Conroe and EM64T Problems

[w00t]

interesting i'd say
http://www.xbitlabs.com/articles/cpu/display/core2duo-64bit.html

the fact that AMD64's are Actually better at 64bit than Conroe

"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."

 

[smopoim86]

Originally posted by: w00t
interesting i'd say
http://www.xbitlabs.com/articles/cpu/display/core2duo-64bit.html

the fact that AMD64's are Actually better at 64bit than Conroe

"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."

There will still be 32 bit versions

 

[dexvx]

http://www.xbitlabs.com/articles/cpu/display/core2duo-64bit_7.html

The biggest fluctuation is in Sandra / Sciencemark synthetic tests. Take those out, and they are nearly even.

 

[OSX]

Did you guys read the whole quote? The AMD chip has a better performance gain than the conroe, but it's still slower.

 

[AyashiKaibutsu]

If you actually read the article the Conroe loses in one test by a small margin and every other test it still wins sometimes by very large margins.

 

[Rubycon]

Is either chip a true 64 bit cpu such as the enterprise versions that run ONLY 64 bit code?

 

[xtknight]

Athlon 64 X2 and Core Duo 2 are ia32 with amd64 extensions (not ia64 like Itanium).