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CPU upgrade on my laptop

post #1 of 5
Thread Starter 
I'm about to replace a deffect Heatsink on my Toshiba Satellite A660-042 laptop and I'd like to take this opportunity to upgrade my i7 740QM CPU since my motherboard has a removable cpu socket that allow to replace the cpu (not soldered in).

Can anyone help me figure out which of those CPU could be compatible for an upgrade on my Mobo?

There are 3 motherboards, compatible with my current Intel i7-740QM processor:
Intel (chipsets) HM55 Express <---- mine
Intel (chipsets) PM55 Express
Intel (chipsets) QM57 Express

Core i7-740QM <--- my currrent
Core i7-820QM <-- can i upgrade to?
Core i7-840QM <-- can i upgrade to?
Core i7-920XM <-- can i upgrade to?
Core i7-940XM <-- can i upgrade to?

Here's a side by side comparison chart of the above CPUs:
http://ark.intel.com/compare/43127,43126,43125,43124,49024 <-- You can see the few differences by the Yellow colored rows ... As you can see, they are all pretty much similar. Is that enough to pretend they are all actually compatible with my laptop?

Also, how should I know if my current BIOS (which is already up to date) support those CPU ?
I've checked the official Toshiba laptop manual's, but there's nothing related to CPUs upgrade in there (no surprise)
Edited by marccoc - 6/25/13 at 6:04pm
post #2 of 5
AFAIK

The only issue is rather your bios has the ability to run them... I think it is called micro codes or something like that... the bios can often be modified to include those codes... although I have only done this with AMD boards from DELL, HP and Gateway.

I have no clue if this is possible on Intel boards.

Maybe look at what CPU-z reports as your motherboard and see what it reports as the motherboard for the same laptop with a i7 extreme.

From my understanding they all use a 988 pin / 989 pin socket... I think it is 988 but I am not sure.

Oh also they are all within a decent amount of TDP that it shouldn't matter especially if you use a better TIM than what came with it... but again I could be wrong... My 740QM gets hot enough to melt the damn laptop.

I will keep watch of this because if a 940XM is cheap and you are successful I might do that same thing.
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post #3 of 5
Quote:
Originally Posted by marccoc View Post

I'm about to replace a deffect Heatsink on my Toshiba Satellite A660-042 laptop and I'd like to take this opportunity to upgrade my i7 740QM CPU since my motherboard has a removable cpu socket that allow to replace the cpu (not soldered in).

Can anyone help me figure out which of those CPU could be compatible for an upgrade on my Mobo?

There are 3 motherboards, compatible with my current Intel i7-740QM processor:
Intel (chipsets) HM55 Express <---- mine
Intel (chipsets) PM55 Express
Intel (chipsets) QM57 Express

Core i7-740QM <--- my currrent
Core i7-820QM <-- can i upgrade to?
Core i7-840QM <-- can i upgrade to?
Core i7-920XM <-- can i upgrade to?
Core i7-940XM <-- can i upgrade to?

Here's a side by side comparison chart of the above CPUs:
http://ark.intel.com/compare/43127,43126,43125,43124,49024 <-- You can see the few differences by the Yellow colored rows ... As you can see, they are all pretty much similar. Is that enough to pretend they are all actually compatible with my laptop?

Also, how should I know if my current BIOS (which is already up to date) support those CPU ?
I've checked the official Toshiba laptop manual's, but there's nothing related to CPUs upgrade in there (no surprise)

If you can decompile the bios you might be able to see what CPU's it supports. Most likely the best you'll be able to upgrade if at all is the 840QM. The 920 and 940XM probably draw too much power.
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post #4 of 5
Thread Starter 
Quote:
Originally Posted by Shiftstealth View Post

If you can decompile the bios you might be able to see what CPU's it supports. Most likely the best you'll be able to upgrade if at all is the 840QM. The 920 and 940XM probably draw too much power.

Yea my bios (Pheonix EFI 2.30) actually has very limited option.. But I found this site : http://www.bios-mods.com/downloads/
They have many tools there that might provide Bios Edition...
(especially those 2):
Phoenix Bios Editor v2.2.13 - Dec 04 2012 10:13:05 AM
Phoenix WinPhlash v1.7.16.0 - Dec 04 2012 10:13:06 AM

Not sure if I'm ready to mess with Bios however.. I will have to learn how to back my bios properly first prior to attemps anything.. You knew that site ?
post #5 of 5
Usually you don't have to be the one moding the bios... Either someone has already done it or you request the mod and someone does it for you. So it is the same process as updating the BIOS. If you request the bios to be modified ask if they can include any updates for storage controllers etc.

I have done this multiple times to get AM2-AM3 HP and Gateway boards running newer CPUs... Sometimes they are so limited that simply upgrading to just a faster processer of the same exact type is not possible without modification.

You can often time get updated firmware for storage controllers, lan, usb, etc from modified BIOS files as well...

As far as the TDP...

I would be more worried about the heat than the actual power consumption however I have never done exactly what you are doing... so try to find someone who has... it is very cool to be a pioneer but it comes at a great cost... Following in others footsteps is much safer smile.gif

So I would recommend that you use the best TIM you can get ahold of and I would probably even recommend lapping both the CPU and the heat sink. Who knows how bad those sinks are...

How much would one of those extreme processors cost? Because I have a DV7 and this is starting to interest me.
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RAMHard DriveCoolingCooling
ballistix ddr4 dual channel Samsung 850 EVO 500GB DT 5noz CPU Waterblock XSPC Razor Full Cover GPU Block 
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Kingwin PF-850 Ttesports Level10M Razer Vespula Sennheiser HD590 
CPUMotherboardGraphicsRAM
Intel i5-2500k gigabyte z68xp-ud4 Gigabyte GTX 970 G1 Gaming DDR3 1600 4x2GB 
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