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CPU Swapping on laptops

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February 25, 2010 6:33:57 PM

Hello,

I have an old laptop (Sony Vaio CR190E) with:
T7500 C2D (Merom, 65nm, 2.2GHz, 4 MB-L2, 800 MT/s, 11x, 1.0375-1.3V, 35 W, Socket P/478).

Can I plug that in in a new laptop (Lenovo IdeaPad Y450) with:
T4300 (Penryn-3M, 45nm, 2.1GHz, 1 MB-L2, 800 MT/s, 10.5x, 1.0-1.25V, 35 W, Socket P/478)

I want to do so because I think the T7500 is a faster processor.
Some pros/cons to doing it will be much appreciated !!

More about : cpu swapping laptops

a c 133 à CPUs
February 25, 2010 6:48:55 PM

First off swapping processors on a laptop 90% of the time do not work usually the processor that you have is the only one that will work. Secondly the swap you want to do is not worth time you will see little to no increase in performance. The 45 nm is slightly faster but not enough to actually swap those processors you will not notice the difference between the two in real life use. The 45 nm would be faster only in synthetic benchmarks. The only benifit in the 45nm processor is that it would run a little cooler and use slightly less power but thats the only real difference between them. IMO just stick with what you got you will be very disappointed because you will not notice a difference.
a c 133 à CPUs
February 25, 2010 6:57:10 PM

O geez i just noticed you want to put the 65 nm in the new laptop lol that will defitnly not work. even with the 4300 haveing less cach should still be the same performance in everyday apps you will notice no difference.
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February 25, 2010 7:20:56 PM

saaiello said:
O geez i just noticed you want to put the 65 nm in the new laptop lol that will defitnly not work. even with the 4300 haveing less cach should still be the same performance in everyday apps you will notice no difference.


I understand that the fabrication difference is a huge one, but as a query I was wondering why they do not work ? after all the voltage ranges and the socket types match ... The reason why I want to do it is I have seen very discrenable difference in speed when I do run Photoshop + MatLab say ... on my old computer (3Gb) and someone else's computer (4Gb) with the 4300 or the 6600 processors.
a c 133 à CPUs
February 25, 2010 7:27:49 PM

3gb and 4gb are you talking about the ram. You will see a difference in Photoshop performance with more ram and that has nothing to do with your processor. Now if it is the ram you are talking about if you a re running a 32bit operating system the max memory it can use is 3.5 gb a 64 bit will be able to use more ram hence making it faster this also has nothing to do with the processor. You will see a difference between 32bit and 64bit OS.
March 6, 2010 11:13:03 PM

I was saying, that 3Gb+T7500 was outperforming 4Gb+T6600, probably due to larger L2 Cache on the T7500. Any how, replacing the CPUs may prove to be a hard nut ... with unpredictable results. However, the question as to why 45nm/Penryn/Socket478 is not compatible with 65nm/Merom/Socket478 still begs an answer. What is the actual difference other than fabrication and die changes that makes them incompatible ? May be looking at Intel white-papers would be necessary to get an answer.

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a c 133 à CPUs
March 6, 2010 11:19:55 PM
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Still not sure on if it will work its something you might just have to give it a shot the worst that could happen is it wont post and you just put the orig processor back in. Now the 65nm processor therotically should work in the 45 nm laptop but the 45 nm will prob not work in the 65 nm laptop. The bios has to have the id loaded for each processor the problem is laptops tend to only load the processor it comes with id if they would update the bios with the id code for more processors it would work without it it has no clue what is in the socket and simply wont post.
a b à CPUs
March 6, 2010 11:21:58 PM

have a look at the higher range laptops using your board any of their chips should work
March 6, 2010 11:57:32 PM

Best answer selected by cniru.
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