Intel chip & WinXP 64

[ryan256]

We have several CAD workstations here at the office. Alot of them are pretty old and they're looking to upgrade them. They are looking at getting WinXP 64 for these machines as well so they can go beyond 4GB of memory. However they are also looking at getting the new Intel dual core chips and aren't even considering AMD! Now excuse me but aren't the dual core chips still 32bit?? I'm doubting they will even work together but even if they do.. don't you lose the advantage of a 64bit OS by using a 32bit chip?

Am I being fussy for nothing?? Or will this upgrade project land flat on its face? :roll:

 

[Quinton McLeod]

Yup... Intel doesn't even run true 64bits... It runs a total of "64bits" bandwidth wise. But they are not true 64 bits processors

 

[MrChad]

Originally posted by: ryan256
We have several CAD workstations here at the office. Alot of them are pretty old and they're looking to upgrade them. They are looking at getting WinXP 64 for these machines as well so they can go beyond 4GB of memory. However they are also looking at getting the new Intel dual core chips and aren't even considering AMD! Now excuse me but aren't the dual core chips still 32bit?? I'm doubting they will even work together but even if they do.. don't you lose the advantage of a 64bit OS by using a 32bit chip?

Am I being fussy for nothing?? Or will this upgrade project land flat on its face? :roll:

The Pentium D chips are 64-bit, and they should work with Windows XP 64.

Originally posted by: Quinton McLeod
Yup... Intel doesn't even run true 64bits... It runs a total of "64bits" bandwidth wise. But they are not true 64 bits processors

Where are you getting that information from?

 

[mechBgon]

This set of charts will answer the 64-bit question (scroll right to see the EMT64 column).

 

[xtknight]

Originally posted by: ryan256
Now excuse me but aren't the dual core chips still 32bit??

Nope. In fact every AMD dual-core I know of is a 64-bit one. From looking at the chart mechBgon posted, that's true for Intel too.

I'm doubting they will even work together but even if they do.. don't you lose the advantage of a 64bit OS by using a 32bit chip?

Am I being fussy for nothing?? Or will this upgrade project land flat on its face? :roll:

No. The hybrid chips (32-bit+64-bit) have 64-bit instruction sets (x86_64), twice as wide registers (the latter half of the width allocated for the possible 64-bit mode), and physical address extension (PAE) for extra RAM. Intel calls theirs EM64T (Enhanced Memory 64-Bit Technology) and AMD calls theirs AMD64 (Advanced Micro Devices 64-Bit).

 

[excalibur3]

It won't be until merom comes out in the middle of the year that the dual core chips will be truly 64 bit.

 

[Nothinman]

They are looking at getting WinXP 64 for these machines as well so they can go beyond 4GB of memory

If you mean you want the app to be able to use >2G of VM then you had better make sure the developer makes a 64-bit version before spending any money. Because you can get x86 boxes now that will take up to 64G of physical memory with PAE enabled.

Yup... Intel doesn't even run true 64bits... It runs a total of "64bits" bandwidth wise. But they are not true 64 bits processors

That has to be the stupidest thing I've ever seen written...

 

[ryan256]

Originally posted by: Nothinman
If you mean you want the app to be able to use >2G of VM then you had better make sure the developer makes a 64-bit version before spending any money. Because you can get x86 boxes now that will take up to 64G of physical memory with PAE enabled.

Nope.. this is >4GB of physical memory. CAD applications eat it up like crazy. The developer has told us our app can address up to 16GB.
Ok... after doing some more reading last night I'm starting to think we'll be ok with the Pentium D chips. I thought the only 64bit chips Intel had was their Itanium line.

 

[hooflung]

Originally posted by: Quinton McLeod
Yup... Intel doesn't even run true 64bits... It runs a total of "64bits" bandwidth wise. But they are not true 64 bits processors

Technically Intel 32 bit chips do fall into this category. They have a 64bit databus but only 32bit registers. So don't feel bad from all the insulting replies to your post. However, Intel does make AMD64 extension compatible processors dubbed EM64T that do run in a full 64bit register mode but you must have the operating system and drivers to support it.

Pentium Ds do run in 64bit register mode.

 

[Nothinman]

Nope.. this is >4GB of physical memory. CAD applications eat it up like crazy. The developer has told us our app can address up to 16GB.

But unless they told you that it's a 64-bit version they could be talking about a 32-bit version using AWE and moving to 64-bit won't help you with that.