Dunno about anyone else, but my system was built (last year, by me) with hard-core gaming as the primary consideration, where too much RAM is sometimes a contradiction.
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10 gigs of ram.
- Thread starter john turner
- Start date
my 10 gig computer is a mac pro that forms the heart of my studio. i routinely record 20+ tracks of 24 bit/96 khz audio. as such, the ram is quite beneficial, although probably not completely necessary. 
the reason for the memory limitation is that a 32 bit architecture can only recognize 4 gigs of unique memory addresses (2^32 different unique addresses). the system cannot access memory it cannot uniquely identify. the top portion of the memory is used for accessing video ram, and whatever is left over is available for the system ram. depending on how much video ram you have, your system ram will vary - if you only have 256 meg of video ram mapped, you will have 3.75 gig of system ram.
as far as what a program is written for, most memory-intensive programs worth a spit will use the video drivers to govern video memory resources as well as whatever runtime resources/environment they operate in to manage system ram, and therefore if the 64 bit driver or runtime is written with "legacy code support" in mind, it should have no problem mapping the program's output wherever it needs to, even above that 4 gig barrier.
this is where you get incompatibility between older software and 64 bit os'es, though. their runtime environments and drivers are either not well written or have not been updated to allow for system-control of resource allocation. programs might be written around now-discontinued driver or runtime functionality, but this is a sign of poor coding design in general, and not just a benchmark of 32 bit code. of course, it also depends on the program. if its old it might have its runtime integrated into its executable, so that it cannot be updated to support 64 bit environments.
I've been told that there is a workaround that will allow 32-bit systems to see more than 3.25 gigs but how/where/what to do I'm not sure of - I think it involves a reg edit.
Untrue. It's an OS kernel issue. No registry edit on the planet can change that. See John's statement above.
he's talking about pae, physical address extension. -that's- going to mess with a lot of drivers, moreso even than 64 bit OSes, since enabling it totally changes how physical memory is accessed by the os. in a nutshell it halves the number of potential memory locations in the 32 bit memory page table and doubles their address size. an extra handler has to be added to handle this, which affects performance adversely.
note, this also does not open up as many memory address locations as a true 64 bit OS could handle (which is 2^52 iirc, since the highst 12 bits of the address are used for flags and os stuff). especially on windows, where there are constraints placed even on pae due to driver compatibility and licensing concerns.
note, this also does not open up as many memory address locations as a true 64 bit OS could handle (which is 2^52 iirc, since the highst 12 bits of the address are used for flags and os stuff). especially on windows, where there are constraints placed even on pae due to driver compatibility and licensing concerns.
here's more info on this, if you're interested :
http://technet.microsoft.com/en-us/library/cc728455(WS.10).aspx
http://technet.microsoft.com/en-us/library/cc783646(WS.10).aspx#w2k3tr_pae_tools_beys
definitely something i wouldn't mess with on my windows laptop, and i'm pretty comfortable tweaking stuff.
10 gigs, pfffft. The laptop I'm typing this from is the management station of over 3/4 of PetaByte of data storage. Every single bit of contenet that has been generated by the Associated Press, over the last 200 years, is housed on my data strorage equipment. I think I just out geeked you John 
10 gigs, pfffft. The laptop I'm typing this from is the management station of over 3/4 of PetaByte of data storage. Every single bit of contenet that has been generated by the Associated Press, over the last 200 years, is housed on my data strorage equipment. I think I just out geeked you John
dude. the entire ap database? can you give me access?
i'm a history buff, i'd love to check that out.
10 gigs, pfffft. The laptop I'm typing this from is the management station of over 3/4 of PetaByte of data storage. Every single bit of contenet that has been generated by the Associated Press, over the last 200 years, is housed on my data strorage equipment. I think I just out geeked you John
How many zeros in a petabyte?
A petabyte is 1,000 terabytes. I just soiled myself!!!10 gigs, pfffft. The laptop I'm typing this from is the management station of over 3/4 of PetaByte of data storage. Every single bit of contenet that has been generated by the Associated Press, over the last 200 years, is housed on my data strorage equipment. I think I just out geeked you John
dude. the entire ap database? can you give me access?
i'm a history buff, i'd love to check that out.
most of it is available from our website, AP.org
go see what you can find.
A petabyte is 1,000 terabytes. I just soiled myself!!!
Yep, and I'm the only one here who can do what I do. I truely am the King of my own domain
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