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To: Ali Chen who wrote (72777)	2/28/2002 7:41:31 PM
From: Gopher Broke	Read Replies (1) \| Respond to of 275872

If there are no specific BIOS switch to enable/disable hyperthreading explicitly, this is really a matter of 1 versus 4, so your concerns are valid Even if there was a specific BIOS switch to disable hyperthreading the concerns would be valid because we have no idea how much "hyperthreading" was enabled in the old core. Just because the actual thread switching part was disabled does not mean that there were no hyperthreading-related optimisations that were enabled in the Northwood core. These could be disabled when you disable "hyperthreading", resulting in a non-HT Prestonia performing worse than a Northwood.

To: Ali Chen who wrote (72777)	2/28/2002 8:00:17 PM
From: milan0	Read Replies (2) \| Respond to of 275872

Ali re:"Therefore the comparisons in the article are not valid, accurately speaking anyway. If there are no specific BIOS switch to enable/disable hyperthreading explicitly, this is really a matter of 1 versus 4, so your concerns are valid. " I scanned the BIOS chapter for any hyperthreading setting and didn't see one. Also I did a search on all the file with the keyword 'hyper' and no occurrence was found... ""concerning electron migration" Honestly, I know very little about electromigration, so it is unlikely that I contributed anything to clarify the subject. But it could be something else, so I thank you anyway ;-) ;-) ;-)" I couldn't remember the exact word that you used, so it wasn't easy to search for it. Since you could not figure what I was referring to, I had to dig it up! Here it is: post # 64010: "All: looks like the new Intel 0.13 process has some problems: excessive leakage! p.25 of Datasheet for P-III says, Table 7, ftp://download.intel.com/design/PentiumIII/datashts/24965702.pdf " Myke