i mean the opposite cooler - the one without fan.
if they are hashing several days its as hot that i dont want to touch it.
If you are running at 700Mhz and they are so hot that you barely can touch them you have your core and mem way too high!!
You need to dial mem and core as low as you possible while they still keep working.
Mine are really cool and I am running 6x924Mhz and 5x832Mhz (without stockfan) from one hub. Temp on the small heatsink is around 30degs C.
The one you think you fried, set the clock to the lowest and see what happens.