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Windows 7: 32 bit vs 64 bit Comparison

25 May 2010   #21
jerrypc1

64 bit windows 7 home premium
 
 

Thanks lordbob I have 64 bit but I didn't know what the differences were until now. Jerry


My System SpecsSystem Spec
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25 May 2010   #22
Lordbob75

Windows 7 Ultimate x64, Mint 9
 
 

Quote   Quote: Originally Posted by iphone View Post
I dont think 64bit requires atleast 2GB ram as i ran 64bit Windows 7 on a laptop with 1GB
It will run, but the minimum requirement is listed as 2Gb RAM.
Source: Windows 7 system requirements - Microsoft Windows

Quote   Quote: Originally Posted by Lomai View Post
Thanks Lordbob
You're welcome.
Quote   Quote: Originally Posted by jerrypc1 View Post
Thanks lordbob I have 64 bit but I didn't know what the differences were until now. Jerry
No problem. The guide needed to be written. No idea why it hadn't been yet...

~Lordbob
My System SpecsSystem Spec
25 May 2010   #23
iphone

Windows 7 32bit, Snow leopard
 
 

Quote   Quote: Originally Posted by Lordbob75 View Post
Quote   Quote: Originally Posted by iphone View Post
I dont think 64bit requires atleast 2GB ram as i ran 64bit Windows 7 on a laptop with 1GB
It will run, but the minimum requirement is listed as 2Gb RAM.
Source: Windows 7 system requirements - Microsoft Windows
Oh! thanks for clearing that
My System SpecsSystem Spec
.

26 May 2010   #24
Lordbob75

Windows 7 Ultimate x64, Mint 9
 
 

Quote   Quote: Originally Posted by iphone View Post
Quote   Quote: Originally Posted by Lordbob75 View Post
Quote   Quote: Originally Posted by iphone View Post
I dont think 64bit requires atleast 2GB ram as i ran 64bit Windows 7 on a laptop with 1GB
It will run, but the minimum requirement is listed as 2Gb RAM.
Source: Windows 7 system requirements - Microsoft Windows
Oh! thanks for clearing that
Welcome.

~Lordbob
My System SpecsSystem Spec
26 May 2010   #25
luckylukevn

Windows XP, Windows 7 Ultimate, Ubutun 10.04
 
 

does 64bit OS mean it cannot be infected by virus because virus is 32 bit ?
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26 May 2010   #26
kucing13

 

Quote   Quote: Originally Posted by luckylukevn View Post
does 64bit OS mean it cannot be infected by virus because virus is 32 bit ?
I don't think so. And mind telling me how do you know certain virus 32 or 64. Just Asking . Thanks
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26 May 2010   #27
zzz2496

Windows7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by luckylukevn View Post
does 64bit OS mean it cannot be infected by virus because virus is 32 bit ?
That depends on the virus, if the virus is compiled directly to a binary format that is not compatible with WoW, it won't infect Win64. If it does compatible, and can link to a 64bit compiled library, it can infect Win64.

If the virus is created by an intermediary language (.net/java), if the perquisite requirement is there, it can infect Win64.

Then again, there's a lot going on in the "infecting" stage, we can't really know for sure until we looked at the memory stack in action...

zzz2496
My System SpecsSystem Spec
26 May 2010   #28
luckylukevn

Windows XP, Windows 7 Ultimate, Ubutun 10.04
 
 

Quote   Quote: Originally Posted by zzz2496 View Post
Quote   Quote: Originally Posted by luckylukevn View Post
does 64bit OS mean it cannot be infected by virus because virus is 32 bit ?
That depends on the virus, if the virus is compiled directly to a binary format that is not compatible with WoW, it won't infect Win64. If it does compatible, and can link to a 64bit compiled library, it can infect Win64.

If the virus is created by an intermediary language (.net/java), if the perquisite requirement is there, it can infect Win64.

Then again, there's a lot going on in the "infecting" stage, we can't really know for sure until we looked at the memory stack in action...

zzz2496
Thanks!
My System SpecsSystem Spec
27 May 2010   #29
Lordbob75

Windows 7 Ultimate x64, Mint 9
 
 

Quote   Quote: Originally Posted by luckylukevn View Post
does 64bit OS mean it cannot be infected by virus because virus is 32 bit ?
Interesting question actually. Not something I ever thought about before.

In general, I would expect hackers to write universal code as much as possible.

~Lordbob
My System SpecsSystem Spec
27 May 2010   #30
zzz2496

Windows7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by Lordbob75 View Post
Quote   Quote: Originally Posted by luckylukevn View Post
does 64bit OS mean it cannot be infected by virus because virus is 32 bit ?
Interesting question actually. Not something I ever thought about before.

In general, I would expect hackers to write universal code as much as possible.

~Lordbob
There is a "universal" code, that is by using intermediary runtime, like .net/java. But the downside of that road is the program will rely on that intermediary runtime, and the intermediary runtime MUST HAVE ACCESS to the core OS's functions to do it's harm.

An alternative would be to modify the kernel and segment the binaries, making one binary contains 2 completely different datastreams. This method was used by Apple's Mac OS X in the transition between PPC and x86, one binary package contains two datastreams, one for PPC, another for x86.

The last alternative, this will need you to modify the kernel and set the flag in the binary manually so that when it runs, it will invoke the processor's x86 legacy mode, and run it accordingly, but this has many downsides, too complex to explain...

zzz2496
My System SpecsSystem Spec
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