I have a new PC with 64bit Vista Ultimate and 8gig RAM which I was hoping would speed up HD digital video editing, but my software application will not run under Vista, so I'm thinking use Virtual PC.
The problem, I only have 32bit XP pro, but if That is installed as a virtual set-up on the 64bit Vista Host, will it then be able to take advantage of the 8gig of RAM or will it still max out at just under 4gig?
> I have a new PC with 64bit Vista Ultimate and 8gig RAM which I was hoping > would speed up HD digital video editing, but my software application will > not run under Vista, so I'm thinking use Virtual PC.
> The problem, I only have 32bit XP pro, but if That is installed as a > virtual set-up on the 64bit Vista Host, will it then be able to take > advantage of the 8gig of RAM or will it still max out at just under 4gig?
The key to this, as with 99% of Virtual PC questions is to consider what would happen on a physical machine. As far as software (both OS and applications) is concerned, there is no difference between a physical machine and a virtual machine - in fact, the vast majority of software has not the slightest idea that it's running on a virtual machine as opposed to a physical machine.
So...
If you had a physical machine with 8GB RAM and installed 32-bit Windows XP on it, would it be able to see all of the RAM? No, it would see just under 4GB of it, depending on the motherboard.
Similarly, if you created a virtual machine and assigned it more than 4GB of your host's 8GB RAM, would 32-bit Windows XP be able to see all of it? No it wouldn't, as above.
This is not a limitation or problem with Virtual PC - it is simply that 4GB is the maximum amount of RAM which a 32-bit operating system can address.
<castc...@ntlworld.com> wrote: >I have a new PC with 64bit Vista Ultimate and 8gig RAM which I was hoping >would speed up HD digital video editing, but my software application will >not run under Vista, so I'm thinking use Virtual PC.
>The problem, I only have 32bit XP pro, but if That is installed as a virtual >set-up on the 64bit Vista Host, will it then be able to take advantage of >the 8gig of RAM or will it still max out at just under 4gig?
Even if you hade access to XP-ProX64 it would not help since VPC2007 guests are 32 bit PC:s and so can only install 32 bit Operating systems. So your 8Gb memory will not be usable for a guest, only about 3 Gb.
There is another problem too: Since you talk about video editing I suspect that you will not find the emulated video card available in a virtual machine useful for your purposes. It is a Trio 64 card with only limited amounts of memory (4-8 Mb if my memory serves me right) and it cannot handle DirectX 9 or higher...
>I have a new PC with 64bit Vista Ultimate and 8gig RAM which I was hoping >would speed up HD digital video editing, but my software application will >not run under Vista, so I'm thinking use Virtual PC.
> The problem, I only have 32bit XP pro, but if That is installed as a > virtual set-up on the 64bit Vista Host, will it then be able to take > advantage of the 8gig of RAM or will it still max out at just under 4gig?
> -- > Ron
The maximum you can allocate to a VPC guest is 3.712 GB. It is set in VPC itself.
Ron O'Brien wrote: > I have a new PC with 64bit Vista Ultimate and 8gig RAM which I was > hoping would speed up HD digital video editing, but my software > application will not run under Vista, so I'm thinking use Virtual PC.
> The problem, I only have 32bit XP pro, but if That is installed as a > virtual set-up on the 64bit Vista Host, will it then be able to take > advantage of the 8gig of RAM or will it still max out at just under 4gig?
Ron:
Would you consider getting hold of a copy a XP x64 and multi-booting your machine?
If you want to multi-boot, I highly recommend BootIt NG (BING) from terabyteunlimited.com.
> Would you consider getting hold of a copy a XP x64 and multi-booting your > machine?
> If you want to multi-boot, I highly recommend BootIt NG (BING) from > terabyteunlimited.com.
> -- > David Wilkinson > Visual C++ MVP
Looks like that's my only option, though I must consider how much the 64bit XP is going to cost me - shame they didn't do 32 & 64 bit on the same disk like they have with Vista!
>> Would you consider getting hold of a copy a XP x64 and multi-booting your >> machine?
>> If you want to multi-boot, I highly recommend BootIt NG (BING) from >> terabyteunlimited.com.
>> -- >> David Wilkinson >> Visual C++ MVP
> Looks like that's my only option, though I must consider how much the > 64bit XP is going to cost me - shame they didn't do 32 & 64 bit on the > same disk like they have with Vista!
Where did you see both 32 and 64 bit Vista on the same disk? Most retail versions are 32 bit only. Ultimate has 32 and 64 bit, but on two disks in one container.
> Where did you see both 32 and 64 bit Vista on the same disk? Most retail > versions are 32 bit only. Ultimate has 32 and 64 bit, but on two disks in > one container.
