one day I took my computer apart to clean it and forgot to plug in the cpu
fan. bye bye Pentium Pro.
From that I went to a Pentium III Tualatin, Dual processor system. They
were 1.26 each, and the system was stable, and relatively fast.
That lasted until August of this year when the whole system decided to fall
apart one part at a time.
So now it is the 840.
This is a nice system.
Jack
"Brad" wrote in message
news:5014812@discussion.autodesk.com...
Pentium Pro 200??? I haven't seen one of those in many years. Had one in
the 90s. Did you jump straight from a Pentium Pro to the Pentium D (840),
or were there stops along the way?
"JMT" wrote in message
news:5014641@discussion.autodesk.com...
My board and bios know that the 840 does not have hyperthreading so that the
option to enable hyperthreading is not visible. There is a note in their
manual that explained to me why I did not see the hyperthread option.
I like my 840. it is stable, quiet, and is faster than what I had before,
which was not slow either, but of a past generation.
As I understand hyperthreading or dual cores, not all software is programed
to use them. On the other hand, Windows XP does use it. XP will parcel out
the work to both cores, so that neither one will ever get maxed out. My old
Pentium Pro 200 would hit 100% all the time, and I would have to sit and
wait for it to calm down. Since I have obtained my fetish for dual cores, I
have not seen a lock up at 100%.
2cents will get you almost half way to 5 cents.
Jack Talsky
wrote in message news:5013097@discussion.autodesk.com...
I've been working some comparisons between my P4D 840 and my X2 4600 and
noticed something. Watching the Windows Task Manager during some heavy Civil
3D surface recalcs, I saw the CPU performance graphs looked different. The
graph for the X2 showed 2 processors chunking away semi-independently, while
the 840 looked just like the graphs of a single-core CPU with
hyperthreading - high points on one graph matching equally low points on the
other.
Checking BIOS, I found that the system (HP xw-4300) had been shipped with
hyperthreading turned ON. Since Intel says that the 840 does not support
Hyperthreading, I turned it off and tried again. Now my CPU usage graphs
look pretty much the same as the X2, and the box is running better. So it
appears that "does not support hyperthreading" is sort of a half-truth - not
that HT won't work, but that if it is on, you will only see one core. If you
get the system, it might be a good idea to check the BIOS setting.