Samo jedna mala usporedba... npr:
Avira
Processor: Pentium 4 or later, 1GHz minimum
Memory: Min. 1024 MB RAM
Hard Disk: 800 MB free disk space (additional temporary and quarantine space needed)
Panda
Processor: Pentium 300 MHz or faster
Memory: Min. 256 MB
Hard Disk: 240 MB free disk space