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• What are the differences between 32-bit and 64-bit, and which should I choose? 17 answers

My Dell Optiplex 780 is blanccoed, how do I know whether I need a 32 or 64 bit ubuntu?

marked as duplicate by David Foerster, Eric Carvalho, user.dz, Mahesh, Pilot6Jun 14 '16 at 6:28

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4 Answers

What your CPU supports

Your CPU is 64-bit, as are virtually all desktop CPUs made in the last 11 years.

• The first AMD CPUs to support 64-bit were the Opteron and the Athlon 64 in 2003.

• The first Intel CPUs to support the current 64-bit instructions were the Pentium 4F and the Pentium D in 2005, and the first Intel Core CPU to support it was the Core 2 in 2006.

Most desktop and notebook CPUs made since this have supported 64-bit, with some exceptions in the early days.

You can still install a 32-bit operating system and 32-bit software on a 64-bit processor, but it comes with limitations: you won't be able to utilise 4GB or more of RAM (with some exceptions), a single process won't be able to use more than 2GB (usually) of RAM, and you won't be able to utilise many of the new instructions in AMD64/Intel 64 which can potentially speed up programs.

Is there any reason to install a 32-bit OS?

There have historically been some drawbacks to using 64-bit, but these are all but irrelevant now:

• Software compiled for 64-bit is usually a little larger due to using 64-bit pointers instead of 32-bit, but that is offset by the ability to use large amounts of RAM - 8GB is cheap and plenty these days and of course can only be fully utilised by 64-bit software.

• 64-bit operating systems require driver code to be 64-bit. At one point in time, manufacturer support for 64-bit drivers was poorer than 32-bit, but this situation is probably the reverse now.

thomasrutterthomasrutter

Here's some information about arhitectures that you might find useful. There's a link provided at the bottom that leads to a full article.

If you are doing heavy work where you have started to hit the 4GB memory barrier, then 64-bit is for you. Certain intensive tasks such as encoding video or audio also run significantly faster on 64-bit operating systems (NOTE: this is implementation specific).

Phoronix has done some testing (2009), comparing 32bit/PAE/64bit, and this seems to indicate that 64bit performs better than 32bit in almost all cases.

Early 64-bit adopters were plagued by incompatibility problems (most noticeably Java and Flash), however most issues have now been resolved.

Some applications such as Flash do run slower in 64-bit mode, however work continues to improve on this.

Other platforms which also come in 32 and 64-bit flavours may experience more problems especially due to a lack of 64-bit device drivers as incompatible user application. As Ubuntu is entirely open source, this is not the case as all hardware supported by Ubuntu works equally well in 32-bit and 64-bit environments. The same applies to open source user applications as well.

Unless you have specific reasons to choose 32-bit, we recommend 64-bit to utilise the full capacity of your hardware.

JoKeRJoKeR

A quick search online would've showed you that it's a 64 system.

animaletdesequiaanimaletdesequia

The Decision

It depends on you and the central processing unit.

How do you know if you have a 64 bit architecture?

Search online for the make / model / brand of your PC and find the processor specs. If nothing is telling you '64-bit' do an online search for the processor name.

If you have a 64 bit processor, get the 64-bit version

Here is why:

The 64-bit version is easier to obtain. (Convenient)

It is likely a 32-bit application is 64-bit compatible. (Practical)

Applications like Google Chrome are not 32 bit compatible (Usable)

If you've got a 32-bit processor, get the 32 bit version

You don't have a choice. You might want to start thinking about getting an upgrade.

Not the answer you're looking for? Browse other questions tagged 64-bit32-bit or ask your own question.

Did you try installing the Wifi driver from the Dell site? Try Windows 10, 8.1, 8 or 7, in that order, or if necessary in Compatibility Mode.

Just because Wifi driver wasn't installed during Upgrade doesn't mean there isn't one. I've never not been able to find a driver. How to: Install and Update drivers in Windows 10 - Microsoft Community

Optiplex 780 Drivers

What is always best during OS install is to plug in by ethernet cable to maximize chances it will start up connected or a driver can be found possibly easier. Put the latest LAN drivers in your backup from the PC or Device's Support Downloads webpage so you can get online quickly if it doesn't start up ready to connect.

Then type Update in Start Search box, Check for Updates, install all Updates including Recommended, expediting the reboot when requested. Then check again until no more are offered.

Now right click Start button to open Device Manager, import any drivers still missing or in error from the Support Downloads webpage for your PC or the device model. If no Windows 10 drivers, install 8.1, 8 or 7 in that order. Some may need to be installed in Compatibility Mode.