Re: AMD64 VS EM64T
sorry I meant this link http://www.tecchannel.de/hardware/1456/index.html
Its a Linux comparison (but only 32 bit - waiting for the 64 bit update)
> On Fri, Dec 03, 2004 at 11:49:15PM +0900, Nils Valentin wrote:
>> there is a 67 page Benchmark comparison betweeen the Athlon type CPUs
>> and the
>> Pentium 4 types (including Prescott). The review does NOT include the
>> Opterons ;-(, but is has a lot of very detailed benchmark charts. 29
>> for data transfers of each CPU alone + 35 benchmark charts (comparison).
>> The only problem is as far as I know this article is only available in
>> "Test: Athlon 64 FX-55 & 4000+"
>> They have a english website here :
>> ,but unfortunately it does not contain even as near info as the german
>> The article above does not seem to be available in english.
>> The article is free to read online or you can buy the PDF version for
>> Euro (1$).
>> I have it but the copyright does not allow me to forward it to anybody.
>> (Thank you for understanding)
> I think what the original question wanted to know, is the performance of
> opteron/athlon 64 in 64bit mode vs. xeon em64t in 64bit mode. Most
> published benchmarks are for windows and in 32bit mode which doesn't
> tell anything useful unfortunately.
> Certainly comments I have seen on this list so far is that the athlon
> 64 is almost always faster in 64bit mode than 32bit mode, and the
> xeon varies, sometimes gaining a small amount, sometimes loosing a
> small amount, but no major improvement or loss in performance of 64bit
> vs. 32bit. of course programs that have optimized 32bit assembler but
> no optimized 64bit assembler are usually much faster in 32bit mode,
> although that is entirely due to optimized vs unoptimized.
> Len Sorensen
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