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Sager NP4750 cpu voltage mods and temps results Review - Page 4

post #61 of 105
10/28/04 at 4:04pm
hmmmm. weird. actually, I am not using a screen saver. just set my monitor to turn off after a few minutes. so, i would suppose it would be running normally behind that black screen. If you're concerned, you could try that.
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post #62 of 105
10/28/04 at 4:17pm
Apparently the screensaver was making the cpu work at max state, 2200Mhz. I'm now using "blank" as a screensaver and all is fine.

Your suggestion works also.
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post #63 of 105
10/28/04 at 7:18pm
Thread Starter 
Hello dpawn and wbeck.

I guess us three are the only ones who have attempted this. O well.

I didn't choose 1500mhz because if it being in the middle of anything. When I ran my benchmarks and burn-in tests, I determined it to be the highest stable multiplier I could use at the voltage of 1.1 volts that I wanted to be at. Every CPU is different, so it isn't suprising that you had to increase your voltage a little. Actually, I am shocked that any of us can lower our voltage as much as we can. That just shows how awesome AMD's .13 process is. Hopefully they will release some .09 chips for the 754 platform.

For your middle multiplier, I would pick a voltage that you want to achieve, then test your system to see how high you can go at that voltage. I chose 1.1 because I believe that to be the middle, voltage wise. Don't forget about the AMD PowerNow Dashboard. It will verify that your settings are working right.

Isn't it weird that certain apps will work ok and not others. It just goes to show that some apps are more demanding than others. DOOM3 appears to be the most sensitive for me. I have a 3.2 Prescott P4 in my HTPC, and I oveclock it to 3.6Ghz. I can encode divx files for 1 week straight at that speed. The CPU gets to 71c. DOOM 3 will crash in the first 5 mins, though. I then have to slow it down to 3.52Ghz for DOOM3.

Burn-In Test is a good tool for determining stability. You have to tweak the default settings, though. It defaults all of the test to 50% load. I set the CPU and mem tests to 100% when I do my tests. BTW, I tested my notebook for 27hours at 2.2ghz at 1.325 volts. I have been using that setting for 1 week now.

NetMav
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post #64 of 105
10/28/04 at 7:34pm
I dont wanna be a bother, and tell me if I am, but how are the other battery saving techniques coming along?
I havent tried doom3 yet with the new voltage settings. I will try it out though.

update: eh, I played doom 3 for about 5 minutes, in Hell. Nothing seemed to be wrong. I dont really feel like playing it right now, but 5 minutes should be a decent indicator at the proc's ability to perform at 1.35 v. Not the best indicator, but, eh, maybe later, when I feel like playing.
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post #65 of 105
10/28/04 at 8:49pm
Thread Starter 
I have had to postpone my research a little. I have an idea about how to enable PowerPlay, but it involves flashing my videos cards BIOS with one that I modified. I obtained a BIOS from a Dell Inspirion 9100 and was able to compare it to BIOS dump of the one from the 4750. The BIOS dump I have from the 4750 can't be used to flash, however. The problem I have is that since our notebooks don't have a floppy, I don't have write access to anything if I boot from a cd. I have a utility to extract the original BIOS and save it to a file, but no place to write it to. When I have time, I will partition my hdd with a fat partition, and then make a backup of my BIOS to it. Until I have a backup copy, I will not be flashing the mod one I have.

This would be a lot simpler if Sager/Cleve would just release a BIOS update that supports this. Maybe if enough of us pester them about it. I can't get through to support though.
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post #66 of 105
10/28/04 at 9:23pm
Even though I have never done it, isn't it possible to boot from a memory stick. I think there is a setting to do this in the bios of our 4750's. I'm not on my laptop now but I'll give it a try when I have a chance and repost.
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post #67 of 105
10/28/04 at 9:32pm
Thread Starter 
Yes, it will. All of my systems are XP, so I don't have a way of setting up DOS on my USBKEY.
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post #68 of 105
10/29/04 at 1:25am
"In case something goes wrong, make a backup of your original BIOS before flashing. You can use ATITool to save your BIOS from Windows." I found this site http://www.techpowerup.com/bios/ that has a whole bunch of ATI BIOSes. Hope it can help you
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post #69 of 105
10/29/04 at 10:21am
Thread Starter 
ATITool doesn't work. It outputs a file size of only 1.5K. That is way too small. I will only use an ATI utility when I do it.
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post #70 of 105
10/29/04 at 3:56pm
Something strange is happening this morning. I noticed the CPU temp is 35*C but the hard drive temp is 60*C. I'm only using the internet and not accessing the hard drive. Any ideas how to get the temp down? The touchpad is really hot.

I'm using fan firmware S1
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post #71 of 105
10/29/04 at 4:48pm
Answering my own post:

Using CrystalCpuid I am getting the cpu temps down to 32*C and I like that because when you use fan firmware S1 no fans run until the temp is ~40*C. It is soooo nice and quiet.

I'm assuming the fan firmware only detects the temp of the processor and not the hard drive nor the interior of the laptop. If that is the case, I guess that is why the hard drive gets so hot.

Thinking of putting back fan firmware S2. There goes my silent notebook.
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post #72 of 105
10/29/04 at 7:08pm
Thread Starter 
I would use 1.03 BIOS and fan firmware S2.
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post #73 of 105
11/8/04 at 1:35am
HOw goes the ATI project? any progress?
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post #74 of 105
11/9/04 at 6:29pm
Just to let you guys know that there is a new version of CrystalCPUID 4.0.2.220. It has a new function you can play around with - MSR Editor. If any of you know how to use it, please let me know.
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post #75 of 105
11/11/04 at 9:59pm
Cool, thanks for the heads up.
Yeah, I was playing UT2k4 today and about 30 minutes into a CTF match, the computer unexpectedly rebooted. Nerve-racking thats for sure. I tried UT again and it did the same thing, this time, however it rebooted less than a minute into the match. I think its my voltage. I upped it to 1.4v @ 2.0ghz and now lock it there when playing UT. I havent gotten extensive testing yet, as i have a class right now. Will post back later with results.
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post #76 of 105
11/12/04 at 2:55pm
So from what I understand the most heat is coming from the graphics card, and you are currently finding out a way to mess around with the bios so that it produces less heat. Sweet.
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post #77 of 105
11/12/04 at 3:04pm
tweak on guys, tweak on I'll be joining you shortly, Sager should be shipping me my new 4750 next week
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post #78 of 105
11/12/04 at 9:20pm
Have fun tweaking. My external fan method works great for me. That's I how I can game for 5 hour intervals. Then you have to eat.
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post #79 of 105
11/13/04 at 12:56am
You're right Mayaman2. Forget the tweaking. I gave it up 2 days ago and decided to buy a few pounds of dry ice. I made a special tray to sit the notebook upon - approx. 2.5cm above. It works like a dream. I have temps in the low teens. The only problems I have are:
1) It takes about 10 minutes in the morning to warm up. Enough time to drink a good hot cup of coffee.
2) I have to wear mittens, otherwise I'd freeze my fingers up.
3) I have to defrost the screen. When it's to thick, I use an ice scraper.

Happy computing!!!
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post #80 of 105
11/13/04 at 2:54am
dpawn, where did you find the new CrystalCPUID?
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