celeron tualatin with data-prefetch logic?

[ensabah6]

hi,
does the celeron tualatins have data-prefetch logic enabled? originally i heard they have it present and it is enabled, but due to the low bus bandwidth of 100mhz/800mb/s it does not function well, but if overclocked, the data prefetch logic works and in addition to the overclock boost, there is the boost from data-prefetch logic.

however, several reviewers claim that this logic is, in fact, disabled.

http://www.digit-life.com/articles/celeron1200mhz/

The Celeron is meant for a value market because of a low FSB frequency and a disabled Data Prefetch Logic.

www.xbitlabs.com/articles/cpu/display/celeron-1200.html -
.. the efficiency of the Data Prefetch Logic a

www.realworldtech.com/ page.cfm?ArticleID=RWT061202231808 -

the problem i have with realworld is that the author did not overclock to 133mhz, where maybe the prefetch logic might kick in.

anyone know for sure?

 

[Foxie3a]

Overclocking won't enable it. Atleast I dont think so...

 

[NookieN]

According to sandpile.org, which usually has reliable information, the Celeron does not have prefetch enabled unless it is a mobile Celeron. Raising the bus speed will not enable the feature.

 

[ensabah6]

Overclocking won't enable it. Atleast I dont think so...

i remember reading in tomshardware or anandtech that the data prefetch requires high bandwidth, and that the celeron's 100mhz 800mb/s bandwidth is so low, that the data prefetch has a neglible impact on performance, while increasing the bandwidth increases performance of the data prefetch.

un otherwords, at 800mb/s it is so low that it would appear the data prefetch is disabled, but by overclocking to 133mhz/1gb/s, the data prefetch utilizes the extra headroom.