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#16
March 17th 10, 05:18 AM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 15-03-2010 23:15, philo wrote:
WOW I definitely need a 32 cpu machine with 128 gigs of ram I might be able to finally have a good score in Tetris (the win3x version of course)  Sorry, but they didn't make a 32bit only cpu with 128GB support  
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#17
March 17th 10, 05:18 AM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 15-03-2010 23:15, philo wrote:
WOW I definitely need a 32 cpu machine with 128 gigs of ram I might be able to finally have a good score in Tetris (the win3x version of course) Sorry, but they didn't make a 32bit only cpu with 128GB support
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#18
March 17th 10, 06:48 AM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 17-03-2010 13:04, Bob I wrote:
he said 32 CPU machine, not 32 bit. BIG difference He said: "32 cpu machine". It was just a small comment to his little joke. Anyways, AMD and Intel 32bit only CPUs support 64GB. Their 64bit CPUs support way more than that in PAE mode... Why Win2003 supports 128GB
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#19
March 17th 10, 06:48 AM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 17-03-2010 13:04, Bob I wrote:
he said 32 CPU machine, not 32 bit. BIG difference He said: "32 cpu machine". It was just a small comment to his little joke. Anyways, AMD and Intel 32bit only CPUs support 64GB. Their 64bit CPUs support way more than that in PAE mode... Why Win2003 supports 128GB
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#20
March 17th 10, 12:04 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
dennis wrote: On 15-03-2010 23:15, philo wrote: WOW I definitely need a 32 cpu machine with 128 gigs of ram I might be able to finally have a good score in Tetris (the win3x version of course) Sorry, but they didn't make a 32bit only cpu with 128GB support he said 32 CPU machine, not 32 bit. BIG difference
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#21
March 17th 10, 12:04 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
dennis wrote: On 15-03-2010 23:15, philo wrote: WOW I definitely need a 32 cpu machine with 128 gigs of ram I might be able to finally have a good score in Tetris (the win3x version of course) Sorry, but they didn't make a 32bit only cpu with 128GB support he said 32 CPU machine, not 32 bit. BIG difference
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#22
March 17th 10, 03:00 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
dennis wrote:
On 17-03-2010 13:04, Bob I wrote: he said 32 CPU machine, not 32 bit. BIG difference He said: "32 cpu machine". It was just a small comment to his little joke. Anyways, AMD and Intel 32bit only CPUs support 64GB. Their 64bit CPUs support way more than that in PAE mode... Why Win2003 supports 128GB PAE is 36-bit wide and 2^36=64GB, but Server 2003 can use NUMA so processors can use different memory banks allowing the operating system to use a combined memory access up to 128GB. With SMP the operating system can only access a maximum of 64GB. John
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#23
March 17th 10, 03:00 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
dennis wrote:
On 17-03-2010 13:04, Bob I wrote: he said 32 CPU machine, not 32 bit. BIG difference He said: "32 cpu machine". It was just a small comment to his little joke. Anyways, AMD and Intel 32bit only CPUs support 64GB. Their 64bit CPUs support way more than that in PAE mode... Why Win2003 supports 128GB PAE is 36-bit wide and 2^36=64GB, but Server 2003 can use NUMA so processors can use different memory banks allowing the operating system to use a combined memory access up to 128GB. With SMP the operating system can only access a maximum of 64GB. John
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#24
March 17th 10, 04:52 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 17-03-2010 16:00, John John - MVP wrote:
PAE is 36-bit wide and 2^36=64GB PAE is actually implementation specific. In 64bit processors you can address the entire physical bus through PAE (the PTE structure is the same as in 64bit mode).
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#25
March 17th 10, 04:52 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 17-03-2010 16:00, John John - MVP wrote:
PAE is 36-bit wide and 2^36=64GB PAE is actually implementation specific. In 64bit processors you can address the entire physical bus through PAE (the PTE structure is the same as in 64bit mode).
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#26
March 17th 10, 06:04 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
dennis wrote:
On 17-03-2010 16:00, John John - MVP wrote: PAE is 36-bit wide and 2^36=64GB PAE is actually implementation specific. In 64bit processors you can address the entire physical bus through PAE (the PTE structure is the same as in 64bit mode). But /PAE is only available on 32-bit operating systems and when installed on 64-bit machines the processor operates in legacy mode to suit the 32-bit operating system. I'm not sure if the processor makes all the processor width available while in legacy mode? And being that PAE is now a rather old story I have to wonder if Microsoft ever designed PAE to access more than 64GB of RAM. Microsoft says that PAE allows it's operating systems to use a maximum of 64GB of RAM so I don't know how else (other than NUMA) Server 2003 x86 would be capable of using 128GB. Interesting to note that Server 2003 is the only one capable of using this much RAM, Server 2008 x86 can only use 64GB... but then Microsoft decide a while back that Server 2008 was the end of the line for 32-bit server systems. John
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#27
March 17th 10, 06:04 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
dennis wrote: On 17-03-2010 16:00, John John - MVP wrote: PAE is 36-bit wide and 2^36=64GB PAE is actually implementation specific. In 64bit processors you can address the entire physical bus through PAE (the PTE structure is the same as in 64bit mode). But /PAE is only available on 32-bit operating systems and when installed on 64-bit machines the processor operates in legacy mode to suit the 32-bit operating system. I'm not sure if the processor makes all the processor width available while in legacy mode? And being that PAE is now a rather old story I have to wonder if Microsoft ever designed PAE to access more than 64GB of RAM. Microsoft says that PAE allows it's operating systems to use a maximum of 64GB of RAM so I don't know how else (other than NUMA) Server 2003 x86 would be capable of using 128GB. Interesting to note that Server 2003 is the only one capable of using this much RAM, Server 2008 x86 can only use 64GB... but then Microsoft decide a while back that Server 2008 was the end of the line for 32-bit server systems. John
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#28
March 17th 10, 06:10 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 17-03-2010 19:04, John John - MVP wrote:
But /PAE is only available on 32-bit operating systems and when installed on 64-bit machines the processor operates in legacy mode to suit the 32-bit operating system. I'm not sure if the processor makes all the processor width available while in legacy mode? And being that PAE is now a rather old story I have to wonder if Microsoft ever designed PAE to access more than 64GB of RAM. 64bit processors are also 32bit processors. There are different addressing modes. PAE is one of them - used by 32bit OSes. 64bit/long mode is another - which is used by 64bit OSes.
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#29
March 17th 10, 06:10 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 17-03-2010 19:04, John John - MVP wrote: But /PAE is only available on 32-bit operating systems and when installed on 64-bit machines the processor operates in legacy mode to suit the 32-bit operating system. I'm not sure if the processor makes all the processor width available while in legacy mode? And being that PAE is now a rather old story I have to wonder if Microsoft ever designed PAE to access more than 64GB of RAM. 64bit processors are also 32bit processors. There are different addressing modes. PAE is one of them - used by 32bit OSes. 64bit/long mode is another - which is used by 64bit OSes.
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#30
March 17th 10, 06:12 PM
posted to microsoft.public.windowsxp.hardware
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Getting Compaq to Boot With 4 Gig Memory
On 17-03-2010 19:04, John John - MVP wrote: PAE is now a rather old story I have to wonder if Microsoft ever designed PAE to access more than 64GB of RAM. There isn't really much to change. The PTE has always been 64 bit wide. It is just a question of how many of the bits a specific CPU allows to use for addressing memory.
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