Adobe Photoshop CS4 Will Be 64-Bit For Windows Only

HighWizard notes that Adobe Systems has shared the first scrap of information about its next version of Photoshop, CS4, and it's a doozy: there will be a 64-bit version of the photo-editing software, but only for Windows Vista and not for Mac OS X. Ars explains the history of how this conundrum came to pass — blame Apple and/or Adobe as you will.

Comments

Re:64 bit is no panacea

[joaommp]

Well, it will run faster if you have a large pool of physical memory and do some heavy Photoshop editing, because Photoshop will be able to access more than 3GB of memory (remember that 1GB of the 4GB address space is already reserved for system code sharing) and not resort to it's own swap/disk cache system as much.

But AMD64 could be...

[mrchaotica]

Remember, going to 64-bit on x86 can make programs faster, but not because of the extra bits. The speedup comes from the fact that, in addition to increasing the bits, AMD also added a bunch of extra registers to the spec.

Re:I vote Apple

[jcupitt65]

You're thinking of Tiger, I think. Leopard is fully 64-bit. http://www.apple.com/macosx/technology/64bit.html

Re:The blame falls solely on Apple

[Teese]

Apple have never promised 64-bit Carbon. They did promise 64bit carbon, during the 2006 WWDC. It wasn't until the 2007 WWDC that they rescinded the promise. Before the 2007 WWDC, they backed up the promise with seeds with 64bit carbon support in. They removed that 64bit carbon support in the 2007 WWDC seed. Of course they also slightly redefined what carbon meant. It now means the GUI portions of what used to be called carbon. So there are parts of "carbon" that are 64bit. They just aren't called carbon anymore.