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MESSfan
Reged: 10/24/10
Posts: 106
Loc: Paris La Défense
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Re: MAME is very fast since I run it on Win7 x64
11/23/10 03:48 PM


> > If I may ask you, do you think the fact that Windows 7 is handling parallelism
> > (multiple cores) better is a factoring much in the performance. Maybe the answer is
> > somewhere in JohnIV benchmarks but then I missed it.
>
> The speedup is primarily because x64 has twice as many CPU registers as 32-bit and
> compilers can generate substantially better code in that situation. It's not related
> to the properties of any specific operating system since MAME sees a similar speedup
> ratio on all OSes.

Makes you wonder how fast MAME will become when it will truly support parallelism. Right now dual cores have similar if not better performances than quad cores.

The old MAME dogma "we will have 100GHz CPU someday so don't worry about speed" has been contradicted by reality. CPUs seem to have reached their physical limit around 5GHz. Now the only way to get better performance is parallelism. So MAME will need to add real support for it sooner or later.







Entire thread
Subject Posted by Posted on
* MAME is very fast since I run it on Win7 x64 ReadOnly 11/21/10 11:12 PM
. * Re: MAME is very fast since I run it on Win7 x64 tamalmalamarrado  12/01/10 07:13 AM
. * Re: MAME is very fast since I run it on Win7 x64 karadaniano  11/30/10 02:47 PM
. * Re: MAME is very fast since I run it on Win7 x64 redk9258  11/30/10 04:45 PM
. * Re: MAME is very fast since I run it on Win7 x64 R. Belmont  11/22/10 04:27 PM
. * Re: MAME is very fast since I run it on Win7 x64 ReadOnly  11/22/10 10:33 PM
. * Re: MAME is very fast since I run it on Win7 x64 R. Belmont  11/22/10 11:25 PM
. * Re: MAME is very fast since I run it on Win7 x64 ReadOnly  11/23/10 03:48 PM
. * Re: MAME is very fast since I run it on Win7 x64 R. Belmont  11/23/10 05:10 PM
. * Maybe his Internet was WriteOnly *nt* CrapBoardSoftware  11/22/10 07:09 PM
. * Re: Maybe his Internet was WriteOnly *nt* ReadOnly  11/22/10 08:47 PM
. * Re: Maybe his Internet was WriteOnly *nt* CrapBoardSoftware  11/22/10 09:36 PM
. * Re: MAME is very fast since I run it on Win7 x64 John IV  11/22/10 01:37 AM
. * Re: MAME is very fast since I run it on Win7 x64 Naoki  11/22/10 12:28 AM

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