Overclocked my 4800MQ to 4GHz. with stock cooling

[Berryracer]

I just overclocked my i7 4800MQ to 4GHz. using Stock cooling on my Alienware 18 laptop

AIDA64 test with all 4 cores running at full blast gives me 90 to 100C (I don't know if that's dangerous or ok on the long run?)

But when I'm surfing the web / running @ 4GHz on a single core the temp is 75C , is it ok to run @ 75C all the time or will it kill my CPU?

Here are the settings I used to get my Alienware 18 with an i7 4800MQ overclocked to 4GHz using stock cooling:

BIOS Settings:

Intel® Extreme Tuning Utility Settings:

 

[el etro]

Notebook CPU temps can go higher than Desktop CPU temps, but i don't know the limit for non-stress applications.

 

[Headfoot]

I think its safe to say 100c is too hot. Desktop Haswell hard-throttles at 95c (iirc?) and begins to stop turbo well before that. I would suggest trying to reduce core voltage to 1.1 at the most if not lower than that and see what the highest overclock you can get on that voltage is. Voltage is going to drive temperatures more than frequency, though frequency does move it up too.

 

[dave_the_nerd]

My 4750HQ idles in the 30s (stock speed is only 2GHz though.)

But tat said, there's really, really no reason that an Alienware 18 should ever have higher idle temps than a Macbook, even overclocked - it's too massive and the cooling system is too beefy. (Unless you just turned off every power saving feature so the CPU never clocks itself down for idle.)

Running at 75C isn't a big deal, but if you're seeing 100C on a regular basis, you're probably not doing yourself any favors as far as longevity.

 

[Berryracer]

hmmm, im a bit worried now its at 75C while im surfing the web

maybe ill try 3.9 GHz. to be on the safe side

 

[aigomorla]

Notebook CPU temps can go higher than Desktop CPU temps, but i don't know the limit for non-stress applications.

notebook cpu's do not have an IHS to help cooling profile on them.

75C is just ridiculously too hot..

Notebook processors are not special, do not use special silicon, its the same as a desktop processor which has its IHS delid and power profile turned down, so it consumes less power and generates less heat.

What the OP did bypass all those features, turned it into a power guzzling, furnace which is way beyond spec.



And OP if I had a processor which hit 75C all the time, I would be concerned.
Id probably tear the thing apart, apply new thermal paste, get a notebook cooler, or something to bring those temps down by at least 25C.

and if it hit 100C, I think id cry, as that's the boiling point in water.
Who has ever told you it was safe for a PC to run at boiling temp of water?

 

[Headfoot]

hmmm, im a bit worried now its at 75C while im surfing the web

maybe ill try 3.9 GHz. to be on the safe side

You're wasting your time by focusing on the frequency. REDUCE VOLTAGE! And then reduce frequency if you can't run at 4.0 stably at the reduced voltage.

 

[VirtualLarry]

hmmm, im a bit worried now its at 75C while im surfing the web

maybe ill try 3.9 GHz. to be on the safe side

Was your mobile i7 quad-core chip too slow for browsing the web previously? (IOW, what's the point of overclocking it for web browsing.)

 

[hawtdawg]

I have an M17x that's old enough to have a C2Q. I have it OC'd to 3.2ghz, and prime95 will quickly make it hit 100c and throttle. gaming though, it gets into the high 80's. I've run it like this for years.

 

[Berryracer]

notebook cpu's do not have an IHS to help cooling profile on them.

75C is just ridiculously too hot..

Notebook processors are not special, do not use special silicon, its the same as a desktop processor which has its IHS delid and power profile turned down, so it consumes less power and generates less heat.

What the OP did bypass all those features, turned it into a power guzzling, furnace which is way beyond spec.



And OP if I had a processor which hit 75C all the time, I would be concerned.
Id probably tear the thing apart, apply new thermal paste, get a notebook cooler, or something to bring those temps down by at least 25C.

and if it hit 100C, I think id cry, as that's the boiling point in water.
Who has ever told you it was safe for a PC to run at boiling temp of water?

oops, I was thinking CPUs can run @ 100C all the time and its fine

I will forget about overclocking then, this HASWELL CPU isn't made for overclocking from what I`ve read on other forums

 

[el etro]

and if it hit 100C, I think id cry, as that's the boiling point in water.
Who has ever told you it was safe for a PC to run at boiling temp of water?

Was ever i said that is safe his temperatures? I telling i don't know the notebook processor temperature limits(even more for a 45w TDP part), indicating in my text that notebook temperatures can go higher.
Maybe even him know that he is on totally unsafe temperatures and that notebook operating temperatures are usually different than desktop operating temperatures.

 

[Zodiark1593]

Even with a Prime95 load, I consider 100c to be too high. I'd have thought the laptop chips would overclock better than the desktop versions though due to no ihs and supposedly running lower voltages than the desktop chips. Try bringing the voltage down a bit.

 

[dave_the_nerd]

Even with a Prime95 load, I consider 100c to be too high. I'd have thought the laptop chips would overclock better than the desktop versions though due to no ihs and supposedly running lower voltages than the desktop chips. Try bringing the voltage down a bit.

They probably would OC better - if they weren't in a laptop with a laptop cooling system. (Heat pipe cooler have the size of a Hyper 212, and a couple of 40mm fans.)

 

[tviceman]

I was considering buying a Gigabyte P34gV2, but ultimately the CPU operating temps at stock clocks (low 90's C when gaming) made me think otherwise.

 

[Headfoot]

berryracer are you even reading this?

YOU DONT HAVE TO STOP OVERCLOCKING. YOU JUST NEED TO REDUCE YOUR VOLTAGE TO STOCK LEVELS OR LOWER.

You can still probably get an overclock even at stock voltage or lower, and only have slightly increased temperatures.

 

[Zodiark1593]

They probably would OC better - if they weren't in a laptop with a laptop cooling system. (Heat pipe cooler have the size of a Hyper 212, and a couple of 40mm fans.)

Would be interesting to see how high one can get a ULV processor to clock.

 

[dave_the_nerd]

Would be interesting to see how high one can get a ULV processor to clock.

People did some crazy stuff with Mobile Bartons back in the day.

 

[Techhog]

They probably would OC better - if they weren't in a laptop with a laptop cooling system. (Heat pipe cooler have the size of a Hyper 212, and a couple of 40mm fans.)

I wonder if someone could mod one of these boards into a desktop for an OC monster.

 

[BonzaiDuck]

Berryracer.

Have you ever pulled that Alienware 18 apart with a screwdriver?

No? I'd be hesitant myself for what you paid for that laptop.

Next -- I see that the processor Turbo's on its own to 3.5 Ghz. If it's even practical to boost it to 4.0 on the core or cores limited to that chip, it shouldn't much matter for your daily -- even gaming -- needs.

Just my view on this, but I wouldn't OC any processor until I'd reviewed the Intel spec sheet on it carefully. Particularly, you'd want to find out what the thermal and voltage limits are.

I see here and there people OC their laptops, high-end, low-end and in-between. To me, it's not worth the trouble unless you can do it at the same or lower than stock voltage, and you're not testing the limits of the compact cooling system of a laptop. Those of us in the desktop OC crowd know that you want to use aftermarket heatsinks and cooling solutions, some quantum-levels above others. There's barely any room in a laptop for such modifications. In fact -- there isn't any room in a laptop for it.

Maybe -- take in a movie-series like "Halt and Catch Fire," to see what the industry had to do in order to put so much processing power and performance into a little package "with a handle on it."

 

[Berryracer]

Berryracer.

Have you ever pulled that Alienware 18 apart with a screwdriver?

No? I'd be hesitant myself for what you paid for that laptop.

Next -- I see that the processor Turbo's on its own to 3.5 Ghz. If it's even practical to boost it to 4.0 on the core or cores limited to that chip, it shouldn't much matter for your daily -- even gaming -- needs.

Just my view on this, but I wouldn't OC any processor until I'd reviewed the Intel spec sheet on it carefully. Particularly, you'd want to find out what the thermal and voltage limits are.

I see here and there people OC their laptops, high-end, low-end and in-between. To me, it's not worth the trouble unless you can do it at the same or lower than stock voltage, and you're not testing the limits of the compact cooling system of a laptop. Those of us in the desktop OC crowd know that you want to use aftermarket heatsinks and cooling solutions, some quantum-levels above others. There's barely any room in a laptop for such modifications. In fact -- there isn't any room in a laptop for it.

Maybe -- take in a movie-series like "Halt and Catch Fire," to see what the industry had to do in order to put so much processing power and performance into a little package "with a handle on it."

yeah true bro, not worth the hassle and I wouldn't wanna open my $5000 USD laptop

The CPU overclocks to 3.7 GHz. on its own due to Turbo Boost not 3.5

 

[BonzaiDuck]

yeah true bro, not worth the hassle and I wouldn't wanna open my $5000 USD laptop

The CPU overclocks to 3.7 GHz. on its own due to Turbo Boost not 3.5

I'll defer to you on the particulars. I think it was a matter of how many cores are "boosted."

You may eventually open up the lappie to sate your curiosity. Probably look at maintenance diagrams and photos -- first. Get the right size and precision + -head screwdrivers and torx drivers, before violating the female end of the fasteners.

Just don't take anything apart that you can't put Humpity-Dumpity together again -- or tip off the official repair center folks of a warranty violation when the warranty still applies.