>but how about P4E Prescott 2.8 800Mhz is that a good CPU or
>is the Northwood 2.8 better?
Overall Northwood is typically slightly faster, or equal, though the difference is small and can vary more widely depending on the app. Biggest difference/concern is that Prescott is very hot, which is the main reason to avoid it; its performance isnt all that bad, it typically just aint better than NW (per clock) either.
> If I decide to buy an AMP 2600+ it will cost me the same
>as if i bought AXP 3000+ Barton, is it worth to take the
>AMP instead?
Definately not. Athlon MP only makes sense for dual cpu systems. Its the exact same chip, with a slower FSB (higher clockfrequency for the same PR rating). the only real difference is that its validated for 2 way operation, and the AXP is not, and that its a lot more expensive. For a single CPU system, it makes no sense (unless you'd have an old 266 Mhz motherboard and want to max it out, but even then...)
>And can i use it on a Socket A Motherboard?
Yep, pretty much any socket A board should work with the MP's, but like I said, there is very little reason to do so.
>Is the diffrence bettwen Barton and Thoroughbread much?
Not really, depending how you look at it. Barton has twice the cache, but that is taken into account in its PR rating. So for equal PR rating, Barton clocks slower. So per clock Barton is better, per PR (and therefore, per $), it depends on the apps. Some apps love the extra cache, some just want clockfrequency, so depending what app you look at, a 2500+ (barton) could faster or slower than a 2600+ (tbred). Overall, the PR rating is pretty much accurate within the AXP range, but rendering mught benefit more from clock than cache, so maybe a tbred might be better for you. OTOH barton would probably overclock better, especially the 2500+. Either way, both the 2600+ tbred and 2500+ barton are dirt cheap and offer tons of performance for the $; you really can't go wrong either way. If you intend to overclock, I'd go for the 2500+, if you don't, I'd guess a 2600+ tbred would be a better bet.
= The views stated herein are my personal views, and not necessarily the views of my wife. =