Windows XP: How to make Windows XP run faster

This method applies to versions of PROF and HOME. The fact is that the XP code was
Optimized (in later versions of the assembly) to work with slow machines.
Unlikely, but this optimization is disabled by default. When you turn on the optimization option, there is a very noticeable increase in the speed of the system - from 25 to 175%. The essence of optimization is as follows:

In order to make sense to buy the "coolest pentium4", Intel © and Microsoft © have come to an agreement - in the code of the Windows operating system, since version 98se, CPUID was built in, and if it was found that the machine is installed "old and infirm" processor , The system began to artificially slow down the work. It's no secret to anyone that most tasks can be performed on a Pentium-I-133. Suffice it to recall the good old demos, which looked no worse than the current graphics monsters, but went for another 486 processor. Indeed, even on the Z-80 processor it was possible to do something resembling the current shaders, to play MP3, etc.

So, How to make Windows XP run faster

This operation is possible only on WindowsXP, because only here programmers have taken care of the possibility of disabling the CPUID check. To do this, right at the beginning of the installation of WindowsXP, when the word "hardware check" is displayed on a black background, press F5 and select i486 from the offered list of processors and continue the installation. (In the original of this article nothing is said about the formatting of the hard disk, but in testing the method
It turned out to achieve the desired result only when installing on a clean partition.)



Addition from now on Thanks Filippych
How to choose the required version of the kernel and HAL even during the installation?
At the very beginning of the text phase of the XP installation, when the "Setup is inspecting your computer's hardware configuration" message appears, press and hold the "F5" key. In the list of versions of the HAL libraries that appears on the screen, select the version corresponding to your computer, or select the "Other" option to specify the library file from the hardware manufacturer. Then continue installing Windows. The following versions of the HAL are included in the XP package:

ACPI Multiprocessor PC - for ACPI-systems with multiple processors.
ACPI Uniprocessor PC - used for ACPI-systems with a multiprocessor motherboard and one installed processor.
Advanced Configuration and Power Interface (ACPI) PC - used for uniprocessor ACPI systems.
MPS Uniprocessor PC - for systems without ACPI support, with a multiprocessor motherboard and one installed processor.
MPS Multiprocessor PC - for multiprocessor systems without support.
ACPI Compaq SystemPro Multiprocessor or 100% compatible - for Compaq SystemPro computers or fully compatible with them.
Standard PC - used for any standard computer, not multiprocessor and without ACPI support.
Standart PC with C-Step i486 - used for computers with support for this technology.

Results of testing the system based on the AMD ATHLON XP 2500+ processor (256k
Cache) + mb Soltek 75-FRN2 (nF2u400) + 256mb DDR PC3200 + ATI Radeon9600 + HDD IBM
Deskstar 40gb 7200rpm.


CPUID on CPUID off

3D MARK 2001se 9896 13254
3D MARK 2003 2879 4245
AusCPUbench'03 11025 16811


Enough staggering differences in the most popular tests to date.