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Would 64-bit make any difference to Apps like Photoshop?
The more high-end professional stuff. Not like Word, but the creative ones. (The whole Adobe collection I suppose. :p)

I'm pretty sure that the PS3 is 64-bit. Just thought to add that in. ;)

If you had a lot of RAM then 64bit would allow an app to address more RAM then a 32bit operating system.

By a lot of RAM I mean maxing out a mac pro, but I am not even sure if Adobe have updated photoshop yet?
 
What I'm saying is, for a Macbook (Can't boot into the 64-bit kernel, and limited to 4GB RAM), would a photoshop that was in 64-bit (Could be CS5) be much better? I'm planning to get more RAM as 2GB isn't cutting it. But if Photoshop can be faster if it was in 64-bit then its a bit annoying. I'd swear windows has a 64-bit version.
 
I'm no expert on these matters, but I have often wondered what the difficulty in re-compiling for 64 bit is ?

I know that when I was using the Linux system, you could literally download the source for any opensource application and recompile with GCC into a 64 bit binary.

Does recompiling like this just create a binary, but not necessarily a 64 bit optimised one or is there some other difficulty involved ?

For a commercial application, things are rarely as simple as just recompiling and releasing at. At a bare minimum you need to test the entire application to make sure there are no unexpected bugs (for example, you might inadvertently be relying on bugging behavior in a 32 bit library that is fixed in the 64 bit library, or have a race condition that doesn't typically happen in 32 bits but does happen in 64 bits. There are numerous examples of software that doesn't run in snow leopard in 32 bit mode. There will be even more that have 64 bit mode issues if they simply recompile.

Additionaly, some developers may be in the middle of developing the next version of their software, or integrating Snow Leopard technologies. Most of them would rather wait and release 64 bit support with the next version than going back and recompiling an older version for 64 bit support.

I would expect than in the next couple of months a large number of 3rd party programs will offer 64 bit versions. The longest hold outs will be programs that require drivers and kernel extensions and 2nd party developers, where you will probably have to wait for the next major version (i.e. Parallels 5.0, Adobe CS5) to see 64 bit support.
 
What's up with all the trolls lately?

By the way, I have some third party apps that are 64 bit

Flip4Mac Preference Pane
Colloquy

Also, all of the Developer Tools are 64 bit.

So yeah, I have a lot of 64 bit apps on my machine.
 
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