Intel's P4 6XX series..... 64 bit?

[PremiumG]

Are the latest Pentium 4's 64 bit? i'm talking about the 6XX series.. According to intel.com, it has Intel® Extended Memory 64 TechnologyF.

So what does that mean exactly? Is it 32 bit or 64?

 

[Capt Caveman]

Yes, the 6xx series is 64 bit.

 

[bjc112]

Originally posted by: Capt Caveman
Yes, the 6xx series is 64 bit.

 

[Chode Messiah]

I heard that they aren't full 64-bit, but have 64-bit extensions.

 

[dmens]

em64t is the same thing as x86-64, so yes.

 

[ryanv12]

Athalon 64's aren't full 64-bit either. If they were, you wouldn't be able to run 32-bit applications.

 

[JBird7986]

EM64T=AMD64

EM64T is Intel's nearly exact copy of AMD's x86-64. This was done because AMD was hurting Intel's sales by having a perceived advantage, and IA-64 wasn't going anywhere with its less than stellar performance.

 

[Zebo]

Yeah it's a A64 clone in instruction. AMD shared this tech with intel... actually they both share according to licences.

Good read on 6xx
http://techreport.com/reviews/2005q1/pentium4-600/index.x?pg=1

 

[JBird7986]

He called one thing wrong:

To be fair, I think the obvious choice for those in the know will be the 600 series, given its EM64T support.

Yeah...just look at the Anandtech polls. ::rolls eyes::

 

[Aenslead]

most ppl in the industrie like to call iEMT64 "iAMD64", since they are a carbon copy of AMD64's set of instructions.

If you don't have a complete Intel system yet, or a skt775 motherboard, I suggest you wait until Intel's i945 chipset.

 

[LTC8K6]

This was done because AMD was hurting Intel's sales by having a perceived advantage, and IA-64 wasn't going anywhere with its less than stellar performance.

No, this was done because AMD and Intel work together and have cross licensing agreements for things like this, such as SSE.

 

[ProviaFan]

Originally posted by: LTC8K6
No, this was done because AMD and Intel work together and have cross licensing agreements for things like this, such as SSE.

But if Intel truly believed that AMD64 extensions were useless, like they said numerous times in the past, then they could have followed what they supposedly believed and not taken advantage of the cross licensing. How much AMD "hurt Intel's sales" is a matter of debate (it probably wasn't too noticeable), but the fact is that Intel talked crap about AMD64 (nobody needs it, and BS like that), which shows that they were concerned about it to some degree. Now that they have their own version, everybody needs it for future compatibility, etc... :roll: