Laptop and sound card for ubuntu studio

Kiernan Holland rofthorax at
Tue Sep 1 23:37:08 BST 2009

My Dell Dimension 9150 has APIC, but only 23 interrupts.. I suppose with the
750i there will be more since it is quality hardware, but someone I talked
to was unsure whether it would have good linux support.  Anyhow.. It seems
to be that the best choice is not to get the Core 2 Duo's but the i7, as it
supports hyper-threading, evidently according to the wikipedia article on
the i7, the Core Duo doesn't support hyper-threading.. Maybe that's just the
core duo and not the core 2 duo, nope the core 2 duo doesn't, says it is a
descendent of the Pentium 3 architecture. The Pentium Extreme is the one I'm
building, is overclockable to 4.2 Ghz.  Also said the Pentium Extreme has 31
stages in it's execution pipeline, but that the branch prediction penalty is
greater with this many stages, but that the internal ALU's run twice as fast
as the clock cycle to make up for it. All I know, from my discussions with
my brother who's done work in things like fault tollerant systems, you need
a high degree of branch prediction for linux because of the greater amount
of indirection. I also read that part of the problem with the netburst is
that it makes other operations go slower, and references to bit-shifting
operations were given. If it has hardwired floating and integer operations,
I don't know how much better it would be to have bit shifting operations
since they are only going to improve multiplications and divisions by
multiples of 2. I think a shared cache would be better than a divided cache,
but it's a cheap chip, cost me 99 dollars at tiger direct. A Core 2 Duo
would probably run me more and i7's that compare to the Pentium Extreme in
having hyper threading, go from 200 to 1000 dollars. I'd rather get the best
of the last line, than wait for the best of the next.

On Tue, Sep 1, 2009 at 3:45 PM, Kiernan Holland <rofthorax at> wrote:

>> I would not compare this interrupts file with a more modern machine.  A
>> lot has changed in the years since the P4, and for the better.  Netburst
>> is dead, hurray.  The PIC has been replaced by the APIC.  If you care
>> look them up in wikipedia, the point is that a modern machine will not
>> look like the above, and this is not only to be expected, but is a good
>> thing.
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