The 'problem' with these types of cards is that they are passively cooled and therefore have more conservative clock speeds. That puts them well below gaming GM204 cards. Ok you'll have two on one card, but for a magnitude of the price higher.

I tried ethminer on a Tesla K80 (dual GK210) the other day, and couldn't get more than 27MH/s out. By comparison, a single GK110 (fairly identical to GK210) on a GTX780 does about 17.5MH/s with stock clocks, 20+ Mh/s OC-ed  

But if you really want a solution you can put in a blade server, you could also look at Grid K520 (dual GK104). You can buy two for the price of a single M60, and will hash ETH at 48MH/s (12MH per core). Or simply launch them from AWS g2.8xlarge instances, those are dual K520). But even if you run them from spot instances, it won't be profitable.