32bit or 64bit?

[hiberphoptik]

I am thinking about getting a new motherboard, CPU, and video cards here is my current setup:

asus AMD MB with nforce chipset
AMD CPU @ 2.2 Ghz
1GB RAM
Nvidia 6600
Nvidia 5500
Nvidia 5500

Here is what I want to get:
64-bit AMD 4000+ CPU @ 2.4Ghz
A8N-SLI Delux Socket 939 AMD MB
2GB RAM
Nvidia 7800 GT OC (to replace the primary 6600 card)

honestly I only want to upgrade for better 3d performance but heck why not go all out eh?

My questions .... I do not want to reinstall FC4 I want to just swap the components out, however I am worried that the 32-bit FC4 install will not work or will have issues running on the 64-bit arch.

Who can lay my worries to rest?

Will it run in 32-bit mode?

I just wont get the added benifits of 64-bit binaries on 64-bit hardware?

Or will I be all screwed up and have to reinstall with 64-bit FC4?

If I will have no issues running my 32-bit install I can upgrade slowly to 64-bit, but if my curent install on the hard drive will not work when it boots up and sees the new CPU then should I:

A. just upgrade the video card the rest of the hardware is still good

or

B. dont upgrade anything just save my money

:)

[jeffk42]

There's no problem running 32-bit Fedora on a 64-bit system. As you said, it won't be optimal, but it can be done, and it's generally easier that way. I run the 64-bit version and its great, but not without its problems. :)

[hiberphoptik]

There's no problem running 32-bit Fedora on a 64-bit system. As you said, it won't be optimal, but it can be done, and it's generally easier that way. I run the 64-bit version and its great, but not without its problems. :)

awsome! thanks for your input, I didnt want to spend a couple grand and get home to find out i had hours worth of re-setup and re-config ahead of me :) It also seems like 64-bit is still struggling a bit with a few things that we take for granted in 32-bit hopefully by the time FC5 comes out this wont be so much of an issue

[imdeemvp]

AMD 64bit is great cpu and system but under linux in general some apps dont run properly....I have a laptop with amd turion 64 and I prefer to use the 32bit fedora version.