Processor upgrade Zbook 17 G2

[RDK657093]

• I've got a HP ZBook G2 17" laptop that I'm trying to determine the processor(s) that I can upgrade it to.  Currently my ZBook has a i7- 4710MQ 2.5Ghz CPU 47-W. According to the Maintenance & Service file I was able to download, there are 3 other processors that were offered for the ZBook G2 17".  The i7-4810MQ 2.8 Ghz 47-W and the i7-4910MQ 2.9 Ghz 47-W "appear" to be direct replacements without a motherboard change. There is one additional processor, i7-4940MX 3.10 Ghz 57-W. Nowhere in any documentation can I find an answer to my questions,
• Are the 4810MQ & 4910MQ both drop-in replacements since appear to have the same power listed? (47-W)
• Does the 4940MX require a different motherboard because of its power listed? (57-W)
• Can anyone either point me to a document that shows what motherboards are compatible with which processors?                                       I very particular about having documentation when ever I start working with hardware components. I've gotten burned in the past & it has cost me a lot of money so please excuse me being a little OCD on this.  TYIA!

[Paul_Tikkanen]

According to chapter 3 of the service manual, the only motherboard differences are for quad core and dual core processors and no Windows product key, a W8 standard product key and a W8 Pro product key.

The same can be said for the heat sinks.  Two are listed...for quad core and for dual core.

HP ZBook 17 G2 Mobile Workstation Maintenance and Service Guide

According to this side-by-side comparison of the i7- 4710MQ & the i7-4940MX , the processors have the same sockets.

Intel® Product Specification Comparison

This user benchmarking site has reports of over 300 ZBook 17 G2 hardware configurations and some folks have installed the i7-4940MX.

That would be the only info I can provide.

UserBenchmark: HP Zbook 17 G2 Compatible Components

[RDK657093]

Thank you for the detailed response. I guess my only major concern was that the 4940MX  is listed as 57w and my current processor 4710MQ is listed as 47w. I was concerned that may cause trouble with the higher power needs/consumption. Any thoughts or concerns that I should have with that. Also, I've been out of the PC/laptop repair/upgrade loop for several years so most of my "go to places" for parts are no longer in business. Any sites that are particularly good or bad? TYIA  BOB in Omaha

[Paul_Tikkanen]

You're very welcome.

I usually go to eBay for used but tested and working PC parts.

Since HP didn't offer a different heatsink for the 57W processor, I would have to say that all you need to do is to replace the processor and do a very good job cleaning the heat sink and contact surfaces where the heat sink makes contact and reapplying thermal pads/paste as applicable.