said by Reboot123:9gb for yesterday upload n download together, I do not leave my pc running when I am not using it, i have yet to test if counter goes up when not online. As for the virus/trojan/spyware doubt it because I do weekly scans (avg, malwarebytes, etc and did not notice any program running in background that could be like constantly updating itself or something, will have to double check).
Sorry for the typo, I meant to ask if it was up OR down... 9GB up is very different than 9GB down... To answer your original question, I find TekSavvy's counter pretty accurate. My router monitors bandwidth and the reports are always 2-7% above that (router stats don't include overhead).
