BootCamped XP only runs at 1ghz?

FragTek

macrumors 6502
Original poster
May 29, 2006
377
0
Fredericksburg, VA
I've noticed that whatever I do I can't get Windows to scale the processor up to full speed. It seems to be locked at 1ghz, is this a documented problem or is it just my setup?

My MBP specs are in my sig. Any help on this matter is greatly appreciated, thanks in advance!
 

McKellar

macrumors newbie
May 7, 2006
24
0
I have a Bootcamped MBP too, I've noticed running a stats program like CPU-Z that it will run at 1Ghz when doing something relatively unstressful (like just sitting on the desktop) to save power. Try launching an intensive app like game or Photoshop, quickly change to the stats app and you'll notice that it'll be running at 2Ghz (or 1.83 or 2.16, whatever the normal speed is).
 

jared_kipe

macrumors 68030
Dec 8, 2003
2,967
1
Seattle
McKellar said:
I have a Bootcamped MBP too, I've noticed running a stats program like CPU-Z that it will run at 1Ghz when doing something relatively unstressful (like just sitting on the desktop) to save power. Try launching an intensive app like game or Photoshop, quickly change to the stats app and you'll notice that it'll be running at 2Ghz (or 1.83 or 2.16, whatever the normal speed is).
Ahh problem solved. That certainly makes sense.
 

Chundles

macrumors G4
Jul 4, 2005
11,966
379
One of the Core Duo's big ticket items is the way it dynamically scales it's processor power up and down depending on the strain put upon it. I'm guessing 1GHz is just the lower limit of that scale.

Try running some heavy programs and look at the speed then.
 

FragTek

macrumors 6502
Original poster
May 29, 2006
377
0
Fredericksburg, VA
hmmm I tried opening photoshop originlly before my first post to see if it wouls scale but it never did (maybe I missed it).

i'll give it another shot when I get home from work. thanks for the replies!
 

Chundles

macrumors G4
Jul 4, 2005
11,966
379
FragTek said:
hmmm I tried opening photoshop originlly before my first post to see if it wouls scale but it never did (maybe I missed it).

i'll give it another shot when I get home from work. thanks for the replies!
Just opening Photoshop isn't going to do much (especially as it's Windows-native), do some filters on a big image and check it, run a decent game in windowed mode and a bunch of other apps, you know, reeeally push it hard.
 

FragTek

macrumors 6502
Original poster
May 29, 2006
377
0
Fredericksburg, VA
Chundles said:
Just opening Photoshop isn't going to do much (especially as it's Windows-native), do some filters on a big image and check it, run a decent game in windowed mode and a bunch of other apps, you know, reeeally push it hard.
10-4. I'll give it a shot when I get home
 

velocityg4

macrumors 601
Dec 19, 2004
4,721
1,289
Georgia
You can also go to the Power Options control panel and change the power scheme. Going from Portable/Laptop to Home/Office Desk works with AMD Processors when you want to turn off Speedstep.
 

Transeau

macrumors 6502a
Jan 18, 2005
869
12
Alta Loma, CA
It's "C1E" and "EIST"

C1E = Sleep State C1 Enhanced. It dynamicly disables unused parts of the CPUs such as Cache and pipelines.

EIST = Enhanced Intel SpeedStep Technology. It dynamicly adjusts the Core clock rate (1ghz ~ max) and it dynamicly adjusts the core voltage from .90 to 1.5v.

Mac OS X currently only makes use of the C1E Sleep State. The "SpeedIT" project is supposed to make use of the EIST. EIST, when correctly enabled can bring the CPU down to room temp when idle.
 

FragTek

macrumors 6502
Original poster
May 29, 2006
377
0
Fredericksburg, VA
Transeau said:
It's "C1E" and "EIST"

C1E = Sleep State C1 Enhanced. It dynamicly disables unused parts of the CPUs such as Cache and pipelines.

EIST = Enhanced Intel SpeedStep Technology. It dynamicly adjusts the Core clock rate (1ghz ~ max) and it dynamicly adjusts the core voltage from .90 to 1.5v.

Mac OS X currently only makes use of the C1E Sleep State. The "SpeedIT" project is supposed to make use of the EIST. EIST, when correctly enabled can bring the CPU down to room temp when idle.
oooh, is there a working beta for that project or is it still in the works? that sounds like a necessity!
 

ph0rce

macrumors 6502
Jun 25, 2005
303
0
well my iMac 2GHz runs at full speed when doing something big (like defrag) but doing nothing it is 1GHz or slightly less... on each core that is