HP/Compaq :: HP Envy 15 CPU "downgrade"

Mar 30, 2010

my questions can be summarized as follows:

(1) Would it theoretically be possible to put a PGA 988 version of i7-640LM into an Envy 15, and

(2) Is it easy to upgrade the HDD's for a couple standard 2.5" SSD's?)

From I understand, most people's complaints and bad reviews about the Envy 15's battery life and heat are about the older version with the HD4830, and the new version is a bit improved. That said, I can't say that I approve of a 1++ lb extra battery pack for a laptop to really be mobile, and I bet it still does get noticeably warm... Right?

So, I started thinking - the main benefits of this laptop for me would be the graphics card and USB 3.0... Maybe I can sacrifice some other factors to increase battery life and decrease heat.

I took a look at a list of i7 mobile CPU's and found the i7-640LM... And while this model is mainly available in BGA form, I correctly figured that Chinese eBay sellers might have an ES version in PGA 988. That's a 25W TDP, low voltage, dual-core CPU that would surely eat up a lot less power than a quad-core, 45W i7. I'm not sure if that CPU's memory controller would allow using four memory sticks, but I don't mind 2x4Gb... It's just another way of lowering the power usage, heat, and weight. So, question number 1: Would such a "downgrade" theoretically work? Would anything with hardware and/or BIOS prevent me from doing this? Considering that I'd want USB3, I guess I'd have to buy an i7 model from which to do the downgrade.

And secondly, are the HDD slots just standard 2.5" trays (and ~9mm thick or even thicker) and easily upgradeable? I haven't done the research, but I figured I might get a couple of SSD's that are especially low power... Though I bet just about any SSD's would be a better than HDD's.

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