Just how cool does the new Nehalem Mac Pros run?

[jjahshik32]

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).

[Infrared]

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.

[Infrared]

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

162063

[wayne226]

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

heres my istats, 2.66 quad

[tobyg]

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

heres my istats, 2.66 quad

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.

[wayne226]

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

[jjahshik32]

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

Wow 3 minutes hehe.

[Infrared]

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

heres my istats, 2.66 quad

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.

[Salavat23]

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.

[wayne226]

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

[osin]

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).


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

[rylin]

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

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.

[Outsider]

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

[wayne226]

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

[nanofrog]

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.
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. :eek: ;)

[RemarkabLee]

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. :eek: ;)

er... so it'll be more expensive than my Mac mini to use... :eek: ;)

[jjahshik32]

Here is a comparison between the 08 model vs. the 09 model.

Power usage is amazingly good for this class machine. Past Mac Pros would hit the 550 watt range under full load; the MP09 maxes out at about 350 watts under the most severe load.

http://macperformanceguide.com/Reviews-MacProNehalem.html


Wow thats a HUGE difference, I bet it wont get my room as hot anymore!

[Dragonforce]

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 :p

[Fomaphone]

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.

[nanofrog]

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 :p
For Nehalem, it's normal. ;) :D

Hot little devils. :eek: :p