Dual Core Processors and XP Home?
win...@yahoo.com
about dual core?
Is XP Pro required for dual core processors (e.g. AMD Athlon 64 X2) or
will XP Home
support both cores?
Thanks
W
Tony Linguini
http://www.microsoft.com/licensing/highlights/multicore.mspx
Tony
<win...@yahoo.com> wrote in message
news:1137251993.8...@g47g2000cwa.googlegroups.com...
win...@yahoo.com
link
which seems to imply that XP Home supports mulitcore processors.
Since HP offers mulitcore PCs without specing that XP Pro is necessary,
I assume that XP Home will support multicore processors....I just hope
that is the case!
W
Tony Linguini
Eric
dont hold your breath, MS doesnt care if its HT, Dual Core or separate CPU's
- in all cases they would be implementing an SMP OS which XP Home isnt.
You'll need XP Pro - or Linux (no charge here). MS has always charged for
SMP and the more CPU's (cores sockets or HT - dont care) the more you pay.
so you pay for initial SMP by buying XP Pro, thats good for 2 cpu's (or
possibly 2 HT cpu's) i think, after that its an upgrade fee(s) for more
cpu(s)
Eric
daytripper
XP Pro will show four "processors" with either two single-core HT Xeons or two
dual-core non-HT Xeons, and allocate tasks to all of them.
No idea what XP Pro will do with two dual-core HT Xeons. Yet.
/daytripper (Yeah, I heat my house with these things ;-)
Benjamin Gawert
> dont hold your breath, MS doesnt care if its HT, Dual Core or separate CPU's
> - in all cases they would be implementing an SMP OS which XP Home isnt.
> You'll need XP Pro - or Linux (no charge here). MS has always charged for
> SMP and the more CPU's (cores sockets or HT - dont care) the more you pay.
That's BS. MS clearly said that they are counting physical CPU sockets,
not logical cpus or cores. XP Home uses the same kernel as XP Pro but
with the limitation to support only one physical cpu socket but it still
supports dual cores and hyperthreading. Being based on the same kernel,
XP Home is as much SMP as XP Pro...
> so you pay for initial SMP by buying XP Pro, thats good for 2 cpu's (or
> possibly 2 HT cpu's) i think, after that its an upgrade fee(s) for more
> cpu(s)
XP Pro supports two physical sockets which means it shows 4 cpus when
running two dual cores or two HT processors, or showing 8 cpus when
running two dual cores with HT...
Benjamin
Yousuf Khan
> dont hold your breath, MS doesnt care if its HT, Dual Core or separate CPU's
> - in all cases they would be implementing an SMP OS which XP Home isnt.
> You'll need XP Pro - or Linux (no charge here). MS has always charged for
> SMP and the more CPU's (cores sockets or HT - dont care) the more you pay.
> so you pay for initial SMP by buying XP Pro, thats good for 2 cpu's (or
> possibly 2 HT cpu's) i think, after that its an upgrade fee(s) for more
> cpu(s)
> Eric
XP Home will support multiprocessing in the form of dual-cores or
Hyperthreading. It just won't support it in the form of dual processors.
It's an artificial distinction implemented by Microsoft, but the
Windows kernel can distinguish between the different forms and allows
those specific cases to work on XP Home.
Yousuf Khan
P Ruetz
<win...@yahoo.com> wrote in message
news:1137257799.0...@f14g2000cwb.googlegroups.com...
I have XP Home and dual core PD 830. It works fine and both cores are
working. In fact, it works much better than I expected it to.
Peter
Eric
XP-Home does not support multiprocessors, XP-Pro does.
http://www.microsoft.com/windowsxp/pro/howtobuy/choosing2.mspx
Eric
Eric
How do you know both cores are working?
see: http://www.microsoft.com/windowsxp/pro/howtobuy/choosing2.mspx
Eric
Bill Davidsen
Count ZIF sockets on the board, if you stop at one it's supported.
I am told that XP Pro will support dual dual-core HT Xeons (as eight
CPUs). Have no idea if that's the case, but XP Home seems to work with
the dual core "EE" (HT enabled) CPU.
--
bill davidsen
SBC/Prodigy Yorktown Heights NY data center
http://newsgroups.news.prodigy.com
Mike Smith
That's right, XP Home does not support multiple *processors*. Microsoft
defines a processor as a module that plugs into a socket. That
processor can be dual-core, multithreaded, or both, and XP Home will
still support it. Page 3 of the .DOC file posted by win...@yahoo.com
clearly states this.
--
Mike Smith
Mike Smith
Presumably because Task Manager shows two logical processors?
--
Mike Smith
P Ruetz
"Eric" <nos...@email.com> wrote in message
news:Sd6dnZE2FbA...@comcast.com...
>P Ruetz wrote:
>
>>
>> I have XP Home and dual core PD 830. It works fine and both cores are
>> working. In fact, it works much better than I expected it to.
>>
>> Peter
> How do you know both cores are working?
> see: http://www.microsoft.com/windowsxp/pro/howtobuy/choosing2.mspx
> Eric
>
>
It is pretty easy to tell. Look at task manager. Fire up one job, the CPU
goes to 50%. Fire up another it goes to 100%. You can also see the usage
per processor (each processor counts as 50%). Also, I can run two jobs
without any loss of performance. (Try that with a single core.) My 5
hours+ regression tests on 2.4G P4 run in 2 hours on a 3.0G PD. Sounds to
me like both cores are working. Note: that is only after I broke them into
two groups to be run in parallel. Otherwise it would have taken 4 hours
because only one CPU would be used.
For everyday tasks, one big improvement is the lack of system slowdown when
something CPU intensive starts up. You barely even know it is running. Of
course, when two CPU intensive jobs are running and try to start a third,
then you can tell. (I set my regressions to run at "BelowNormal" priority to
keep the machine responsive even with heavy CPU load).
Peter