No, a Quadro P6000 ($4,999) does not out perform a GTX 1080 Ti ($699) for mining, they are basically the same cards compute-wise.

This thread is super interesting to read. As others have stated, it is interesting to see these ASIC, FPGA, GPU cycles and discussions happen over the years.

Are now modern FPGAs (and the ones the OP uses) more suitable than the ones that were used in the previous attempts? Are FPGAs now in a sense more flexible in terms of mining so it makes sense to focus development on those?

Both the VCU1525 and XUPP3R have a circuit that will shut down the FPGA power supply if the temperature exceeds limits.  This doesn't prevent you from trying to pull too much current for a short time though.

Another important note for people considering this hardware.  The VCU1525 has a fixed core voltage of 0.85V.  The XUPP3R from Bittware is more flexible and you can change the core voltage from 0.74V to 1.11V, which allows a much greater flexibility in terms of over-clocking the FPGA.  For memory intensive algorithms, a higher voltage will produce faster hash rates, vs. for power limited algorithms, a lower voltage would likely produce better hash rates.

I stand corrected, I was not aware of the existence of that flag! I knew you could read the XADC, but did not realize there was a bitstream flag. Good to know, although I don’t know if I would rely on that as your only protection.

I appreciate the wealth of knowledge and skill coming out on this forum regarding the FPGA work.

Regarding workstation GPUs, I said they could be useful for mining, and can work alongside FPGAs given the direct access to their memory, not that they were better than normal GPUs for mining or that they were like FPGAs. You can however very often find large batches of the older generation passive cards for cheap as most people don’t have the ability to use them. I last paid $130/ea about a month ago for a bunch of older FirePro workstation cards that are now hashing at 24MH ea.

You are going too far to look up some useful information, but it is on the top. Read the "VCU1525 Acceleration Platform User Guide", on page 47. It says fan controller IC has a die temperature sensor connected to FPGA-s DXP/DXN pin, and has an TCRIT#output which connected to the supervisory IC and it will shut down the FPGA, when overheated. It is independent from the FPGA and FPGA's SYSMON.

It looks like the Xilinx's card is a properly designed FPGA board

Hey nice writeup, really interested.
Wondering if Bittware or Avnet taking bitcoin for purchases?

Also if you make a bitstream for the VCU1525 is it going to be working for the XUPP3R-VU9P?

I like to do spec mining on many coins, so I'd like to have the biggest option set available (within reason).

what speed/type DDR4 in these fpga?

have you tried porting sha244 into an asic built for sha256?

I had a conference call with Xilinx before announcing this project and they agreed to transition the VCU1525 into a production product for a slightly higher price; the production version will be released in June/July, in much higher quantities.

Regarding the question about bitstream compatibility, the answer is no, a bitstream built for VCU1525 will not work on the XUPP3R.  The clock & USB UART are on different pins, so I must 'build' two versions of the bitstream, one for each card.  Although the change in the code is tiny, it still takes the tools 5+ hours to re-run place & route, with multiple runs needed to get a success.

Can you inplement a double set of interfaces to support both boards by the single firmware?
BUFGMUX_CTRL can be used to select the clock signal, if clocking assignment is different.
It is probably possible to build one firmware for both board.

Went and tried to find the max amp on the XUPP3R and no data was available. Best I've been able to figure out is that you're limited to 75W on the 6 PIN aux and 75W on the PCI-E. This would be less than the VCU1525 which has 8 pin (150W) plus PCI-E (75W). Even if you're running at 1.1V, the max amps you could pull for the XUPP3R is 136A. Do NOT buy the XUPP3R for mining. Even with variable core voltage it's power supply is shite compared to the VCU1525. Even the VCU1525 at 160A, is quite limited in the maximum amount of 'things' you can have on in the FPGA at one time. You'll hit over 150A 0.85v using only 70% of the logic with all memories powered down.