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theman5725

macrumors 6502
Original poster
Aug 2, 2006
388
0
I heard that xp home only supports one processor core or something like that so a dual-core macbook wouldnt get full speed on it. Is this true?
 

mrichmon

macrumors 6502a
Jun 17, 2003
873
3
Phil9579 said:
I heard that xp home only supports one processor core or something like that so a dual-core macbook wouldnt get full speed on it. Is this true?

XP Home has no official support for hyper-threading, dual core CPUs or multiple CPUs.

For the Core Duo CPU, XP Home will see and use both cores if you have SP2 installed. A google searches "XP Home dual CPU" and "XP Home core duo" turn up numerous relevant pages.
 

balamw

Moderator emeritus
Aug 16, 2005
19,365
979
New England
mrichmon said:
XP Home has no official support for hyper-threading, dual core CPUs or multiple CPUs.
I call BS. XP SP2 supports one physical processor, including those with virtual or physical second cores.

http://support.microsoft.com/default.aspx?scid=kb;en-us;810231

Both Windows XP Home Edition and Windows XP Professional treat a Hyper-Threading enabled computer as a multiple processor computer.

...

Note: Windows XP Home can use a maximum of one (1) physical processor. However, because Hyper-Threading is supported, the operating system takes advantage of the second (virtual) processor.

EDIT: http://www.microsoft.com/licensing/highlights/multicore.mspx

Dual-core processors will be introduced into the market by Advanced Micro Devices (AMD) and Intel Corp. in 2005, with expectations that this technology will become mainstream in 2006. A processor containing multiple cores, leveraging its ability to execute multiple tasks, will offer a higher level of computing power and functionality than the current generation single-core processor. As this new technology comes to market, software companies are examining how software licensing policies will adapt.

.....

Frequently Asked Questions

Q. What is a "processor"?

A. A physical processor is a single chip that houses a collection of one or more cores. A core is a collection of one or more processor threads and a set of shared execution resources. A processor thread is the architectural state within a processor that tracks execution of a software program thread/task.

.....

Q. How does this licensing policy affect products such as Microsoft Windows XP Professional?

A. Microsoft Windows XP Professional and Microsoft Windows XP Home are not affected by this policy as they are licensed per installation and not per processor. Windows XP Professional can support up to two processors regardless of the number of cores on the processor. Microsoft Windows XP Home supports one processor.
B
 

deepy

macrumors regular
Jun 28, 2006
160
0
A couple of days ago i posted a how-to get win2k working with bootcamp on macbook question.

Anyway this thread just made me realise why i never posted it before.....because of dual core. whoooooops lol
 

balamw

Moderator emeritus
Aug 16, 2005
19,365
979
New England
deepy said:
A couple of days ago i posted a how-to get win2k working with bootcamp on macbook question.

Anyway this thread just made me realise why i never posted it before.....because of dual core. whoooooops lol
:confused: 2K has always supported multi-processors. (It's a Pro OS).

I would presume that installing the Intel chipset drivers would take care of anything untoward.

B
 

Mackilroy

macrumors 601
Jun 29, 2006
4,048
891
XP Home supports the dual-core processor. You'd need XP Pro for the Mac Pro, however.
 
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