Intel core 2 duo T5800 vs T6400 Notebook processors comparision 7

Notebook Intel Core 2 Duo processors comparision T6400 vs T5800

Notebook processors T6400 vs T5800


T6400 – 2 GHz 2MB L2 Cache , 800MHz FSB, 45nm (lower better), 35watts, Penryn Family of processors.

T5800 – 2 GHz 2MB L2 Cache , 800MHz FSB, 65nm(lower better) , 35watts, Merom Family of processors

And both the models support native 64 bit computing


T5800 was the popular model of Intel’s midrange laptops but it has got a upgrade with a new T6400 after the 2008 Christmas season. Almost all the major laptop brands have started sidelining their T5800 models in favour of T6400 with almost the same spec.

Many have asked me what is the difference between T5800 and T6400. Typically should be no major difference between the two, but if you have the choice and the price difference is less than or around 50$ always go for the newer model(T6400), the newer models have better architecture better support and your laptop might get a better resale value if you decide to sell.

The only difference in terms of specs is T6400 follows 45nm technology and belongs to the penryn family, whereas the T5800 follows the 65nm architecture.

( values of a very small sample of T6400 show a markedly high improvement over the T5800, im not sure if this is because of the overall higher configuration associated with current T6400 based laptops or maybe inaccurate measurement at cpu . I haven’t included the values as it could be misleading.

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7 thoughts on “Intel core 2 duo T5800 vs T6400 Notebook processors comparision

  • hp_DV4

    hi my brother has a HP pavilion dv4 laptop and its got the t5800 in it with 4 gig ram,and i have a HP Pavilion dv4 with a t6400 with 3 gig ram. Bouth run on same Windows Vista. His laptop is a bit faster in games, and mines sometimes starts to lagg a bit. But my laptop usess about 30% less power on the bettery, alot better. while bouth run on high performance bettery plan.

  • Dan Sanduleac

    As far as I can see from Intel’s page, T6400’s VCore range is wider (1000 mV – 1250 mV) than T5800’s, so, even though it may be a tad cooler on idle, on usage it will heat up more than T5800 (its max temperature is 105C compared to T5800’s, which is only 90C). Even though they both have a TDP of 35W.
    So apart from the fact that the T6400, being newer, will have a better resale value, and disregarding the potentially misleading benchmark you mentioned, why would one pick T6400 in favor of T5800?