Replies to post #41023 on Advanced Micro Devices Inc (AMD)

[mmoy]

You can run 32 bit apps on a 64 bit OS and get >4GB of memory.


Yes but the performance will greatly depend on the implementation. Software implementations usually perform very
poorly. I remember FX!32 that ran 32-bit apps under ALpha.
Performance was about 10% of native.

I've run 32-bit apps on A64 and I typically see a 15% performance
boost without recompilation.

[CombJelly]

"You can run 32 bit apps on a 64 bit OS and get >4GB of memory.."

For the app? Only if it is using that hack that Intel came up with. And even then, you can't address more than 4 gig. at any one time. Having used things like overlays and memory paging back in the dawn of history(so to speak), it ain't the same thing.