You are missing my point, I'm not gonna start a this gpu with this miner/kernel do this temp debate ... its all bullshit.
Read this part of my post again.
... if an algo keeps the gpus cooler that mean that the miners is still not optimized and is not using your gpu full potential ...
Using longer extenders, extra fans, a AC, keep the rig in a north sided room, ventilation .. etc etc , those things keep your gpus cooler not the algo ..