There are quite a lot of rumours circulating on the interwebz about possible X11 FPGA’s. As you may or should know, FPGA’s were used initially for Bitcoin mining, achieving speeds of upto 400MH/S per board, drawing only about 17 Watts of electricity.
One of the upsides of FPGA’s is that they can be reprogrammed to perform a different task. While Scrypt mining was never achieved at profitable rates, because it is too memory intensive, that doesn’t mean other mining algorithms won’t work.
X11 is one of the mining algorithms which isn’t relying on hardware memory, so it could be a good fit, it people can get it to work. Once again, no one saying it can or can’t be done, this is all still speculation at this point.
The reason why people jump to these conclusion is because of the immense hashrate some of the X11 pools are showing for certain coins. For example, I’m seeing people mine X11 coins at a rate of 440 Mhash/second.
To compare, I have two gpu’s, a 7970 and a R9280x. Both cards are producing 2.25 Mhash/second, or 4.5 Mhash/second in total. In order to achieve 440 Mhash/second, you’ld need about 100 GPU’s of some of the latest models.
Is it safe to assume no one has those? Not at all, I’m pretty sure there are plenty of people who run with more than 40-50 GPU’s for mining rigs, so 100 isn’t too far of a stretch. Granted, it would be very expensive, but that’s not our concern.
Keeping in mind that mining through the X11 algorithm gives you three times the hashrate of normal Scrypt mining, we shouldn’t jump to conclusions too quickly. I’m not saying there is no such thing as an X11 FPGA, I’m saying we just don’t know at this point.
Yes, it would be awesome to have X11 FPGA’s right now & mine a ton of coins for ourselves. Who wouldn’t want to do that? But until we’ve seen one, in action, for ourselves, I can not confirm the rumours are true, and neither should you.