i7-4800MQ power draw

[ANagy1]

Hi everyone,

recently I got myself a Thinkpad T440p with an i5 CPU which I switched to a 4800MQ (and got the appropriate 135W charger as well). It works flawlessly, except that when I'm working (lots of rendering stuff) most of the time it just doesn't go turbo, apparently because it exceeds its TDP limit. But on my former notebook, with an i7-3740QM (2.7GHz, essentially the same CPU, just one generation earlier) this never happened. https://drive.google.com/file/d/0B5ZIMvxHGDpiZ3E5Um1SREo4Nkk/view I hope this comparison helps. You can see that the 3740QM eats 49W with turbo on, while the 4800MQ needs 60W in the very same situation (Prime95). What can be the cause behind this?

I just need that extra speed, slower speed means slower work and after weeks and months it adds up to a lot of time.

Windows and drivers are up to date, power management settings done, and all relevant bios settings checked. What could be the reason? Faulty CPU? Faulty motherboard? Faulty charger? Something software-based? Something T440p-specific, related to the specific motherboard/cooling system/whatever?

Thanks in advance for any help.

[idata]

Hello kutor,

Thank you for contacting Intel Communities.I was reviewing the http://www3.lenovo.com/ng/en/laptops/thinkpad/t-series/T440p/p/22TP2TT440P specifications of your laptop and the Intel® Core™ i7-4800MQ Processor is not in the list.In this case, even when the processor seems to be compatible (per socket, thermal design, etc), you have to consider other specifications such as BIOS.I would recommend contacting the system manufacturer to check for any compatibility issues.You can also check the following article for further information (it applies to laptops as well).http://www.intel.com/content/www/us/en/support/processors/000005682.html Intel® Desktop Processor Upgrade InformationI hope this information helps.Best Regards,JC

[ANagy1]

That is a bit confusing, because https://support.lenovo.com/hu/en/solutions/pd100280 this specification (also official by Lenovo) has it on the list. There are also multiple notebooks with a 4800MQ on sale which appear to be original configurations. Now which list should I trust?

[idata]

Hello kutor,

In this case, the best option is to contact the system manufacturer as they have different information for the same product on their own websites.In addition, you can also discuss possible issues that you may face when installing a different processor to your laptop.Best Regards,JC

[idata]

Hello kutor,

On the last interaction, Intel recommended to contact Lenovo. Were you able to contact them for additional information?Allan.