Question Worried about RX 580 overclock

[Borko1]

Recently I've bought a Sapphire RX 580 Nitro+ 4GB Edition and I decided to overclock it to boost performance by a bit. The thing is, on the manufacturer's site it's stated that engine clock can be boosted up to 1411MHz, but I managed to get it stable at even 1550MHz core clock without increasing the voltage. Does this mean that the GPU mustn't be overclocked more than 1411MHz, or otherwise it will decrease it's lifetime? Can I stay at the current clock speed? By the way, temps are very good, they don't exceed more than 55 degrees Celsius while gaming and full load and fans are working on 50% max. I've been gaming whole 7 days with this clock speed and there are no issues so far, but I'm still worried about it. Also, a buzzing noise can be heard from PSU when PC is off. What do you think about this? Thanks in advance.

 

[CountMike]

Recently I've bought a Sapphire RX 580 Nitro+ 4GB Edition and I decided to overclock it to boost performance by a bit. The thing is, on the manufacturer's site it's stated that engine clock can be boosted up to 1411MHz, but I managed to get it stable at even 1550MHz core clock without increasing the voltage. Does this mean that the GPU mustn't be overclocked more than 1411MHz, or otherwise it will decrease it's lifetime? Can I stay at the current clock speed? By the way, temps are very good, they don't exceed more than 55 degrees Celsius while gaming and full load and fans are working on 50% max. I've been gaming whole 7 days with this clock speed and there are no issues so far, but I'm still worried about it. Also, a buzzing noise can be heard from PSU when PC is off. What do you think about this? Thanks in advance.

Temperature and high voltage may decrease life span, if you stay within those limits, no problem.

 

[Borko1]

Any more opinions on this?