As some of you know from the other forums, I recently put together a computer from 'spare parts' that has four Nvidia Quadro K2200 GPUs in it. I've been testing various GPU projects to see which ones experience any performance reduction due to the lower bandwidth on two of the PCIe slots in the system.
I am currently testing Einstein@home and noticed that these four cards together appear to be producing about 100-150K credits per day more than my old R9 280X was getting before it had to be retired. I think this is significant because the 280X was rated to pull about 250 watts at full load, but these Quadro cards are only using about 100 watts total (20-25 watts each) at full load.
![Smile :)](./images/smilies/icon_e_smile.gif)
These cards are too old to run the new apps, so they are not getting higher scores because of that.
I'm not entirely sure since I'm finding conflicting info online, but I believe that these cards do support double-precision computing, which would explain why they get decent results running Einstein. After I let them run Einstein for another day or two to get good averages for my PCIe slot testing, I'll switch them over to MilkyWay to see if they get similar results there as well.
I'd rather have four 3000 series RTX cards, of course, but these were free, and perform surprisingly well considering how little power they use!