Article:		What Is Preview (and Why You Should Use It)
Subject:		Why so inefficient?
Date:		2005-07-20 09:19:08
From:		LouM
> Trying to change the exposure and saturation of a large photo on a G3 machine only brings up the spinning beach ball of doom, so don't bother. Why is this so inefficient? Can't Photoshop Elements do this easily on a G3? And it seems a waste of time to optimize this only for the G4, when G4 instructions aren't compatible with Rosetta. Presumably Preview and iPhoto will be Intel-native next year.

Showing messages 1 through 1 of 1.

• Why so inefficient?
  2005-08-01 07:32:22  frankie1969 [View]
  
  
  CoreImage doesn't use raw G4 code, it calls Apple's SIMD libraries. Those libs support G4 Altivec and now also x86 SSE instructions.
  
  Altivec beats SSE3 silly in a lot of tasks, but SSE still whomps G3 in turn.
  
  http://developer.apple.com/hardware/ve/summary.html