Sorry to harp on about this but I'm astounded to find that my 3.6GHz 9860 can run as slow as a four year old Celeron 600 when running on battery power. If I run Sisoft Sandra 2005's Arithmetic benchmark on my CPU on mains power I get over 10,500 MIPS, if I unplug the power whithout shutting down while the battery is fully charged and re-run the benchmark I get approximately 4,600 MIPS (a drop of almost 60%!!!) and that's with no apparent CPU/FSB scaling going on (their clock rates remain at 3.6GHz and 800MHz respectively), it doesn't matter what Windows power profile I'm using either. BUT that's not all, if I let the battery run down to 50% and re-run the benchmark again I only get 2,400 MIPS (that's about the same speed as a Celeron 600!!!). This strange phenomenon effects not only the CPU speed but the memory as well, on mains power I get about 4300MB/s as my Integer Memory Bandwidth in Sisoft Sandra, at 50% battery power I get about 800MB/s. So in total my 9860's performance drops by up to 80%!!! when running off batteries - and that's without any CPU/FSB scaling - if I boot up on battery power (enabling the scaling) it degrades my performance by a further 7-8% giving me an almost 90%!!! let me re-iterate, 90% performance DECREASE when running on battery power - that's ludicrous! The difference compared with my old 8790 is enormous - I know the 9860 is a brick but it's still a laptop, I mean it has a battery and it can run for over an hour away from the mains so it's obviously intended for SOME mobile use, so why is it running SOOOO SLOW.
post #1 of 32
12/6/04 at 8:48am