Some quick thermal pics of P2D2 with silicon loaded (glob top):-
1. Normal orientation with glob top of chip pointing upwards - see FLIR0496 - 72 degrees C
2. Upside down orientation with big ground plane pointing upwards - see FLIR0497 - 58 degrees C. The silver pad on the reverse side of the board doesn't play by the usual emissivity rules, hence the dark square, but this will actually be the hottest area.
3. (no cap) but side-on orientation had a peak temp around 70 C.
These test using the torture test suite running 8 cogs at 180 MHz. P2D2 was taking 280mA at 5V overall. The XCL220 reg hardly raising a sweat
Camera is a Flir C3. Its not designed for closeup circuit boards like the more expensive $3k flirs, but actually works fine. However the IR and visual cameras are about 20mm apart, and this causes an offset between the visual (edges) and IR (colours) in the combined image that it outputs, when you use it for close up work.