PS3 what is 90nm cechc04 overclock "safe limit"

[Samppa109s]

I have old ps3 that I'd like to overclock, has someone got some knowledge on how high you can go without it immediately implouding and just dying. I think I have good temps now i fan at 33% and it doesn't go above 58 in last of us

 

[Samppa109s]

I know they have bad underfull stuff and its always risky. maybe someone has done it and knows something about something and could tell me something.

 

[vFxMz]

Usually a small and safe OC is 550/700 or 600/750 BUT:
Don't do that on these models, better grab a slim 25XXX for that purpose if you want, honestly with a 90nm i would leave as it is, the other problem are the nec tokins, i've tested on my CECHK and at 600/750 its unstable for the tokins, error cod 1002 wich is nec tokin power issue, maybe replacing them with something new and better would do the trick, but honestly for the cost i would grab a slim.

 

[Inali]

I have a CECHA with replaced tokins as of less than a year ago and delidded. 600/750 has been ok for me for the ~20 hours of various games I have played with it overclocked. 4.91.2 Evilnat Beta 9 PEX 600/750. Max temps I allow is 65C.