Question about X-series with the bundled 65W adapter, gets very hot

Hi all,
My company purchased many X230 notebook in last year.
some are standard configuration (i3 CPU) and some are (i5 CPU).
The i3 seems to have no problem.
However, the i5 model had some issue that it can't full run all the 4-core in high load when connecting the bundled 65W AC adapter, and the adapter got hot. After investigation, we change to 90W AC adapter and the problem is gone. All the 4-core runs correctly and the 90W AC adapter is cool.
The reseller said that the 65W should be factory package and they will not provide any warranty if we use it incorrectly with the 90W adapter (but the lenovo homepage says the adapter supports....).
Now, we are considering the X230i model with the same upgrade to i5 CPU.
Can someone provide feedback if using the X230 / X230i + i5 CPU normally with 65W AC adapter?
Regards,
Donald

Could this be the same or related issue?
I have a T430s with integrated graphics and dual core i5 CPU. According to Lenovo sales literature this system will work with a 65W AC adapter. Also when I ordered the system online from Lenovo's site I was also given the option to select either a 65W or 90W adapter.
At the office I use a 90W adapter. The system idles at under 40°C with the fan usually not spinning or spinning at slowest setting (according to TPFanControl) even when the system is under load. It may get as hot as 50°C when the system is under heavy load. But I've never seen it overheat or had the fan spin continuously at maximum speed, etc.
When travelling I use a 65W adapter in order to minimize size and weight. In that situation the fan is always running and temperatures are usually in the 50°C to 60°C range. On more than one occasion system temperature has "run away" getting increasingly hotter, going to 80°C or 90°C.
In one case the system shut itself down. I let it cool down overnight. When I rebooted I got a fan error. After that incident I sent the T430s to Lenovo for repair. The technicians found nothing wrong. From their report it's not clear if they replaced the fan or not. Nevertheless this "run away" temperature situation has recurred since then.
From reading posts on this thread and based on my experiences with the T430s it seems to me that the 65W adapter doesn't have enough power for even a basic T430s despite what Lenovo's marketing literature may say.
I wonder if the same conclusion doesn't also apply to your systems? Do your temperature issues go away when your system runs on a 90W adapter?
Cheers... Dorian Hausman
X1C2, TPT2, T430s, SL500, X61s, T60p, A21p, 770, 760ED... 5160, 5150... S360/30

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Question about X-series with the bundled 65W adapter, gets very hot

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