very difficult to answer.
would have to test it,it might be accurate results.Unfortunately I can not find a test.

The fact is: Houdini 64 bit is much faster than Houdini 32 bit.

difference in the rybka,depending on the position,can be 67,3% from 32bit to 64bit.

when i went from 32 bit to 64 bit i was using rybka 3 the price was of windows 64 then approx £150

the speed increase was 5% five per cent :(

As i read on houdini home page that on 64 bit platform houdini 64 bit is 30% faster than its 32 bit version I was actually intersted in any test concluded or not of these two version.So when I checked on net I found one test between two on a forum of 201 games between two above mentioned version.
Condition for test :-
System: i7 930 @ 3.6ghz, 6gbram
OS: windows 7 Ultimate X64

Tournament settings:
Blitz 5'' per game
200 games
Round roubin
Rybka 3 GUI

Houdini 1.5a x64
2cores
Ponder On
600mb hash memory
Book: Zeeman 3.5 Final

VS.

Houdini 1.5a w32
2cores
Ponder On
600mb hash memory
Book: Zeeman 3.5 Final

Result


And this is the link where I found this test :-
http://chessgod101.forumotion.net/t376-houdini-15a-x64-vs-houdini-15a-w32-200games

thx zedd,

very good test and good information.
This test is run on 2 cores for each motor.
It clearly shows the superiority of 64bit.

I say / guess : on 4 cores(Quad) for each motor,the result would be much better.
:goodjob2:

I think not a good idea zeeman's book for this test.
There is no engine testbook.
did you put me on a good idea zedd :sm29:
I'll make a test between Houdini 32bit and 64 bit.
Opening book are: Sedat perfect 2011

i will running 80 games with timefaktor 3+0 blitzgames.
Both engines get six cores. :sm27:

result coming soon :sm20:

@zedd1919 wrote:What is the difference between two regarding strength and speed??

When I upgraded from x32 to x64 I noticed a leap in about 1,200kN (for Ivanhoe) and an even bigger leap for Houdini (can't remember the exact figures but it was close to double).

Don't quote me on this (someone feel free to wade in here) but at longer time controls the benefits of increased speed are less obvious.

Testo wrote:I think not a good idea zeeman's book for this test.
There is no engine testbook.
did you put me on a good idea zedd :sm29:
I'll make a test between Houdini 32bit and 64 bit.
Opening book are: Sedat perfect 2011

i will running 80 games with timefaktor 3+0 blitzgames.
Both engines get six cores. :sm27:

result coming soon :sm20:

I must say you are very fast.You are doing excellent job.I also think using complete book to test engine is not a good idea.

Halftime.
40 games over.40 games played with opening book perfect 2011 from sedat canbaz.

next 40 games i will play without opening book.

here the result after 40 games with opening book:


Download Games:
http://www.file-upload.net/download-3594920/Houdini64bit-vs-Houdini-32bit.zip.html

testo!

:goodjob2:

Test is over.

here are the result from 40 Games Houdini64bit vs Houdini 32bit without Opening Book.


Download Games:
http://www.file-upload.net/download-3595868/Houdini64bit-vs-Houdini32bit.zip.html

the speed should be doubled:
32 X 2 = 64
:D

@captainSSS wrote:the speed should be doubled:
32 X 2 = 64
:D

nice if would be true, but it never is...

Testo wrote:Test is over.

here are the result from 40 Games Houdini64bit vs Houdini 32bit without Opening Book.


Download Games:
http://www.file-upload.net/download-3595868/Houdini64bit-vs-Houdini32bit.zip.html

testo!

:goodjob2: Testo