[nflug] Hardware questions

[joshj at linuxmail.org]

Thus spake Jason O'Bara on Tue, 2 May 2006

> I was looking at a new Dell machine for home, and a few of the specs made me 
> wonder:
>
> 1) A dual-core processor is seen under Linux as two physical ones, correct?
> 2) Hyper-threading only works in Window$, correct?

I'm not sure, but I think that Linux (and Windows) view both
dual core and hyperthreading processors as 2 processors. I have one
computer that is p4 w/ht. /proc/cpuinfo shows two processors. But I
enabled the kernel option "SMT (Hyperthreading) scheduler support" which
apparently allows Linux to make better decisions about how to schedule
stuff in Hyprethreaded processors. From the kernel help:

CONFIG_SCHED_SMT:

SMT scheduler support improves the CPU scheduler's decision making
when dealing with Intel Pentium 4 chips with HyperThreading at a
cost of slightly increased overhead in some places. If unsure say
N here.


But after reading the other replies to this post I'm not sure. I always
thought that p4 ht's were seen as 2 proc's by the OS, weather GNU or
Windows. I don't have Windows on this p4 to test that out.

-Josh

> 3) is there any difference between these two video cards? Dell sees it as a 
> $281 difference. I am not much of a gamer these days, and I just want 
> something decent.
>
> 128MB PCIe x16 ATI FireGL V3100, Dual Monitor VGA or DVI/VGA Capable
>
>
>
> 128MB PCIe x16 nVidia Quadro FX 1400, Dual Monitor DVI or VGA Capable
>
>
> Thanks!
>
>
>
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>
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