CPU tuning after thermal mod

[Rubick]

Hi everybody!

As I said in previous post I’ve bought a new i7 mix plus recently and I wanted to squeeze it as much as I can so I did the thermal mod with very good results.

Before I tested with aida64 burning test and got about 90 degrees on the CPU part and after some modifications (a 20x20mm copper sink and a 1mm thermal tape on the aluminium part) I get just about 64 degrees while burning for 10 minutes… That’s great, of course but:

As far as I see the antutu benchmark stills more or less the same (211000 vs 213000)

The frequencies still going down after a short time burning it even the temp is down… I wanna mean: once you start the burning tests goes up to 2.4-2.6ghz but in a few seconds goes down to 1.2 on both cores and keeps there with a fixed multiplier of x12… Exactly the same behaviour as before the modding.

I also realised that it raises the voltage to 0.9v at the beginning of the test and when the speed goes down to 1.2ghz also lowers the voltage to 0.7v… Exactly the same behaviour as before the modding!

So… Does it really deserve the risk of opening the tablet and have a quite hotter backplate???

I suppose that there’s a kind of limitation on the BIOS part so I suppose it can be configured manually for tuning it to the new thermal situation, isn’t it?

Maybe is the RAM modules that are limiting the tuning up? (I didn’t put any thermal pad there and maybe I should have done it, I don’t know).

Does anyone have any clue? Any experience tuning up the BIOS setup?

Thanks for reading and enjoy modding!

[Rubick]

Well, I’ve tested adding a thermal pad strip (1mm thick) above the RAM modules and I repeated the test: same result.

Here you have some screenshots to see what I’m refering:

First one, the temperature graph, as you can see there’s no thermal throttling issue at all neither high temp, just about 64 degrees after +10min.

Second one, the speed clock, as I told before. At start raises to 2.6 then goes down to a fixed x12 multiplier resulting ~1.2 ghz

The last one, the voltage, at the same time it lowers the cpu speed it also lowers the volts supplied to the cpu.

I think we can go up until it achieves the 90 degrees in case we need it as it supports (messing around the BIOS I’ve seen it halts at 95 degrees with passive cooling so it shouldn’t be a problem).

Does anyone know how to do the trick?

I’m sure it’s about BIOS config or maybe any Intel app to tune it but I don’t know how to do it 🙁

Thanks mates!

 

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[Cloppy]

The reason is that we have a 1GHz cpu: http://ark.intel.com/products/95449/Intel-Core-m3-7Y30-Processor-4M-Cache-2_60-GHz-

It will only stay above that under very certain conditions, time being one of them. That’s why you can tweak the different bursts duration in XTU.

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