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4750 Slows Down After Service Pack 2 - PowerNow?

post #1 of 14
8/27/04 at 3:55pm
Thread Starter 
I got my 4750's yesterday (Yeah, I bought 2). I installed XP and all the latest drivers. When I looked at the control panel (system), it said 3400+ running at 2.2 GHz. That's right, so I'm happy with that.

Well then I installed Service Pack 2 and it now shows 3400+ at 800MHz. I close the control panel (system) and open it back up. Then it says 3400+ at 1.79 GHz.

I checked my power settings it says "Portable/Laptop" and I have the AC cord plugged in. I installed the AMD drivers before SP2. Maybe SP2 screwed it up and I have to install again.

I think it's a power management issue somewhere. Also, where is "PowerNow!" and the dashboard that I keep reading? I didn't look for it before SP2, but now I'm trying to find it since I'm having problems.

Also, this happened on BOTH laptops. Any ideas?

Thanks
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post #2 of 14
8/27/04 at 4:02pm
lol, this is what it's supposed to do. on portable/laptop mode powernow is enabled and the cpu can go anywhere from 800MHz to the full 2.2GHz instantly. On home/desktop or always on it will stay at 2.2GHz. I prefer laptop mode because the fans don't come on as much and I get the power I need when I need it for games.
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post #3 of 14
8/27/04 at 4:06pm
And a hotter hard drive temperatures. 5 C difference. You might be able to do this if your using an external heat pipe.
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post #4 of 14
8/27/04 at 5:19pm
Thread Starter 
Quote:
Originally Posted by OGREtheBUFFOON
lol, this is what it's supposed to do. on portable/laptop mode powernow is enabled and the cpu can go anywhere from 800MHz to the full 2.2GHz instantly. On home/desktop or always on it will stay at 2.2GHz. I prefer laptop mode because the fans don't come on as much and I get the power I need when I need it for games.

You guys are missing the point. It wasn't doing this until I installed Service Pack 2. It was constantly staying at 2.2GHz. Now it is always at 1.79GHz. I can see the power saving while it's not plugged in. However, it should or you should have the ability to make it run at full speed.
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post #5 of 14
8/27/04 at 5:47pm
The concept is that it will remain at the lower clock speed until you are actually using the extra power, thus lowering temperatures and power consumption.
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post #6 of 14
8/27/04 at 5:49pm
get powersitchxp and enable to max performance, you will see it go full speed

I'm using sp2 so its not the os.
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post #7 of 14
8/27/04 at 5:54pm
also, try running prime95 or something really cpu intensive and see what clocks you get then.
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post #8 of 14
8/27/04 at 5:55pm
Thread Starter 
Quote:
Originally Posted by PAPPP
The concept is that it will remain at the lower clock speed until you are actually using the extra power, thus lowering temperatures and power consumption.
Right. I understand that. The problem I having is understanding the following:

Fresh Install & Latest Drivers = 2.2GHz sitting at idle
Install Service Pack 2 = 1.79GHz sitting at idle

The heart of my question is this. Why wasn't it "working right" before service pack 2. I would think it would work right with a fresh install. According to you guys, is that it did not start working correctly until I installed service pack 2. My question is why? I'm not trying to argue here, but something isn't adding up.
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post #9 of 14
8/27/04 at 5:59pm
ok first, what power settings is your 4750 on? try all of the various modes and see what happens (right-click desktop > properties > screen saver tab > power settings)
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post #10 of 14
8/27/04 at 6:05pm
Thread Starter 
Quote:
Originally Posted by OGREtheBUFFOON
ok first, what power settings is your 4750 on? try all of the various modes and see what happens (right-click desktop > properties > screen saver tab > power settings)
Thanks. That was it. It must have been on the Home/Office Desk scheme before the install. Then service pack 2 must have changed it to portable/laptop. Hmmm...This works differently than my old laptop. It would automatically change the power scheme based on the power. So if you were using the AC cord, it would change the scheme. If you were on battery power it would change back to laptop.

Sorry about that guys. But I knew something was a skew So are there any drivers out there that do what I was saying? 100% on AC Power and variable on battery? Or do all of you guys trust Windows to bump up the processor on demand?

Thanks
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post #11 of 14
8/27/04 at 7:59pm
your not on the laptop setting though, then it should be at 800 when idle. it clocks up very fasts.
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post #12 of 14
8/27/04 at 10:12pm
Quote:
Originally Posted by Black Mammoth
Thanks. That was it. It must have been on the Home/Office Desk scheme before the install. Then service pack 2 must have changed it to portable/laptop. Hmmm...This works differently than my old laptop. It would automatically change the power scheme based on the power. So if you were using the AC cord, it would change the scheme. If you were on battery power it would change back to laptop.

Sorry about that guys. But I knew something was a skew So are there any drivers out there that do what I was saying? 100% on AC Power and variable on battery? Or do all of you guys trust Windows to bump up the processor on demand?

Thanks
no prob, I figured that was the "problem"

there aren't any drivers that would change the power settings like that. basically, If you're on battery power use the laptop/portable or max battery setting.
if you're plugged in, use either the home/desktop or always on setting to keep it at 2.2GHz. I use laptop/portable 24/7 because I don't want to have to hear the fans all the time when I'm plugged in.
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post #13 of 14
8/27/04 at 10:13pm
As for me. I like the sound of the fans. So I keep it on always on.
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post #14 of 14
8/28/04 at 1:56am
mayaman, you are a strange one.
Black Mammoth, did you make sure you had the latest AMD driver?
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