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Dell Latitude E5420 CPU Upgrade
Hi,I currently have a Dell Latitude E5420 Laptop with an i5-2520M Processor installed running the latest BIOS A14.
I would like to upgrade the CPU and in the owners manual it say's supports i3/i5 and i7 CPU'S but I can't find anywhere that lists the CPU's I can upgrade to that will work with the BIOS.
How can I find out which is the best CPU that is compatible with it?
ejn63
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August 9th, 2017 19:00
Only second-generation Core CPUs with a TDP of 35W or less will work.
The i7-2640M is the fastest of these. Make sure your system has a 90W adapter (integrated video) or 130W adapter (discrete video).
ejn63
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August 10th, 2017 11:00
Integrated = Intel video
Discrete means AMD/ATI or nVidia. Check the display adapter entry (or entries) in your Device Manager.
ejn63
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August 10th, 2017 12:00
Yes -- subject to the added weight and physical dimensions (the battery will extend beyond the back of the system, unlike the 6-cell that fits entirely inside.
ejn63
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August 10th, 2017 15:00
90W is fine for integrated video -130W will charge the battery faster while the system is operating, but that's about it.
ejn63
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August 9th, 2017 19:00
Only second-generation Core CPUs with a TDP of 35W or less will work.
The i7-2540M is the fastest of these. Make sure your system has a 90W adapter (integrated video) or 130W adapter (discrete video).
Allycuk
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August 9th, 2017 23:00
Hi,Can you explain further please when you say: Make sure your system has a 90W adapter (integrated video) or 130W adapter (discrete video).
I currently have a 65w adaptor/battery charger.
Do you know where I can find a list of compatible 2nd gen 35w processors for this specific laptop and if thats not possible could you tell me if the i5-3230m or i5-3320m are compatible?
cheers!
ejn63
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August 10th, 2017 04:00
Those two are third-generation (the first digit indicates the generation) and won't work.
You'll be better off with a 90W adapter for the faster CPU.
Allycuk
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August 10th, 2017 10:00
I'll go with the i7-2640m then.
Can you tell me what you mean when you say integrated video and discrete video and how do I find out what I have?
Allycuk
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August 10th, 2017 12:00
Thanks,I have integrated intel HD3000.
Can you also tell me if I can put a 9 cell battery in instead of a 6 cell which is what I currently have?
I will buy a 90watt adapter when I go to upgrade.
thanks for all the help.
Allycuk
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August 10th, 2017 15:00
Thank you ,
last question : can I get a 130 watt adapter for quicker charging or should I only go for a 90 watt?
eg can they both be used with any latuitude e5420 battery?
Allycuk
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August 10th, 2017 17:00
Thanks for all your help.
Much appreciated!