Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I can't seem to understand what is the difference between the two, seen in wikipedia.
I think I've got it that they are both 64bit, but other then that, I'm lost.

share|improve this question
    
Should move this to superuser.com –  squillman Mar 1 '10 at 21:57
    
I'm sorry, I'm just too confused about where to ask what, and I got already 2 questions moved from one site to another. If it's more suitable in superuser.com, let the move begin. –  Doron Mar 1 '10 at 22:01
    
Yep, it'll happen :) –  squillman Mar 1 '10 at 22:11
add comment

migrated from serverfault.com Mar 1 '10 at 22:34

This question came from our site for professional system and network administrators.

3 Answers

up vote 8 down vote accepted

A Pentium Dual Core is essentially two cores based on an older design slapped on the one chip. They have a reputation for getting rather warm under load.

Core 2 Duos are based on a newer core design that is significantly quicker clock-for-clock in most operations than a Pentium Dual Core, and consumes less power (so giving off less heat) while doing so. They also tend to come with much more on-die cache, helping speed even more in many cases. Also, the "Core 2" core design was build with multi-core in mind so is more efficient in terms of how its cores interact (i.e. when sharing on-die cache and such) than the Pentium Dual Core (which was designed initially to be used as single-chip single core or multiple single-core chips).

So a C2D will operate faster, even at lower clock speeds, while using less power.

There are single-core Core 2 based designs, which may complicate the comparison a little more. If you are looking for dual core make sure you get one marked "duo".

Not all Core 2 chips support VT, which may be a consideration if you plan to use virtualisation a lot (though VT is not required for this, it can being performance benefits depending on the virtualisation solution you chose). See http://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors for more detail (look for those that have VT listed in the features). I believe that no Pentium Dual Core chips support VT as the basic core design predates this feature by quite a time.

share|improve this answer
2  
+1 - Intel really should've had avoided the "dual core" name at all in the first one. Every little someone asks this question cause of it. –  ldigas Mar 1 '10 at 22:38
    
NOT ALL Core 2 chips support VT. All them are 64bits. –  Melvyn May 18 '10 at 19:24
add comment

One thing to remember, look any cpu up by the five diget code (like SL7EL) on Intels web site to make sure of what you are getting, they turn features on and off seemingly at random to segment the market.

share|improve this answer
add comment

From here :

In terms of features, price and performance at a given clock frequency, Pentium processors are positioned above Celeron but below Core and Core 2 microprocessors in Intel's product range.

Looks like Core 2 has better L2 caches, higher top clock speeds, higher top bus speeds, and quad-cores are available.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.