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Old April 23, 2010, 04:04 PM
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Join Date: Feb 2010
Location: Downtown Toronto
Posts: 161

I run 2gb on all my machines, had 4gb in there but never even got close to using 4gb. I don't game though, pretty much just websurfing and excel.
New on HWC but lots of feedback on RFD (89-0-0)

XBMC Rig (1900PPD): AMD Athlon II X2 240 @ 3.2ghz | Gigabyte GA-MA78LM-S2H | G.Skill 2GB DDR2 800 | WD Caviar Blue 500GB | Antec NSK1300 SFF Case
Folding Rig: (1700+4500PPD) Intel Core 2 Duo E6600 | Gigabyte GA-P35-DS3L | OCZ Special Ops 2GB DDR2 800 | EVGA 9800GT | G.Skill Falcon 64GB SSD | Samsung Spinpoint 1TB | Seagate Momentus 1TB | Generic ATX 430W Case
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  #52 (permalink)  
Old August 24, 2010, 06:47 PM
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Join Date: Aug 2010
Posts: 1
Default RAM Limits

OK, quoting Bissa "
can the 32 bit version of windows 7 handle 8GB of ram?
The only true limit to how much RAM you can access is the address width for your processor. New processors have an address width of 64 bits. Older ones (but not OLD old) have 32 bit width.
The formula for how much RAM the processor can access is 2 to the power of how many bits wide the processor is.
Therefore, a 32 bit processor has a 2^32 = a 4,294,967,296-byte RAM limit = a 4 GB RAM limit. It can't access anymore.
A 64 bit processor has a 2^64 = an 18,446,744,073,709,551,616-byte RAM limit approx. = an about 18.4 EB (exabytes) RAM limit. Aka about 18.4 billion GB RAM limit.
Notice that the old 16 bit processors could only hold about 65 kilos (2^16 = 65,536 bytes).
The ancient (1970s) 8-bit processors could only utilize a mere 256 bytes of RAM.
If 128 bit processors are made, they will have a 2^128 bit RAM limit. That's a 340,282,366,920,938,463,463,374,607,431,768,211,45 6-byte RAM limit. Semi-Translation: about 340 quadrillion exabytes. "More" Understandable Translation: about 340 septillion GB. Translation: More than you can fathom. BTW, that whole thing is starts out as "340 undecillion, 282 decillion, 366 nonillion, 920 octillion, [etc]."

Anyways, any other limit is purely artificial. In this case, the RAM limit is purely software, and can be taken off via software manipulation, aka, a hack. Goolge "use over 4GB of Ram on Win 7 32 bit hack". That might bring you here: "(www).raymond.cc/blog/archives/2009/08/19/make-windows-7-and-vista-32-bit-x86-support-more-than-4gb-memory/"
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