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I have an AHTEC Sense XHLB2 (a relabeled version of the Compal HLB2) that has a VGA ATI Radeon HD 4650.
When I switch off the power plug and run into battery mode the perfomance of the laptop is severely affected. After running some benchmarks I found that the VGA results are something between 35% and 200% slower.
How can I avoid the change of the VGA performance even If this makes my battery life shorter?
EDIT: Changed typo from 6450 to 4650.
Without benchmarks, you can check with GPU-Z (http://www.techpowerup.com/gpuz/) also, which will show you the actual reason, which is that frequencies of gpu and its memory are decreased in battery mode.
– Gnoupi – 2010-01-17T11:02:49.53316450? Have I missed a generation? Last time I checked we were still in the 5000 family. – alex – 2010-01-17T11:23:25.620
@alex - I'm guessing he meant 4650, he should probably edit it to the correct version. However I don't think this changes the performance problem. – Gnoupi – 2010-01-17T11:52:25.817