator since its ready. It has a 200k LE 7 series chip and 1GB of DDR3 + 4x PCIe (2.0 atm). $329 for the very fast version, $199 for the lower end (100k LE/512MB DDR3). Uses a M.2 M-Key / Nvme slot, or a $10 PCIe adapter.