Need Help!!!! CUPZ shows only 1 CPU loss another one

[mbimac]

early 2008 Mac pro 2x 4core E5462 @2.8Ghz (bought 2 monthes ago has 3yrs apple care)

Today I ranning in OS Vista x64 suddently I lost one of CPU
but in device manager there are showing 8 core(8 cpu@2.8Ghz)
and I got cpu marks around 4800(according to Performace Test7.0);3Dmark vantage cpu score 10900 is that normal or it should doudle 10900x2=around 20000? thanks need help

anybody here has any idea what's going on ?

many thanks

if this problem cannot be solved I will call apple to fix it

 

[grue]

Let me guess: Vista Home Premium?

Also, for the love of all things unholy and holy alike, please cut back on the extraneous punctuation.

 

[macz1]

as long as there are no problems in OS X everything should be fine. Probably a software-related issue (as grue said, the basic versions of vista allow only one CPU to be used even if there are to of them...)

 

[mbimac]

as long as there are no problems in OS X everything should be fine. Probably a software-related issue (as grue said, the basic versions of vista allow only one CPU to be used even if there are to of them...)

Thank you

I am using vista Home Prem (x64), after I restart to win XP Pro everything is fine.thanks ,yes you are right maybe it's software's issue


BTW does windows vista Home Premium x64bit support 2 cpus? I never know about that OMG!!.

 

[grue]

Thank you

I am using vista Home Prem (x64), after I restart to win XP Pro everything is fine.thanks ,yes you are right maybe it's software's issue


BTW does windows vista Home Premium x64bit support 2 cpus? I never know about that OMG!!.

only Business and Ultimate support multiple sockets.

 

[mbimac]

only Business and Ultimate support multiple sockets.

Thank you I will keep this in mind, today I just install the vista ultimate 64bit

I am still keeping my vista Home Prem x64

 

[gugucom]

XP-32 Pro shows all four cores on a MacPro1,1

 

[mbimac]

XP-32 Pro shows all four cores on a MacPro1,1

Yes I believe so, only high version of windows can support multi-CPUs [xp pro 32/64; vista business ultimate 32/64]

i just know this yesterday,bcz I have never used 2 cpus system since I bought Mac pro.

thank you

 

[JesterJJZ]

Multiple (crippled) versions of an OS is one of the most asinine concepts in computing.

I love the different versions of Leopard that Jobs introduced at WWDC07...

http://www.youtube.com/watch?v=8fEBr6umj5Y