Brendan Gillatt wrote:
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> On 11/05/2010 21:26, Michael Watterson wrote:
>   
>> you must have extremely large photos and very poor applications. I do 
>> use a 1G RAM Desktop PC for most video edit now, but even with 512M my 
>> laptop is fine. I've never run out of RAM editing photos in last 10 years.
>>
>> Some applications need 64bit. Video Editing and photo editing certainly 
>> don't.
>>     
>
> I disagree: lets say we have a 15 MPixel camera (15e6 pixels) * by 4
> bytes per pixel * 3 layers. That leaves a memory footprint of 180 MiB.
> With 2GB of RAM--and ignoring the fairly significant amount of RAM used
> by anything other than pixels--we can only open 11 images at a time. I
> don't know about you but I work on 20+ images at a time fairly often.
>   
That's about available system RAM, not  64 bit apps.   Most  consumer  
PCs/Laptops will only address 3G with a 64CPU

x86 32Bit CPU can address 4G easily and more. You hypothetically could 
have a 32bit CPU more efficient than x64 intel/AMD that address 256Gbyte

BTW
How do you see 20+ images that are 15M pixel each at once?
Thumbnails?

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