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X-class ThinkPad that doesn't run hot?

X230 and later series specific matters only
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Edward Mendelson
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X-class ThinkPad that doesn't run hot?

#1 Post by Edward Mendelson » Thu Jul 05, 2018 9:47 am

I'm generally delighted with my current fleet of ThinkPads - a drastically modified (by RBS) X240s which I'll document in a long post before too long, an X270, and a X201s that I leave in a summer place, but they all tend to run hot, despite new fans and Arctic Ice, etc. Is there any recent X-series model that won't run quite as hot as these? If so, I'll be happy to replace the X270 and X201s with something different (though nothing is going to get that X240s out of my hands...).

Thanks for any suggestions.

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Re: X-class ThinkPad that doesn't run hot?

#2 Post by axur-delmeria » Thu Jul 05, 2018 12:01 pm

I don't know what your definition of recent is, so I'm going with "newer than your X201s"

1. X220i with Core i3 would probably run a bit cooler than a regular X220 with Core i5/i7.
2. X220 with ULV CPU like the i5 2537M, esp with regular heatsink installed
3: X230 with ULV CPU like the i7 3667U, esp with regular heatsink installed

Using an over-spec heatsink is a great way to lower CPU temps. The alternative is to undervolt the CPU, which may be possible with the X240s and X270.

Drastic measures like modding the heatsink is a last option. You'd probably consider liquid metal (like Thermal Grizzly Conductonaut) first.
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60F Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

Edward Mendelson
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Re: X-class ThinkPad that doesn't run hot?

#3 Post by Edward Mendelson » Thu Jul 05, 2018 12:32 pm

Thank you for this. I shouldn't have left "recent" as vague as I did. Since this will be a machine I'll want to hold on to for a while, I was thinking along the lines of X250 or later, but of course that's not definitive. I'll certainly look into those X220 models.

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Re: X-class ThinkPad that doesn't run hot?

#4 Post by axur-delmeria » Thu Jul 05, 2018 12:59 pm

Just a question: how hot does the modified X240s get?

As mentioned earlier, hopefully a bit of undervolting could mitigate the issue. Throttlestop is the go-to software for these newer models.
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60F Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

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Re: X-class ThinkPad that doesn't run hot?

#5 Post by Edward Mendelson » Thu Jul 05, 2018 1:11 pm

I'll have to answer that question next month when I get back to where the X240s is. The only ThinkPad I have where I am now is an X201s. (My wife's X250 seems to run fairly temperately, but she doesn't stress it as much as I do with mine.)

I've never tried undervolting, and never tried Throttlestop, but will download it now. Thank you.

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Re: X-class ThinkPad that doesn't run hot?

#6 Post by dr_st » Thu Jul 05, 2018 1:18 pm

The newer models (X240 and later) with low voltage CPUs probably run cooler than X220/X230.
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Re: X-class ThinkPad that doesn't run hot?

#7 Post by RealBlackStuff » Thu Jul 05, 2018 1:23 pm

That X240s has an i7-4600U CPU, so is already Ultralow voltage.
According to Intel, TDP = 15W.
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Re: X-class ThinkPad that doesn't run hot?

#8 Post by Thinkpad4by3 » Thu Jul 05, 2018 1:46 pm

axur-delmeria wrote:
Thu Jul 05, 2018 12:01 pm
I don't know what your definition of recent is, so I'm going with "newer than your X201s"

1. X220i with Core i3 would probably run a bit cooler than a regular X220 with Core i5/i7.
2. X220 with ULV CPU like the i5 2537M, esp with regular heatsink installed
3: X230 with ULV CPU like the i7 3667U, esp with regular heatsink installed

Using an over-spec heatsink is a great way to lower CPU temps. The alternative is to undervolt the CPU, which may be possible with the X240s and X270.

Drastic measures like modding the heatsink is a last option. You'd probably consider liquid metal (like Thermal Grizzly Conductonaut) first.
Where do you get ULV X220/30 without some serious equipment?
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The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

axur-delmeria
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Re: X-class ThinkPad that doesn't run hot?

#9 Post by axur-delmeria » Fri Jul 06, 2018 1:05 am

Thinkpad4by3 wrote:
Thu Jul 05, 2018 1:46 pm
Where do you get ULV X220/30 without some serious equipment?
Now that I think about it more, it's likely that these are CTO options that were rarely ordered, which means they're very very hard to come by.
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60F Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

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