Linked by Thom Holwerda on Fri 29th Dec 2006 21:18 UTC, submitted by Michael Larabel
Ubuntu, Kubuntu, Xubuntu "While 64-bit support is now considered common for both Intel and AMD processors, many Linux (as well as Windows) users are uncertain whether to use a 32-bit or 64-bit operating system with there being advantages for both paths. With this being the last Phoronix article for 2006, we decided to take this opportunity to look at the common question of whether to use 32-bit or 64-bit software. In this article, we will be comparing the i386 and x86_64 performance with Ubuntu 6.10 Edgy Eft and Ubuntu 7.04 Feisty Fawn Herd 1 to see how the numbers truly stack up."
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RE: Performance Tradeoffs
by Tim Locke on Fri 29th Dec 2006 23:51 UTC
Tim Locke
Member since:

"1. Words become twice as large. When you have to swap registers around, you have to move twice as much data. This makes the system slow down."

The words are twice as wide but so are the data paths.

Net result is no difference.

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