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.

Are the Intel Pentium D and Intel Core 2 Duo processors the same?

share|improve this question

2 Answers 2

No. Pentium D is basically two P4 Netbursts on the same silicon. Core 2 Duos are newer, faster, and more efficient.

share|improve this answer
    
FYI - I rolled back the edit, because the edited "at lower clock speeds" is what efficiency is about. –  MDMarra Apr 26 '10 at 21:36
    
Pentium D is one of the worst CPUs Intel ever made. Core 2 Duo one of the best. (For its price, for its time, for its power usage, that is, all things considered.) –  David Schwartz Aug 30 '11 at 18:27

Even though they share the same socket- Socket 775- and may run on the same motherboards, they are not the same.

The Pentium D uses 2 Netburst architecture CPU cores on separate dies (two chips, one package), each with a small cache, sharing a single "quad pumped" Front Side Bus of 533 or 800 MT/s throughput (4 x 100MHz x 2=Double Data Rate) for desktop processors.

First generation Smithfield Pentium D's used a 90nM process and have very high power consumption. Each core has a small 1MB Level 2 cache.

Second generation Pressler Pentium D's used a 65nM process and have a somewhat high power consumption. Each core has a moderate 2MB Level 2 cache.

All Pentium D's are 64 bit and some Pressler's support VT for advanced virtualization. Extreme Editions added Hyper-Threading.

The Core 2 Duo processors have two Core 2 architecture CPU cores on a single die, often sharing a large 2nd level cache up to 12MB in size. They have a much broader range of speeds, mfg processes and applications than Pentium D and were commonly available in many FSB speeds from 533 to 1333.

All Core 2 Duo processors are 64 bit and none support Hyper-Threading.

When given the option, always choose a Core 2 processor, even if it has a lower Megahertz rating. Even the lower-branded Pentium Dual Core (essentially a Core 2 dual processor with a smaller, shared cache) above ~ 2.0GHz will best top end Pentium D's in processing and power efficiency.

Both are considered obsolete, as Intel is phasing out the Core 2 architecture in favor of Core i3/i5/i7.

share|improve this answer
    
Core 2 Duos don't have L3 cache. L3 wasn't a standard feature until the Nehalem i7 Quads. Also, a Core 2 Duo is not two Core architecture CPU cores one one die. It is two Core 2 CPU cores on one die. The Core architecture is the ancestor of the Core 2s and was only used in mobile platforms. –  MDMarra Apr 26 '10 at 21:52
    
I used to use the Core vs. Core 2 distinction too, until both Wikipedia and Intel gave up on it. –  kmarsh Apr 27 '10 at 12:35
    
Intel never gave up on it, the Core series of chips were EOL when the Core 2 counterparts were released. They were never meant to be competing technologies, but the distinction has always been there. –  MDMarra Apr 28 '10 at 2:41
    
Like the term Pentium, "Core" (with no modifiers) is now used by Intel as a class of components, instead of a specific family. –  kmarsh Apr 28 '10 at 12:34
    
@MDMarra Core 2 are the Core architecture. Core Solo/Duo are rebranded Pentium Ms, which have more in common with Pentium 3 than with any other processor. –  kinokijuf Mar 4 '12 at 16:11

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.