Why is my Windows XP x64 faster than my Windows XP?

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hi,
everybody tells me, the only advantage of the 64-Bit version is the memory
management bejond 4GB (or 3.2GB with the PCI-mapping included(?)).
So why are all read or write operations on my hardware-RAID5 behind an
Adaptec 320-SCSI card nearly twice as fast under x64 than under XP Pro SP2?
(Virtual memory is of, everything fits into the RAM)

Grateful for any hints,
macservo
 
macservo said:
Hi,
everybody tells me, the only advantage of the 64-Bit version is the memory
management bejond 4GB (or 3.2GB with the PCI-mapping included(?)).
So why are all read or write operations on my hardware-RAID5 behind an
Adaptec 320-SCSI card nearly twice as fast under x64 than under XP Pro SP2?
(Virtual memory is of, everything fits into the RAM)

Grateful for any hints,
macservo
Click to expand...

Because native 64-bit software for x64 (including the whole OS, plus
drivers) takes advantage of the improvements AMD make to the X86
instruction set, most notably doubling the number of general purpose
CPU registers. This has enormous payoffs.
 
Are you kidding ?
You bought X64 and don't know WHY it's faster ?
Why did you buy it ?
 
Gary said:
Is this the same mother board for both 32 and 64 windows?
Click to expand...

Yes, it's the same entire computer. It has two (identical) disks with XP 32
on one and x64 on the other.
 
- Bobb - said:
Are you kidding ?
You bought X64 and don't know WHY it's faster ?
Why did you buy it ?
Click to expand...

I have not. I am using the free trial version. You con download it from
microsoft and it's working 180 days.
Do you know WHY it's faster?
 
Because native 64-bit software for x64 (including the whole OS, plus
drivers) takes advantage of the improvements AMD make to the X86
instruction set, most notably doubling the number of general purpose
CPU registers. This has enormous payoffs.
Click to expand...

OK, that`s a good one.
But it`s an Pentium-D 940. Does the answer fit for this one as well?
 
Sorry, I thought you bought a system with it and were now asking - why
???

Not a quick answer, but in general, it is based on the Server 2003 code
and translates/compiles 32 bit apps into 64 bits and executes them 64
bits at a time ( so even if nothing else is different - you could say
it's twice as fast). If you DO have a 64 bit CPU, you can also have a
lot more memory so big apps aren't constrained by memory size ...

They have online webcasts that will get into details (rather than me
typing here)

try
http://www.microsoft.com/windowsxp/expertzone/communities/x64.mspx
or
http://support.microsoft.com/kb/896031/en-us
or
http://support.microsoft.com/kb/909753/en-us

and click on view the online webcast or download the transcript. ppt
slides etc.

Bobb
 
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