>From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
>
>CH said:
>I have seen something below, it support 12GB of RAM.
>http://www.intel.com/design/servers/se7501hg2/index.htm?iid=ipp_srvr_mthrbds+se7501hg2_srvr&;
><snip>
>- ----------------------------------
>And it's also ECC memory; a nice plus.
That's probably due to it's intended market as a server. I haven't really seen
the need for ECC RAM since the alpha-particle problems with the 16-64 kb
transition in the early 80's. But for server use, carrying 5 bits of overhead
per 16 may be worth it.
>Windoze would normally
>only go up to 4GB...
Ah yes, I forgot that memory addresses are unsigned quantities. 32 bits = 4GB.
>On the machines with more than 4GB RAM Windoze has to
>invoke Intel's PAE (Physical Address Extensions). A bit of hokyness...
>As long as
>the app can do its thing within 2GB all is well as Windoze will do all
>the address diddling. Other than that the app has to learn how to play
>the address diddling tricks itself. (shades of segment registers, eh?)
Thanks for clarifying that, Chuck! As I used to say when the 8086 came out, "If
it ain't directly addressable, it ain't really a memory address." I think
you've saved me from eating the paper the Apple boast was printed on, as I
offered in another posting... :-)
>I think the Wintel world is still confused as to how they're going to
>get to 64 bits. Intel knows how they want to do it. AMD knows how they
>want to do it. Microsoft (I think) has chosen the Intel way along with
>(as Apple is happy to point out) (ugh!) emulation to support 32 bit.
<grin> I guess those who choose Wintel due to its dominance still have
diversity to deal with.
It should be an interesting few years coming up. If history is any indication,
it's going to get harder and harder for Microsoft to be agile and adapt. I
expect the pace of "dumb engineering decisions" to quicken, with market share
being only minimally impacted.
If things go well, Apple should be able to significantly regain most of its
traditional markets (imaging, audio, video, scientific, but perhaps not
education), while enjoying more modest gains in the larger market. I expect to
see Apple regain from current ~700f the "creative" market to close to 90%,
while nosing up the consumer market from 3% to perhaps 50r so.
I know digital audio folks (for one) are going nuts over the G5. It will
support nearly 10 times as many simultaneous effects and/or tracks than a 3GHz
dual Xeon, and comes standard with an optical audio interface.
Requisite OM content: for those who think market share is very important,
what's the market share of the OM system? :-)
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