Anyone have overheating issues with 14" Enigma VIII (i7-7Y75) ?

d4005

Bronze Level Poster
I'm considering getting one of these but am feeling a bit unsure due to my past experience of PCS laptops and their relationship between heat and fan noise. My current PCS laptop will exceed 100°C core temp in a few seconds if I let the CPU go into turbo mode and the fans sound like a 747. So I'm willing to sacrifice power by downgrading my CPU in favour of silence.

I know that these KabyLake CPUs do have a turbo mode and their power is limited based on current core temp. I'm fine with that. I simply want the most power possible without fans.

Anyone here got one of these and seen how it performs regarding boost and temperature and the limiters kicking in ?
 

Oussebon

Multiverse Poster
The i7-7Y75 is a 4.5W part. Not 45W, 4.5W.

I've no idea how much noise that chassis makes when cooling under load, but there's not much heat that needs getting rid of really.

These parts have a turbo boost, but it's not just thermal limited, it's power limited. It'll boost to 3.6GHz from the 1.3GHz base clock briefly, and then dial itself down probably much closer to the base clocks. It's not designed for performance, rather low energy consumption.

My current PCS laptop will exceed 100°C core temp in a few seconds if I let the CPU go into turbo mode and the fans sound like a 747
Clean and repaste?
 
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d4005

Bronze Level Poster
The i7-7Y75 is a 4.5W part. Not 45W, 4.5W.
I've no idea how much noise that chassis makes when cooling under load, but there's not much heat that needs getting rid of really.
In theory, with no fans and only SSD allowed, it should make pretty much zero noise.

The i7-7Y75 is a 4.5W part. Not 45W, 4.5W.
These parts have a turbo boost, but it's not just thermal limited, it's power limited. It'll boost to 3.6GHz from the 1.3GHz base clock briefly, and then dial itself down probably much closer to the base clocks. It's not designed for performance, rather low energy consumption.
Yeah I've been researching it for a while. I'm not looking for a monster powerful machine, I'm simply wanting the most performance possible while still being fanless (passively cooled). I was hoping to hear from someone who has this machine with this processor who can say something like "it'll turbo boost at max speed for about 5 minutes before ramping down to lower boost levels and by 10 mins it'll be down as low as base clock until you stop using it at 100% cpu. What I don't want to hear is that after 15 seconds of max clock boost it already drops back down to base. That'll be disappointing but I may still end up buying one.

The i7-7Y75 is a 4.5W part. Not 45W, 4.5W.
Clean and repaste?
Naaah, I'm retiring this laptop (the one in my sig) forever.
 

Oussebon

Multiverse Poster
"it'll turbo boost at max speed for about 5 minutes before ramping down to lower boost levels and by 10 mins it'll be down as low as base clock until you stop using it at 100% cpu. What I don't want to hear is that after 15 seconds of max clock boost it already drops back down to base. That'll be disappointing but I may still end up buying one.
User experience and insight is great. At the risk of sounding like too much of a naysayer I've not seen anyone ask for advice on the chassis, so unless there's a forum lurker who happens to own one and can spare the time to sign up and post, you might not get that kind of feedback.

The i5 8250U which is a ULV CPU (15W TDP) in my Dell lasts about 30 seconds at full boost clocks (3.4GHz) on cinebench multithreaded, and then goes down to 2.6? 2.4? ish more or less indefinitely. The base clock is 1.6GHz.

I'd be surprised if the Y Series CPUs were more generous, rather than less, with their boost clocks. These are very, very low power parts and they won't be able to sustain boost clocks and stay within whatever Intel's TDP formula is. It's rocking half the cores but with a third of the TDP.
 
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