Phillip Pi wrote:
Are you saying if I had a dual core Athlon 64 939/AM2 setup, I would
notice the performance differences on the same box?

I'm not sure _why_ you expect to see a performance difference in the first
place.

Think of 64 bit as increasing the ability to carry heavier loads over longer
distances rather than increasing the ability to sprint for 100 metres.

Differences between 32-bit and 64-bit on the same 64-bit machine. I was
expecting 64-bit to be a bit smoother and faster.


On 12/28/2006 2:41 PM PT, Colin Barnhorst wrote:

Performance differences between what?

"Phillip Pi" wrote in message
...
Are you saying if I had a dual core Athlon 64 939/AM2 setup, I would
notice the performance differences on the same box?


On 12/28/2006 12:58 PM PT, Colin Barnhorst wrote:

The clock speed is the same so you would not see differences.
Performance of either platform on a 64bit cpu is a matter of the
hardware. Where you would see a difference is between running a
32bit OS on a 32bit system versus a 64bit system. The increased
efficiency (head room) on a 64bit system will benefit the 32bit OS in
varying degrees.

"Phillip Pi" wrote in message
...
Ah. Hmm, maybe that's why I can't feel/see the differences.
--
Phillip Pi
Senior Software Quality Assurance Analyst
ISP/Symantec Online Services, Consumer Business Unit
Symantec Corporation
www.symantec.com
-----------------------------------------------------
Email: YMC (remove SYMC to reply by e-mail)
-----------------------------------------------------
Please do NOT e-mail me for technical support. DISCLAIMER: The views
expressed in this posting are mine, and do not necessarily reflect the
views of my employer. Thank you.

Ah. I thought the bits were for speeds. Nevermind then!


On 12/28/2006 3:48 PM PT, Robert Moir wrote:

Phillip Pi wrote:
Are you saying if I had a dual core Athlon 64 939/AM2 setup, I would
notice the performance differences on the same box?

I'm not sure _why_ you expect to see a performance difference in the first
place.

Think of 64 bit as increasing the ability to carry heavier loads over longer
distances rather than increasing the ability to sprint for 100 metres.
--
Phillip Pi
Senior Software Quality Assurance Analyst
ISP/Symantec Online Services, Consumer Business Unit
Symantec Corporation
www.symantec.com
-----------------------------------------------------
Email: YMC (remove SYMC to reply by e-mail)
-----------------------------------------------------
Please do NOT e-mail me for technical support. DISCLAIMER: The views
expressed in this posting are mine, and do not necessarily reflect the
views of my employer. Thank you.

A 64bit cpu us more efficient in running both x86 and x64 operating systems
than a 32bit cpu is. An x64 OS is more efficient where heavy memory
requirements come into play and you have added memory above what an x86 OS
can support. But it is the greater number of registers, larger caches, and
other architectual advances of the 64bit cpu's that matters, not so much the
code. That is not to say that code written to run 64bits natively won't
perform better than 32bit code; it will. You can see performance gains, but
not because the code is running faster.

"Phillip Pi" wrote in message
...
Differences between 32-bit and 64-bit on the same 64-bit machine. I was
expecting 64-bit to be a bit smoother and faster.

If a 64 bit CPU can transfer data in 64 bit blocks instead of 32 bit blocks
I would certainly expect that any application such as the OD itself that
moves blocks data around to perform faster since it is the OS that moves the
data normally and not the application and therefore itg can be done with 1/2
of the number of move instructions being executed. Or course you would only
see this gain with applications or OS functions that move a lot of date
which certainly is not a lot of them.
"Phillip Pi" wrote in message
...
Ah. I thought the bits were for speeds. Nevermind then!


On 12/28/2006 3:48 PM PT, Robert Moir wrote:

Phillip Pi wrote:
Are you saying if I had a dual core Athlon 64 939/AM2 setup, I would
notice the performance differences on the same box?

I'm not sure _why_ you expect to see a performance difference in the
first place.

Think of 64 bit as increasing the ability to carry heavier loads over
longer distances rather than increasing the ability to sprint for 100
metres.
--
Phillip Pi
Senior Software Quality Assurance Analyst
ISP/Symantec Online Services, Consumer Business Unit
Symantec Corporation
www.symantec.com
-----------------------------------------------------
Email: YMC (remove SYMC to reply by e-mail)
-----------------------------------------------------
Please do NOT e-mail me for technical support. DISCLAIMER: The views
expressed in this posting are mine, and do not necessarily reflect the
views of my employer. Thank you.

So... gotta ask that stupid question... if'n I run VM's... and I do...
LOL... am I going to benefit from x64 with it's higher RAM ceiling in which
I could possibly run more VM's, even if the app is 32bit?

Lang

"Colin Barnhorst" wrote in message
...
A 64bit cpu us more efficient in running both x86 and x64 operating systems
than a 32bit cpu is. An x64 OS is more efficient where heavy memory
requirements come into play and you have added memory above what an x86 OS
can support. But it is the greater number of registers, larger caches, and
other architectual advances of the 64bit cpu's that matters, not so much
the code. That is not to say that code written to run 64bits natively
won't perform better than 32bit code; it will. You can see performance
gains, but not because the code is running faster.

"Phillip Pi" wrote in message
...
Differences between 32-bit and 64-bit on the same 64-bit machine. I was
expecting 64-bit to be a bit smoother and faster.

Of course. VPC and the memory mangager will handle it fine. The ram
allocation is a block of the host's memory but the 16bit or 32bit OS in the
vm has sees its own address space starting at zero.

"Lang Murphy" wrote in message
...
So... gotta ask that stupid question... if'n I run VM's... and I do...
LOL... am I going to benefit from x64 with it's higher RAM ceiling in
which I could possibly run more VM's, even if the app is 32bit?

Lang

Phillip Pi wrote:
Ah. I thought the bits were for speeds. Nevermind then!


The bit 'width' of a processor doesn't map directly to speed. It maps to how
much 'heavy lifting' of data it can do in one go, and this can lead to a
speed increase, but it isn't a direct and obvious mapping.

"JW" wrote in message ...
If a 64 bit CPU can transfer data in 64 bit blocks instead of 32 bit blocks I would
certainly expect that any application such as the OD itself that moves blocks data
around to perform faster since it is the OS that moves the data normally and not
the application and therefore itg can be done with 1/2 of the number of move
instructions being executed. Or course you would only see this gain with
applications or OS functions that move a lot of date which certainly is not a lot
of them.


If the OS is 32-bit, however, it will only use half of the moved data at a time. the
other 32-bits are "wasted" and the same number of fetches has to be done
whether the processor is 32- or 64-bit. If the OS is 64-bit, all the data is used
from every fetch. To get 64 bits using a 32-bit OS requires two reads of memory
The first read gets 64 bits but the OS can't use that and so uses only the low
32 bits and does another read to get the high 32 bits. A 64-bit OS, of course,
gets all 64 bits in one read.

Tom Lake

Read the article at:
http://www.findarticles.com/p/articl...45/ai_n6268137

It gives you a comparison of Panorama Factory 64-bit on Win
x64 vs 32-bit. The 64-bit is over 40% faster because it can
process data in larger chunks.


Phillip Pi wrote:
Are you saying if I had a dual core Athlon 64 939/AM2 setup, I would
notice the performance differences on the same box?


On 12/28/2006 12:58 PM PT, Colin Barnhorst wrote:

The clock speed is the same so you would not see differences.
Performance of either platform on a 64bit cpu is a matter of the
hardware. Where you would see a difference is between running a 32bit
OS on a 32bit system versus a 64bit system. The increased efficiency
(head room) on a 64bit system will benefit the 32bit OS in varying
degrees.

"Phillip Pi" wrote in message
...
Ah. Hmm, maybe that's why I can't feel/see the differences.