hi, i ben on 4.30 cfw to 3.55 to 4.21 rex<> to DEX. on DEX its stabile on CPU 60c' RSX 63C'
i play 3-4 hours then let it cool down 1 hour, then check toolbox. no problems.
the more the cfw need to run ( game, mm , ..... etc) the more it uses the capasity, and will get hot.
u need to check, and find a stabile line, of you play 2 hours check it again. play 30 more minutes, and check again. then you see if it raise (how much diffrence it is between check)
sry english x)