hmm perhaps the margin of improvement wasn't as big as i thought, i have since taken it apart twice to add more thermal paste. temp wise i manage to drop it by 5c on a good day, but the fan definitely dropped by 500rpm, so at least now its more quiet.
i guess there is no way around this, looks like i'm gonna have to upgrade soon, can't even run chrome without this thing becoming an oven on my desk lol