Hot summer is coming so I decided to do some ghetto mods with Thinkpad T43.
Took some copper, plastic insulator, Russian glue "Moment"(due to its high temperature resistance and flexibility) and disassembled some DVD-RW drives and other hardware trash to get thermal stripes and small rubbers.
1st was North Bridge - opened crystal without any cooling seems hot at load.
Took insulator, cutted out hole for crystal and applied it to NB to prevent short circuit(some capacitors on it). Placed thermal stipe on crystal. At one diagonal applied glue between NB and plastic insulator, at other between insulator and copper plate - so plastic insulator works also like clamp. After these placed rubber part from DVD-RW to make some pressure by trackpoint circuit on keyboard. Final view:

2nd was South Bridge - known SB problem in T43 series

I measured free space there and got this:

So copper plate have been done.
Other way was to place big thermal stripe(can be found in PMMX/PII CPUs from old thinkpads), also placed white plastic peices at each corner to apply glue and fix plate.
During experiments I found that clockgen is very hot to touch:

So put thermal stripe and piece of insulator on it too.
Glued copper plate, placed rubber piece for better pressure. Final view:


Its too bad NB and SB of i915 chipset have no thermal diode, so cant say difference...
But with external thermocouple I got 55C and 53C on copper plates of NB and SB respectively while playing youtube fullscreen using Wi-Fi.
PCI sensor seems not near SB because no difference in temp - 47...52C. But touchpad became hotter - better heat dissipation?
Thank you for your attention!
