Multi-Core versus 2 separate CPU's

[wossname]

I've just taken delivery of a very nice new PC at work. I opened the Task Manager today to check out the stats and to my surprise there were 2 CPU usage graphs ticking away.

Then I looked at device manager to se if it really was 2 CPU's an there were 2 CPU's listed, both at 2.8ghz (P4). I can't get into the case because its locked.

Is there an easy way to tell if it is really just a dualcore chip or 2 separate CPU's without looking at the motherrboard?

The machine goes like stink

[si_the_geek]

I'm pretty sure that Intel CPUs with HyperThreading show two CPU graphs, but can't test it out as I only have access to a very nice AMD 64.

[wossname]

I'll have to pick the lock then.

[Shaggy Hiker]

The machine goes like stink

Is that a good thing or a bad thing?

The Pentium D is dual-core isn't it? I have one at home, and I don't remember ever seeing two graphs. I'll have to look again.

[thegreatone]

Is that a good thing or a bad thing?

The Pentium D is dual-core isn't it? I have one at home, and I don't remember ever seeing two graphs. I'll have to look again.

Its a good thing, and yes Dual Cores do show up as two graphs, unless of course HTT is turned off, then its back to one core...

T'Wosser, Its most likely Hypr Threaded, or Dual Cored simply because Dual P4's would be extremely expensive and are rarely even used.

[jmcilhinney]

I'm guessing that it's dual core for the same reason that thegreatone mentioned. You may be able to find out from the Device Manager. I have an Athlon X2 and Device Manager reports two processors each named "AMD Athlon(tm) 64 X2 Dual Core Processor 3800+". If Pentiums are named similarly it should be a dead giveaway. Alternatively, I have used WMI to get the processor serial numbers and in my system they match except for one digit. If you can do the same and get a similar result then I'd guess that it would be too great a coincidence for them to be discrete components.

Shaggy, I didn't notice the two graphs at first either.

[penagate]

You could try the Device Manager, under "Processors" it should list only one for a dual core chip and two for a full dual CPU setup (obviously)

[thegreatone]

You could try the Device Manager, under "Processors" it should list only one for a dual core chip and two for a full dual CPU setup (obviously)

No, it would still list two, just like it does with SLI, when it merges them (If you know where i'm coming from here)

[Shaggy Hiker]

Hmmm, I guess I'll have to go have another look.

[jmcilhinney]

You could try the Device Manager, under "Processors" it should list only one for a dual core chip and two for a full dual CPU setup (obviously)

You may be able to find out from the Device Manager. I have an Athlon X2 and Device Manager reports two processors each named "AMD Athlon(tm) 64 X2 Dual Core Processor 3800+".

[Pc_Madness]

Intel Pentium D 820 (2.8Ghz/Smithfield/2x1MB/800FSB/EMT64/XD/Dual Core)

Is the only duel core at 2.8, but I doubt they would be that generous, I think you've just got HT.

[penagate]

I need to learn to read

[RobDog888]

Not too hard to figure this one out. The 2.8 HT is shows as 2 processors but it only has one (1) L2 Cache and is actually a software handling technology that makes it appear as two (2). There were other threads about the licensing of Per Processor server software. The "D" represents a processor that is made with Dual Cores, physically.

HT
http://www.intel.com/products/proces...ium4/index.htm

D
http://www.intel.com/products/proces...um_D/index.htm


See the video on comparisons between the HT and the D.


Ps, I am currently building a new system with two (2) P4 3.0 D processors!

[thegreatone]

Not too hard to figure this one out. The 2.8 HT is shows as 2 processors but it only has one (1) L2 Cache and is actually a software handling technology that makes it appear as two (2). There were other threads about the licensing of Per Processor server software. The "D" represents a processor that is made with Dual Cores, physically.

HT
http://www.intel.com/products/proces...ium4/index.htm

D
http://www.intel.com/products/proces...um_D/index.htm


See the video on comparisons between the HT and the D.


Ps, I am currently building a new system with two (2) P4 3.0 D processors!

RD, so what about the Celeron D's ?
I have one, but no way is it Dual Core... don't suppose you could ig me up some info on that could ya ?

[RobDog888]

I found this - http://www.intel.com/products/proces...on_d/index.htm