AMD vs Intel in 64 bit.

[Pants]

Hi,

I have been searching but I can't find reviews and comparisons in either XP or Vista (64 bit versions).

This is important to me considering my next OS choice!

Is the Conroe still ahead in 64 bit or does the AMD reel it back in?

Cheers.

 

[Pants]

Quotes from sombody called "Hightest"

Articles that bench 64bit performance on the two processors do provide the following conclusions.

1. AMD 64 processors garner about a 15-20% performance boost on average when moving to 64bit code versus 32bit code.

2. Conroe or Core 2 Duo garners 5-7% performance boost, showing a less efficient 64bit design.

3. However the sheer raw performance of the Core 2 Duo still has it outperforming at least by 33% in 64bit versus 54% in 32bit, so the peformance gain of the AMD is currently irrelevant as it's still slower.

There is no link the the alleged articles unfortunately.

True.. False?

 

[Pants]

False. Conroe is faster already so of course it's going to gain less of an increase.

How does this speed of conroe affect the % increase from 32 bit the 64 bit code?

Cheers.

 

[Pants]

http://www.xbitlabs.com/articles/cpu/display/core2duo-64bit_4.html

read that.

EDIT: and this: http://www.planetx64.com/index.php?option=com_content&task=view&id=283&Itemid=14

Cheers, I have been looking for something like that xbitlabs article for ages!

Conclusion: (for those too lazy etc)

"At the same time I would like to point out that it looks like Athlon 64 processors ensure higher performance increase when switching to 64-bit work mode. The average performance improvement we have seen from Athlon 64 FX-62 equaled 16%, while Core 2 Extreme X6800 demonstrated only 10% average performance boost. This way, there is a certain difference: AMD K8 turns out 6% mode efficient in 64-bit mode than Intel Core. However, this difference cannot compensate for the 20% performance advantage of the Intel Core 2 Duo over the Athlon 64 X2 working at the same clock speed, which we have pointed out in our previous articles. Therefore, we will not change our conclusions about the performance of the new Intel processors even keeping in mind the upcoming launch of 64-bit Windows Vista OS family."