Just how cool does the new Nehalem Mac Pros run?

Yes, I am also interested.

iStat Pro is free for anyone who wants it here:

http://www.islayer.com/apps/istatpro/

Would be interesting to see the fans speeds too.

For comparison, here are some Early 2008 Mac Pro stats:

http://images.macrumors.com/vb/images/attach/jpg.gif

heres my istats, 2.66 quad

wayne226 said:

http://images.macrumors.com/vb/images/attach/jpg.gif

heres my istats, 2.66 quad

Click to expand...

CPUA is 53 degrees, and your 100% idle. How long were you idle? My 2006 2x2.66 at 10% CPU usage, both CPU's are around 32-34 degrees with fan speeds at minimum.

53 seems hot for being idle.

cpu has come down to 30 now,just done encoding borat with handbrake.
was idle for 3 mins.
man this thing is quick.

wayne226 said:

http://images.macrumors.com/vb/images/attach/jpg.gif

heres my istats, 2.66 quad

Click to expand...

Interesting. You have an extra fan in the list.

By the way: if you arrange iStat's display
vertically (press the 's' key), you may get
to see more temperatures.

The Nehalems run much hotter than the Penryns because they have an integrated memory controller, among other things.

The Nehalems will all idle at about 35-50 Celsius, and load at over 70.

Don't let the temperatures scare you, the Nehalems are built to run at those temperatures.

heres another shot all cores going
http://images.macrumors.com/vb/images/attach/jpg.gif

jjahshik32 said:

Curious, anyone have any istat temperature readings to do some comparisons to the last generation 8 core models?

I remember the 2.8GHz 8 core model I had with 16GB of RAM used to heat up my 12x14 room (pretty good sized room).

Click to expand...

I bet that your monitor and the light you are using will heat up your room much faster than computer...

osin said:

I bet that your monitor and the light you are using will heat up your room much faster than computer...

Click to expand...

Hardly.

24" Cinema Display does at most 212W when charging a macbook (60W).
Add in 2 40W lights and you're at 232W.

The MP probably idles around that, and goes a lot higher during load.

Have you upgraded the RAM in your quad? We are wondering if it can go to 12 or 16GB... Thanks!

i put 8gb in, i will wait until the prices come down on the 4gb sticks.
at the moment its quick enough with the 8gb,for the kind of tasks that i am doing
cheers

rylin said:

Hardly.

24" Cinema Display does at most 212W when charging a macbook (60W).
Add in 2 40W lights and you're at 232W.

The MP probably idles around that, and goes a lot higher during load.

Click to expand...

Exactly.

Don't for get those who order the HD 4870 will see an even higher bump as well, as it seems to idle ~150W.

nanofrog said:

Exactly.

Don't for get those who order the HD 4870 will see an even higher bump as well, as it seems to idle ~150W.

Click to expand...

er... so it'll be more expensive than my Mac mini to use...

I got my 2.66 quad-core Mac Pro in stock configuration today and also noticed that it runs quite a lot hotter than my old '06 Mac Pro. It usually idled at about 25°C on both CPUs while the '09 idles at mid-40's. Well, I guess thats normal

my 2.66 (eight) consistently runs between 120 degrees and 159. after about an hour of rendering and transcoding last night CPU A was higher... i want to say in the neighborhood of 170.

it sits between my desk and dresser with four inches of space on both sides, nothing in front of it and 8 inches space from the wall behind it.

Dragonforce said:

I got my 2.66 quad-core Mac Pro in stock configuration today and also noticed that it runs quite a lot hotter than my old '06 Mac Pro. It usually idled at about 25°C on both CPUs while the '09 idles at mid-40's. Well, I guess thats normal

Click to expand...

For Nehalem, it's normal.

Hot little devils.