This show a fundemental lack of knowledge about Intel
CPUs and their
busses.
Fundamental? No. But about everything else, yes. Remember, I'm of more
ore less a PC generation. Everything before my 486, I learned secondhand,
and not to well. But yeah, I really haven't the faintest.
8088 actually runs for the same clock about 20% slower
than the 8086
but using significantly fewer glue chips.
Hmm... but it still had the half width bus, right?
The 386sx is a lower pin count 386 that uses a 16 bit
bus insted of the
32bit again for lower cost and lower power. Bus bandwith was not half
as it is faster than that.
Yeah, but it's still a 'downgrade'. But the 386SX was a fairly good
success, and I take back anything bad I said about it. But once again, the
386SX didn't give the 386 all it's glory.
Celeron, PII with big internal cache. I just powered
up a celeron 333mhz
with 128k internal cache and it's remarkably fast(and cheap).
Yeah. I'm not argueing with that. Actually, the 128K's at full clock
speed, not half, like in a PII, so eventually, you loose an amazingly small
amount of performance. When you add in the fact that you can overclock the
Celeron a lot more than a PII (a 333 can go to 450MHz, according to some
reports, but I don't have that kind of a cooling system. Tropics, and all.)
286 never saw a 288 version.
I'd never heard of one. Although that makes sense, as it'd be pretty bad
to have a 2nd generation x86 16-bit processor with some of the 'cost
saving' but no longer necessary features of a 8088.
ISA and EISA bus machines are slow as the BUS speeds
are limited to
~8mhz. This is where many older machines hit the speed wall. PCI and
other extended busses are faster (to the limits of the cpu level bus).
Yeah, but IIRC, some parts of even the newest XEON based system are 8 bits
(like the BIOS). You've got 16 interrupts, half of which are taken up by
things as simple as clocks, etc. and then you've got a whole bunch of parts
which should share IRQ's but don't... I say it's well past time that we put
the PC architeticutre to rest.
Allison
Tim
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