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Dual CPU in my PC?

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BuddyBill   01-01-2005 at 06:45:43 PM

I just setup a new Dell XPS system. I was trying to find some good utility(ies) for comparing its performance vs my old pc, when I noticed that one system checking applet reported that I had two cpus in my pc. I need a way to verify (w/o opening case please).

side items:
whats a good free website or download for generating hdd, cpu, video benchmarks to compare systems?
if I do have two cpu, where can I go for info on what software or processes will take advantage of this?

Thanks

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silverpig   01-01-2005 at 06:55:38 PM
- 0 +

1. You most likely just have a single P4 cpu with hyperthreading. It shows up in the windows task manager as 2 cpus.

2. Look up aida32

s signature has been formatted to fit your scr

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RichPLS   01-01-2005 at 06:57:18 PM
- 0 +

The Dell XPS is not available with dual CPU's. They are virtual CPU's, but the OS can not tell the difference.

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BuddyBill   01-02-2005 at 03:28:18 AM
- 0 +

One CPU makes sense, I did not expect a second CPU, if the Hyper Threading technology is causing the mis-read, that works for me. With Win XP Home SP2, In Task Manager, it even shows the CPU Usage History (one graph per CPU) of utilization for both separately!

Tried Aida32, is interesting, but seems like it has not been updated since 4/2004. It struggled with my x800 ATI Radeon video card (PCI Express). Only benchmark it does is memory read/writes (read 5621 MB/s, write 2227 MB/s). T

Thanks!

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RichPLS   01-02-2005 at 03:31:34 AM
- 0 +

It is not a mis-read, as far as the OS is concerned, there are two CPU, just virtual ones within one physical one.
This is why multithreaded programs get a performance boost with the P4 over the Athlon.

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And the sign says "You got to have a membership card to get inside" Huh
So I got me a pen and paper And I made up my own little sign</pre><p></font color=red>

Reply to RichPLS
endyen   01-02-2005 at 04:01:28 AM
- 0 +

Quote :

This is why multithreaded programs get a performance boost with the P4 over the Athlon.


Most multithreaded progs are designed for systems with more than 1 real processor. If they have not been recoded for HT, an A64 will outperform the P4, and really outperform it if HT is enabled. HT is okay where progs have been written for it.

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RichPLS   01-02-2005 at 04:18:02 AM
- 0 +

What I said was the P4 will get a boost in speed if the program is multi=threaded, and the Athlon does not get this boost in speed, irregardless of which one is overall faster or not.

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And the sign says "You got to have a membership card to get inside" Huh
So I got me a pen and paper And I made up my own little sign</pre><p></font color=red>

Reply to RichPLS
endyen   01-02-2005 at 04:34:26 AM
- 0 +

And what I said was that it depends on the format of the multithreading. Photoshop is designed to run on multi-processor systems, it is multithreaded. If you want to run it on an HT P4, it runs faster with HT dissabled. Most multithreaded progs are not HT coded. Certain functions will cause HT to slow down. A classic example is in wait states. If a vertual processor encounters a wait state, that state is initiated in bothe virtual processors.

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