I have just purchased a ThinkPad T440p i5-4300M and it is going to be delivered on Monday. I have also ordered an i7-4712MQ to replace the CPU. However, I have heard that it may be necessary to replace the charger if I swap the CPUs because it requires more power? Although they do both have 37W TDP. I asked the seller to send me a picture of the current adapter and they sent me this. I looked up ADLX45NCC3A and 45W chargers come up, which seems quite low. I've heard that the chargers go up to 135W. Is that true? As far as I know the laptop has no discrete GPU.
So, do I need a new charger and if so, which one should I buy?
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You could get one with the 'regular' round-barrel plug and get a round-to-square plug adapter like this: https://www.ebay.com/itm/223385374715
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