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It seems increasingly popular for laptop manufacturers to preinstall the 64 bit version of Windows 7 on laptops. Whilst there are well understood benefits of 64 bit OS over 32 bit, how much of that is realisable on a laptop? What is the real advantage of 64 bit OS when the hardware otherwise limits performance by the capabilities of the RAM slots and hard disk data rates?
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Possible duplicates or related material: http://superuser.com/questions/4526/should-i-install-64-bit-versions-of-operating-systems - http://superuser.com/questions/10370/what-is-the-difference-between-64-bit-and-32-bit-operating-systems - http://superuser.com/questions/56540/32-bit-vs-64-bit-systems - http://superuser.com/questions/9112/other-benefits-of-64-bit-os-apart-from-memory-expansion
– slhck – 2011-05-04T11:57:25.863Thanks for those links, I've read them but I don't consider them duplicates because they mainly consider the advantages of more RAM and bigger address spaces per process, both of which seem moot on a laptop. – Martin – 2011-05-04T12:02:11.453
2@Martin Basically everything that applies to desktops applies to laptops too. For example,the most famous point: address space. My 4 year old laptop has 4 GiB of RAM. Today laptops come standard with 4 GiB memories and can be easily upgraded to 8 GiB. That's a big plus factor for 64bit systems. – AndrejaKo – 2011-05-04T12:04:47.263
2It's a compatibility issue. A lawnmower really doesn't need high octane fuel but it would be a pain for gas stations to carry a lower grade product just for them. It doesn't matter if your laptop doesn't need 64 bit so long as it can run software targeted at better systems. – Blomkvist – 2011-05-04T12:05:39.687
1I know, I just put it there to let others decide :) But is there really such a difference between laptops and desktops? I mean, you can buy a desktop with an i3 and 2GB RAM and a laptop with an i7 and 8GB RAM. – slhck – 2011-05-04T12:06:17.450
@slhck Ok, we are part way there if 8GB RAM in laptops is getting common. Then I can see that they could be used for heavy computing tasks. But I thought I saw lower cost "consumer grade" laptops with 64 bit, that don't come with 4 GB RAM althought they might support it in the limit. – Martin – 2011-05-04T12:12:10.647