[BALU] 64 bit systems

Jim Vines jgoodguy at charter.net
Fri Jun 8 11:37:08 CDT 2007


Sorry that should be bits and not bytes. 

So that is 32 thousand 1 gig simms for the 48 bit.
2 billion 1 gig sims for the 64 bit. 

Jim

Jim Vines wrote:
> two hundred fifty six thousand gigabytes for the 48 bit.
>
> I think, sixteen gigas of gigabytes for the 64 bit.
>
> A gig is 10 to the 9th and 64 bit address space can handle 10 to the 
> 18th.
>
> Jim
>
> Mr. Panzer wrote:
>> ok so how much ram we talking about?
>>
>>
>> Panzer
>>
>>
>>
>> 10 second quickie not long enough for you? Try it for 24 hours. 24 
>> Heures du Mans
>>
>>
>>
>>
>>
>>> From: Thomas Stover <thomas at wsinnovations.com>
>>> Reply-To: members at lists.bham-lug.org
>>> To: members at lists.bham-lug.org
>>> Subject: Re: [BALU] 64 bit systems
>>> Date: Fri, 08 Jun 2007 10:49:46 -0500
>>>
>>> The physical address space is 48 bits, so that limits the amount of 
>>> real ram in the system. However from a process's point of view the 
>>> "virtual" address space is 64 bits, and that could still be utilized 
>>> with file mapping and /or NUMA machines.
>>>
>>> jim wrote:
>>>
>>>> Is not the address space only 48 bits, 256 terabytes
>>>> <http://en.wikipedia.org/wiki/Tebibyte>. (I am looking foward to
>>>> buying 1 terabyte[1000 gigabytes] surplus memory). and the actual 
>>>> Ram only 40 bit addressing or just 1 terabyte of RA.
>>>>
>>>> But the registers and data width are 64 bits are they not.
>>>>
>>>> I think the 40 and 48 restrictions are only for memory ops.
>>>>
>>>
>>>
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