how hot should i let my 4870 x2 get?

[dmxdex2020]

I am Ocing my 4870 x2. I have set the core to 800 and the memory to 1000 at 1.3 volts. I am testing the stability with furmark. Both gpus reached 79c after about 20 mins. How hot should i let my 4870 x2 get? i have the tri-fan edition from asus which has 3 fans attached.

 

[jorzeh]

mine has no oc and sits around 90C under ccc and around 70 if i use 50% fans so.. seems fine.

 

[dmxdex2020]

ok well my oc was bad cause it has crashed dont know why not sure how much voltage is needed for 800 core and 1000 mem

 

[{SAS}TB]

Keep an eye on your VRM temps as well - they will soon hit 120 and crash your card(s) / system