Hashrate dropped adding 1 5700

[smoothyvo]

I had 1 5700 hashing at 53MH then added 1 more and now its at 45 and 50 MH. I changed nothing else. any ideas of where to start?

[HaloGenius]

Your GPU memory raise 104C and card started throttling and as result loose hashrate

[htdavidht]

HI, I am new to this… how can I bring my temperature down? is there something in the settings?

Thanks.