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5720 performance on battery

post #1 of 6
5/17/06 at 7:32pm
Thread Starter 
Just wondering if anyone here has done any benchmarks on their 5720 whilst running on battery.

I did and was shocked by how badly this notebook performs when it isnt plugged into the mains. Anybody else here able to provide figures?

3DMark03 - 1834
3DMark05 - 1346

I think most here would agree that these are very low.
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post #2 of 6
5/18/06 at 5:16am
thats normal, considering that your cpu is running at half the speed and your ram is running at half the speed and your gfx card is running at 100/100 frequencies.
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post #3 of 6
5/18/06 at 10:37am
Yea that is normal. My 5720 would get about 100-120 fps in Counter-Strike: Source while it was plugged in and the game at max settings running 1680x1050 resolution. When unplugged though it dropped to 25 frames per second LOL!
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post #4 of 6
6/21/06 at 5:59am
Thread Starter 
The problem is that the FSB underclocks to 74mhz as well as using speedstep which is not normal. In fact i have never known another laptop to do this.
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post #5 of 6
6/29/06 at 6:36pm
There is a BIOS update that addresses this issue you just have to search these forums and you will find other posts about this issue.
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post #6 of 6
6/30/06 at 6:56am
Thread Starter 
Quote:
Originally Posted by tCMears148
There is a BIOS update that addresses this issue you just have to search these forums and you will find other posts about this issue.
The BIOS update you mention i believe was this one discussed here in which there was a problem with playing DVD whilst battery powered. The issue i refer to is one in which the FSB is actually underclocking itself when on battery. This is in addition to the CPU and GPU stepping down. If you own a 5720 (or any other Clevo M570a derivative) look at what happens to the clocks in CPU-Z when you switch from mains power to battery power and you will see what i mean. Edited to add images to show the underclock occuring on the 5720 when used on battery.
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