How much 64-bit version faster than 32-bit version?

[xemnas]

I'm using Windows 32-bit. How much Dolphin 64-bit version faster than 32-bit version in the current development build? In the future, will the performance of 32-bit version get improved? For other emulators, it seems that there is virtually no difference in performance between 32-bit and 64-bit version.

[oliverfrancisco]

I don´t really know the speed diference between x86 and x64, but I can tell you that the x64 architecture allows you to use all the hardware having a really good experience that you couldn´t reach with x86 platforms (x86 makes reference to 32-bit architecture); for example, Windows x64 editions can handle larger RAM amounts than Windows x86 platforms (and more RAM basically means more speed). You can even use some features that only a x64 platform can handle.

[haddockd]

If memory serves, with my rig I got an extra 30 or so FPS in the WindWaker test thread. You can check it out here:
https://forums.dolphin-emu.org/Thread-the-legend-of-zelda-the-wind-waker-cpu-benchmark?page=42&highlight=haddockd

Other folks are seeing increased FPS with 64-bit versions. But you need to remember that was with frame limiting off. Real game framerates will only be slightly higher assuming your CPU and GPU can handle themselves.

[ExtremeDude2]

I've seen people say at least 10%

[garrlker]

When I was using a core 2 duo at 2.8 ghz melee(which is a lightweight game) would lag when there were 3 cpus on screen. I upgrade to 64bit windows 7 and that with 3 cpus and many other lightweight games became easily playable. I don't know percentage wise but it makes a sizable difference.

[Shonumi]

delroth mentioned it was around 30% in his tests, if that's worth anything to this discussion. I never wanted to take the chance, so I went 64-bit when I got this computer.

[xemnas]

Thank you everybody for the information. 10%+ is a lot improvement. Another question, does it faster only for CPU bound tasks or for GPU bound tasks as well?

I hope that 32-bit version will catch up with 64-bit version in the future. I don't want to install Windows 64-bit only for Dolphin because I will have to reinstall all the programs.

[admin89]

Quote:I hope that 32-bit version will catch up with 64-bit version in the future.

That's not possible
Like a turtle vs a rabbit .
Once i switch to 64bit version , i will never go back

[ThorhiantheUltimate]

Lol, 32 Bit to catch up? It can't, that's the whole point of 64 Bit, So you can use more ram, etc, etc. 64 Bit is simply better than 32 Bit.

[pauldacheez]

There's a few major optimizations in the 64-bit JIT (mostly the fastmem stuff, IIRC) that the 32-bit JIT doesn't have, but I hear they're possible to port over. 64-bit will likely still be a tiny bit faster if that ever happens, though.

Also, how the fuck is it that OS X did the transition from 32-bit to 64-bit so smoothly and Windows couldn't? There's no separate 32- and 64-bit versions of OS X or of OS X software (woo, universal/fat binaries), and the kernel itself can be either of the two and still run both 32- and 64-bit software as long as the CPU supports it. (And they've already gone ahead and dropped support for 32-bit CPUs in Lion and 32-bit kernels/device drivers/EFIs in Mountain Lion. They probably won't drop 32-bit app support for quite a while/ever, though.) Did Microsoft seriously never figure out how to make their executable format support fat binaries, or autodetect the CPU arch and choose to load a 32/64-bit kernel/base OS based on that? Were they seriously unable to figure out a way to simplify this instead of separating the two really-damn-similar architectures?