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I'm fairly new to mining bitcoin, but I have read that using GPU can help improve performance. I currently am using GUIMiner (latest version) running on an OpenCL back-end but when I choose to use my graphics card I get less than I would without it. I also use Slush's pool, if that could have any relation?
PC Specs: Acer Aspire 5560 AMD a6-3420M APU with Radeon HD @ 1.50 GHZ 4GB Ram, is a laptop
Also can overclocking my pc improve performance?
Thank you, - bitcoin n00b