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Beginner
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laptop CPU upgrade

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Hello there everyone, i have an old laptop toshiba satalite C-850-b908 with Core i3 3120m CPU and i wanted to upgrade it so i check a local store for used stuff and i found an Core i7 3621QM, so i figured both are laptop cpu's from the 3rd gen series, but when i read the specs the Core i3 socket is FCPGA988 and the Core i7 socket FCPGA 1224, few people are saying that the the cpu will fit into the mobo but i may have bios issue's but i wanna hear it from here, if you have an info that i could use please reply

thanks,

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Community Manager
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Hello troyzuw,

 

 

Thank you for joining the Intel Community Support.

 

 

I understand that you would like to upgrade your mobile processor. I would like to help you with this.

 

 

Our recommendation is that you can contact your system manufacturer, Toshiba, as it is familiar with the specifications and the processors your computer supports.

 

 

Regarding the BIOS issues other people were mentioning, lack of BIOS support for your processor can cause the system to not boot or exhibit erratic behavior. This is why it is important to work with Toshiba to validate that your computer will support the processor upgrade as planned. It is worth mentioning that even if the processor and motherboard sockets match, your system BIOS may not support the new processor.

 

 

Keep in mind that you may void the warranty as well.

 

 

I hope you find this information helpful.

 

 

Wanner G.

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Community Manager
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Hello troyzuw,

 

 

Thank you for joining the Intel Community Support.

 

 

I understand that you would like to upgrade your mobile processor. I would like to help you with this.

 

 

Our recommendation is that you can contact your system manufacturer, Toshiba, as it is familiar with the specifications and the processors your computer supports.

 

 

Regarding the BIOS issues other people were mentioning, lack of BIOS support for your processor can cause the system to not boot or exhibit erratic behavior. This is why it is important to work with Toshiba to validate that your computer will support the processor upgrade as planned. It is worth mentioning that even if the processor and motherboard sockets match, your system BIOS may not support the new processor.

 

 

Keep in mind that you may void the warranty as well.

 

 

I hope you find this information helpful.

 

 

Wanner G.

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New Contributor III
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your motherboard processor are not fit for i7 , eventhough I its same 3rd generation , because different socket having pins ,

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Super User
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Two things, Raju -

First, I believe the Op (troyzuw) has the model number incorrect and it should be i7-3612QM.

Second, if so, you are incorrect as they MAY BE socket compatible:

https://ark.intel.com/compare/64901,67356,71465 Intel® Product Specification Comparison .

However, the Op has been given bad information regarding socket 1224 - it is BGA and not PGA. The i7-3612qm can be PGA988 or BGA1224. If PGA988 is the socket in his laptop, good, he may be in luck. And, if his existing processor is socket BGA1023, none if this matters and he can stop now as his processor is soldered to the motherboard. Look at "Package Specifications, package size" in the above link.

Now, all of that said, Wanner G is correct. To upgrade a processor, it must be SOCKET, CHIPSET, and BIOS compatible. To determine if the upgrade processor is BIOS compatible, the op MUST contact TOSHIBA and ask them which processors are compatible with THEIR BIOS.

Specifically, read paragraph 2 from the link below:

https://www.intel.com/content/www/us/en/support/articles/000005682/processors.html Intel® Desktop Processor Upgrade Information

Doc

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