Antivirus for Windows7 x64

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Best paid AV: NOD32 (x64)
Best free: Avira Antivir

 

I use Avira AntiVir @ work and home and it's very good. Google "Avira vs" and you will find that it's among the best antivurus solutions, and it's free. Although it's only available in 32-bit, it runs fine in x64 OS.

 

My recommendation would be Microsoft Security Essentials or Kaspersky Internet Security.

 

Nod (Paid)
Kaspersky (Paid)
Microsoft Security Essentials (Free)

 

I use Microsoft Security Essentials and am very satisfied with it. MSE recently blocked a trojan, when an infected USB stick was inserted with no infection of the system. I work on Windows 7 x64 and MSE doesn't seem to slow down anything. When I use Spybot for an additional check, it only finds some cookies, not more. For a free AV solution MSE does an excellent job.

 

I also use Microsoft Security Essentials both 32 and 64bit.

 

I use to be die hard Avira guy. I did at least 10 hours of research on best AV last year and Avira was tops.

However, I've been using MSE for past several months and I like it better. The issue with Avira is that there are many false positives which is quite annoying.

 

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I prefer ESET NOD32, because it's reliable and doesn't slow down my computer