Model           Sol/sec      Power
7970M 2GB    145           100

A 7970M is equivalent to a 7870 desktop clocked at 850/1200 and I run these at stock speeds as my laptops cooling power is limited and the memory will not clock even 5 more Mhz
Settings for mining are all standard but intensity is set to -i 3.
[EDIT]
I am also running drivers 17.3.1, sometimes mining will only start on one card or one of the cards is very low, around 50 sol/sec and to fix it:
1. I stop mining.
2. Stop MSI Afterburner or any monitoring software I have.
3. Enable Crossfire.
4. Disable Crossfire.
5. Startup Mining and I have full speed on both cards again.

I have never tried re-enabling my hardware monitors as it just adds complexity I don't want to deal with.

This is my first post, but I have been using this forum for a while.  I currently have an Alienware M18 R2 with two 7970m's. These cards are rated at 100W a piece and I am currently pulling right around 300Sol/s with 12.4 but I had to make a configuration change.  When I moved from 12.2 to 12.4 the default intensity was changed from 3 to 4, as my cards only have 2GB of memory on them this intensity was too high and I dropped to about 200Sol/s. For ALL revision before this that I have used, the intensity was set to 3 by default.  So look to see if your intensity has changed if you are getting lower Sol/s then you were with earlier revisions.  Also, going from 12.2 to 12.4 with intensity set at 3 I went from about a peak of 285 Sol/s to, as stated above, about 300 Sol/s.

Thank you Claymore for all your work and I gladly donate that dev Fee.

HSL