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9860 really slow when running on battery power.

post #1 of 4
Thread Starter 
I've had my new Clevo P900 (9860) for a few days now and it's terrific! My only issue so far is that yesterday I noticed it running very slow when I was running it off battery power. The Front Side Bus scales from 4x200MHz down to 4x164MHz which takes the CPU speed back to 2.95GHz - sounds fast but when I ran SiSoft Sandra's arithmetic benchmark I only got just over 3,800 Dhrystones (as opposed to mains power which gives me over 10,500) - that's slower than a 1.6GHz P4 and barely faster than a 1GHz P3. In practice it seems to run even slower than indicated by the benchmark, with games like Doom 3 (which achieved 20fps on battery power even on my 8790) running at only 2-3fps and load times taking many times longer than usual. I also noticed that I can't turn off the CPU scaling in the BIOS like I could on my 8790 (understandable considering the number of dead batteries that have resulted from people doing this), but I'd still like to find a way to fix this - as my bleeding edge lappy is running more like a tired old Pentium-II (no exageration) away from the mains

Has anyone else noticed the same with their 9860? Any ideas about how to fix this, maybe a BIOS update or something?
post #2 of 4
In the Nvidia Control Panel change PowerMizer Battery setting to Max Performance. Then run the Benchmarks again. I have mine set to Balanced and have not ran any benchmarks while on battery will be on the Weekend.
post #3 of 4
Thread Starter 
Good thought but I already had the powermizer set to 100% for battery use and the GPU/Memory clock rates were set to 344/684MHz respectively which gives me a stable 18,400 3DMark 2001SE score on mains power.
post #4 of 4
Thread Starter 
We now have an official response on this issue from Sager themselves, posted by Luke here...

http://notebookforums.com/showpost.p...6&postcount=27

So that's the end of it, I'll now stop harping on about this and just enjoy my 9860 for what it CAN do.
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