I will say more after more testing
Fed up w/ trying all the low profile :banana::banana::banana::banana: , so I grabbed an AL heatsink from digi-key (had it for awhile) bent it up to allow my, err I mean her x700 to fit then epoxied (AS) it onto the chip on my wife's future 'puter, temp after 1 hr of occt is 38c (but it's in the cool basement. Closing the case DROPS the temps from 40c (guess the flow sets up better :D )
Will be bringing it up next week to the 'real world' and see what happens - my target temp is < 45. If needed I can always point an 70-80mm fan there :D
Pics if successful