Windows7 HP X64
4GB RAM
Athlon 240x processor
IObit Smart RAM set to Auto free RAM when system is idle and Do Not free during high CPU and Disk usage
AIS 5.1.889 with a license
All real time shields working normally
Just ran a Quick Scan and followed the CPU and Memory usage on AvastSvc.exe during the scan. It took 6:47 to scan 17.6GB, 128,000 files in 20,000 folders and no infected files found.
Most of the time during the scan the CPU usage for AvastSvc.exe was in the 40% to 50% range going as low as 5% and as high as 75% but both of those extreme numbers only happened a couple of times and only for a few seconds.
Most of the time the Memory usage was at around 34,000K which is about 1K higher then when the orange ball is not rotating. On a couple of occasions for a a few seconds at the most Memory usage got up to 150,000K - 175,000K but then went right back down to the 34,000K number
No noticeable change in available physical memory from before the scan and after the scan.