blackhole- Limitations when using XP 64-bit
When 64-bit computing for the desktop was mooted by Advanced Micro Devices, its detractors said it was unnecessary. Among the reason cited were 64-bit processors for the desktop were pricey, and only high-end applications such as computer-aided design/computer-aided manufacturing and three-dimensional modelling could properly benefit from it.
A few years later, AMD’s 32-bit-compatible Athlon 64 processors are not only competitively priced, and in certain cases cheaper than 32-bit processors, but also tend to outperform comparable 32-bit processors based on a variety of benchmarks for 32-bit computing.
However, it will be a while before the average consumer (both end users and corporate user alike) can benefit from 64-bit computing, simply because there are not many applications that require upwards of four megabytes of addressable memory.
For that reason, many applications will run 32-bit mode even though they may be installed and executed on Microsoft’s newly released Windows XP 64-bit.
In fact, those applications may run slower
if they are run in 64-bit mode, assume that everything else remains equal.Imagine
32-bit computing as a fully laden one-tonne truck. And imagine 64-bit computing as a fully laden two-tonne truck. Although the one-tonne truck would not be able to carry as much as the two-tonne truck, it would have superior acceleration and manoeuvrability.
Of course, as processors become more powerful
and applications more demanding in te
rms of addressable memory, 32-bit computing would be inadequate for handling the speed and graphics requirements of future 64-bit desktop applications.
But for now, it is better to run most applications in 32-bit mode even though they are being run on Windows XP 64-bit
. And this is exactly why applications found in Windows XP 63-bit such as Outlook Express, Windows Media Player and Windows remain 32-bit.
This is also why software developers who are users of memory-hungry workstation applications an computer gaming enthusiasts are among the handful of people who stand to benefit immediately from Windows XP 64-bit.
For this select group, the problem lack of 64-bit driver support for a whole range of devices (printers, scanners, joysticks, etc) would be something worth enduring, considering the speed improvements that gain from 64-bit computing.
However, due to the inherent lack of driver support as well as backward compatibility problems with current 32-bit applications
, it is advisable for all who intend to user Windows XP 64-bit to dual-boot. In the event that important applications do not run properly on Windows XP 64-bit, you can always revert to Windows XP by rebooting