Do yu think I shuld de-clock my CPU?

59C at 100% load?

so is it already OC?

if you want to use it for a few more years, the lower the temperature the better

59°C is a bit on the high side, specially if you notice that the Phenom2 series temperature sensors are regognizing lower temps as they are in real.

How much volts you need for 4ghz? 1.425v?

Try to lower it.

Many Phenom2's are fine with much lower volts @ 3.7-3.8, nearly same performance but cooler.

Which cooler are you using?

Running Phenom 2 X6 1090t @ 4ghz 1.4v cooled by Thermalright Macho, getting about 50 degrees.

62°C is max Temperature by AMD, doesnt matter though, but i would go lower or get a decent cooler.

Sounds like a showoff topic to me ...

Yeah, showoff with an extremely old cpu.
Of course.
If you dont want, or are not able to help - stay away from this thread please.
But stop posting bullshit.

CPUs can handle up to 90°C without a problem... I don't know about AMD CPUs but I would not go over 1.3v with my CPUss

lol i got max temps over 80 and it's fine

imho just lower clock. you will get lower temps, means more quiet cooler.

youre getting these temps will a clean case and a properly seated heatsink? just the act or reseating it and clearing out all the dust can drop your temps a fair bit.

If you set the CPU at the normal clock then you will be to able to restore the overclock configuration if needed, that is the problem? If you can restore it, then just try. You surely get temperature lower, but especially you save money due to energy saving features of your CPU.