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***Official Galaxy Nexus Pre-Release speculation thread**

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HanSolo said:
Maybe with such a thin design, and a metal/kevlar casing, the phone is producing as much heat as any other phone, but it's got to come out somewhere?
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This is what I'm wondering, that there isn't much at all between the SOC and radios and the screen? Plus, what is the thermal conductivity of kevlar? This is something that the engineering effort identified early!
 
AntimonyER said:
I thought someone had shown the spec sheet showing clock speed of a 4430 was 1 GHz? My bad if I was wrong.
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Actually you are 100% right, the 4430 is a 1GHz processor according to TI. Maybe there is a 4460 in there after all?

OMAP™ 4 Platform - OMAP4430/OMAP4460

DBGwS.png
 
They advertised a steel frame construction, steel is not as efficient as aluminum in conducting heat, so the heat can't escape to the periphery of the frame as quickly, so is instead concentrated closer to the heat source.
 
HanSolo said:
Maybe with such a thin design, and a metal/kevlar casing, the phone is producing as much heat as any other phone, but it's got to come out somewhere?

The one that I handled wasn't as hot as you're describing. It wasn't like a stove top that left marks on my fingers. But yes, it was quite uncomfortable. I kept thinking that this phone isn't going to last very long.
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FWIW - the terms for that are heat-sinking and thermal capacity - the heat has to go somewhere (it has to have a sink) and it will go into the nearest structure(s) with the capacity to handle it.

Possibly it is the thinness causing everything to go right to the case - not sure - the SGS2 was on the thin side as well, so that supports that idea.

OTOH - my by-now-infamous Evo 3D, running both cores for hours on end, modding here, watching tubes, etc, cable plugged in, constantly going through charge cycles - after 6 hours of that one night, just as a heat experiment, I registered a steady temperature of 98.6 degF - a pretty famous number. And I felt no heat sensation either way.

So - whatever was causing that - not good, not good at all.

AntimonyER said:
4430 being overclocked + thin phone = less distance between hot stuff and screen, Yeah I am not surprised.
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Please reconsider.

As I designer, please permit me to re-express that:

The designers fully expected that they'd just built a handset where they were so careless in heat sinking that it was unfriendly to the human hand.

I think someone had better be surprised somewhere, just my opinion.
 
cereal killer said:
4430 is not overclocked....heat can't comment on. Wasn't my experience. warm yes hot nope

dawnyrae was right. They are not releasing the RAZR early via pre-order. They will arrive friday...grrrrrrrrrrrrrrrrrrrrrrrr Roaarrrrrrrrrrrrrrrrrrrrrrrrrrr
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So are you thinking of canceling the pre-order and just going to the store on the same day, or are you waiting to see if UPS shows up in the morning?

Stigy said:
Actually you are 100% right, the 4430 is a 1GHz processor according to TI. Maybe there is a 4460 in there after all?

OMAP
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Steven58 said:
Hot. Really hot. Unpleasantly hot. Uncomfortably hot. I was shocked.

I don't see how they let this through. I couldn't understand why these two Razrs were hot, one was uncomfortably so, and the other was just hot. None of other phones in the stores were hot. Other phones' screens were on but none of them were hot, though. Strange.
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They let it through so they could release before the G-Nex.
 
Stigy said:
Actually you are 100% right, the 4430 is a 1GHz processor according to TI. Maybe there is a 4460 in there after all?

OMAP™ 4 Platform - OMAP4430/OMAP4460

DBGwS.png
Click to expand...

AntimonyER said:
Thanks, glad to know I am not crazy for thinking I had remembered that.
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There's still a difference between overclocking the 4430 to get to 1.2 GHz as opposed to the batch of 4430s that were binned with stable 1.2 clock speeds. I wouldn't imagine they'd sell it with an overclocked SoC.

Same thing on the 4460 in the SGN. It's specced on TI's site with 1.5 GHz, but that doesn't mean it's underclocked(it may be, don't get me wrong). It may just be some 4460s that have been 1.2 binned.

And no, there's not a 4460 in the RAZR. It's up on Motorola's website with it clearly stating 4430.
 
AntimonyER said:
Thanks, glad to know I am not crazy for thinking I had remembered that.
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I always thought it was 1.2GHz from what I read too.

Strange that they would overclock the processor from the factory like that. Just seems like its calling for heat issues then.
 
Ytram said:
There's still a difference between overclocking the 4430 to get to 1.2 GHz as opposed to the batch of 4430s that were binned with stable 1.2 clock speeds. I wouldn't imagine they'd sell it with an overclocked SoC.

Same thing on the 4460 in the SGN. It's specced on TI's site with 1.5 GHz, but that doesn't mean it's underclocked(it may be, don't get me wrong). It may just be some 4460s that have been 1.2 binned.

And no, there's not a 4460 in the RAZR. It's up on Motorola's website with it clearly stating 4430.
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Would a 4430 binned at 1.2 even thought TI's website says up to 1GHz cause heat issues then?
 
EarlyMon said:
That is just seriously disturbing, all the way around.

I don't recall AMOLED screens running that hot, and I've said how to expect reasonable coolness based on my dual core.

There were a lot of initial complaints on high heat when the SGS2 came out, people without the problem were starting flame wars on it (no pun intended, implied, or made).

Known top sources of heat in a cellphone, in no order: processor SoC, 4G radio SoC, and battery.
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Know what you mean about the SGSII being hot as I had one. A firmware update thankfully fixed that though.

The Razr has the non removable battery correct? Sounds like Moto should maybe rethink that. ;)
 
Stigy said:
Would a 4430 binned at 1.2 even thought TI's website says up to 1GHz cause heat issues then?
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Yes. Eventhough they wouldn't admit to sending out an overclocked processor, the 4430 was designed for 1GHz. 1.2 GHz is overclocking that processor series, stable or not. It will produce more heat. But, also, like I said in an earlier post, Kevlar on the back is probably contributing to the heat escaping the device through the screen causing the screen to heat up.
 
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