^You aren't only one with Tonga.
It's true that this chip is inferior than Tahiti's, but man 160 hash/s is pretty low. Make it at least 220-230 h/s.
It looks like there's at least 4 of us with Tonga chipsets who have replied to this thread. Claymore can you please see about making some improvements for this chipset? Sending a little love towards the "budget" miners using Tonga cards would be much appreciated. These cards really are capable of a lot more speed. Thanks again for all the hard work you do for the community!
And much much more people out of btc talk.

I personally know a few guys who have more than 50 Tongas in mining farm.
Everyone who have problems with electricity and have tahitis gpu, sell them and buy new tongas (no money for polaris).