Intel Core i5 480m (i3 380m)- Getting too hot! Reduce voltage?

[audianer]

Hi!
I have a Samsung R730 with i3 380m (2.53GHz without turbo). It got very warm, I thought it was the paste and when I upgraded the CPU to i5 480m (2.66GHz and 2.93GHz Turbo) I replaced the paste.

Unfortunately, I have over 90 degrees after a few seconds under full load and the CPU reduces the clock.

If I disable the "Turbo" the CPU can keep the performance longer at about 75-80c.

I know Throttlestop doesn't support the i5. Are there alternatives? thank you

 

[SL2]

Did you clean the fins on the cooler before putting it back?

Does the fan run like it should?

 

[audianer]

I removed the rest of the pad from the cooling surface and cleaned it with alcohol. Likewise with the DIE.

The fan revs up like a 747 on Prime95.

 

[SL2]

No, I meant the fins on the heatsink. They should look like this, you should only see metal between the fins and nothing else, no dust:

In worst case they look like this, seen from the inside closest to the fan, the dust is usually not that visible from the outside of the laptop:

Also, replacing pads with paste is a risky business since paste may not compensate for the thickness of the pads.
It all depends on the type of pad, although this is usually less of a problem with CPU's, and more of a RAM issue.

 

[audianer]

Yes of course! Cleaned the whole unit and blew out the cooler and fan with compressed air.

 

[SL2]

Well then I don't know. The fan works, obviously, and you had heat issues before the upgrade.
I can't see any pads like I described before either.

 

[audianer]

Ok then I was wrong. I thought it was a pad because there was so much paste sticking all over the place. Apparently paste.

 

[FreedomEclipse]

What thermal paste did you use?

Also make sure that when you mount the heatsink back on, that you mount it CORRECTLY. Sometimes there are these standoffs or 'metal nipples' that are poking out that are supposed to help guide and hold the heatsink in place from shifting when you screw it down. Maybe your heatsink isnt mounted correctly and making good contact with the CPU so just double check it.

We've all made that same mistake before so its nothing to cry about.

 

[unclewebb]

I know ThrottleStop doesn't support the i5. Are there alternatives?

The 1st Gen Core i CPUs do not have an integrated voltage regulator so you will not find any software that allows CPU voltage control.

 

[audianer]

The only thing i can change ist TDP and TDC. Whats that? What did it to if i change from 25 so. for example 20?

 

[unclewebb]

TDP and TDC. Whats that?

These settings control the amount of power available for Intel Turbo Boost. Your i3 processor does not use any turbo boost so these two adjustments will not do anything good or bad to your CPU.

 

[audianer]

@unclewebb : I dont have the i3 anymore. Now there is a i5 480m.

 

[unclewebb]

Increasing the turbo power limits will ensure maximum turbo boost when fully loaded. Decreasing these limits reduces full load turbo boost and this can reduce temperatures.

Only you can do some testing to find out what values will work best for you. Keep a close eye on the ThrottleStop reported multiplier and CPU speed.