Windows Defender performance impact

ameoba

Supreme [H]ardness
Joined
Jan 9, 2001
Messages
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How much of a performance hit do you take by having Windows Defender's real-time protection enabled? Is it a low impact service or a system-raping scan (a'la Norton)?
 
Low impact but it can take up to 25MB of ram or so.

Defender is an alright program but just disabling the dynamic portion and leaving nightly scans will save you a good amount of memory. We just had a mass malware outbreak at work and Defender missed it horribly. The last thing it detected for us was our remote management software, wiping that off. It's really designed just to protect Windows components, nothing else.

*edit* I would like to add it really depends on your OS. With XP and Vista it takes a lot of memory. In Windows 7 it seems to only be taking 3MB, which is a significant improvement.
 
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