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Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: Joe NYC who wrote (62285)	11/5/2001 4:00:49 PM
From: fyodor_	Respond to of 275872

Joe: Does SSE-2 deliver any increase in performance over SSE for single precision operation? If it does, you may be right. FWIW, I would tend to agree with Wanna on this: SSE2 is basically just a superset of SSE. As opposed to something like MMX, SSE and SSE-2 use the same registers and the same execution units. However, there is no increase in single precision fp with SSE-2 over SSE. Look at SSE-2 as a dp fp and integer extension to SSE. (Note: I'm not quite sure about Intel's choice of nomenclature on this issue, but I believe SSE-2 is used to describe SSE + the new instructions - and not just the new instructions - similar to AMD's 3DNow! Professional). -fyo