Intel Corporation (INTC) Message Board

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Technology Stocks : Intel Corporation (INTC)

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To: pgerassi who wrote (134793)	5/13/2001 12:58:03 PM
From: muzosi	Read Replies (2) of 186894

2^32 bits is only 512MB i think for small values of 2 this could be true, but as long as there is no lorenz contraction 2^32 is 4G. NT and linux support files larger than 4T (64 bit offsets). This has nothing to do with how much of such a file can be read into the physical memory. Also most new x86 chips have more than 32 bit address pins so even > 2^32 address space is possible externally even though internal address registers are 32 bit only. But one can use different segments to point to different regions. All x86 CPUs with x87 FPUs can handle 64 bit integers all DPFP's can do this but it is irrelevant especially for x86 where FP register file access sucks. The overhead of getting bits from FP register file to integer registers kills any potential advantage. you seem to be a little bit confused about these details.

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