So my solution may be better if you want, but i was just doing experiments and finally found the result suitable for me. The idea is to make new installation of Vista with integrated SP1, but probably this can work while updating the existing installation (i'll check it later)
First of all, you need 2 distributives: OLD (without sp1) and NEW (with sp1 integrated). I was using x64 ones.
From OLD iso you need to extract boot.wim and repace this file in NEW iso by its version from the OLD iso, and burn this iso onto dvdrw. You need this step otherwise installation will not start from dvd and you will be waiting and it will never ends.
So, leave this dvd in your drive and restart. The minipe will launch, do not choos Install directly, because you will get later error about corrupted wim, but select restore, start command line and go to your dvd drive. Then launch sources\setup.exe, installation will start.
While the system will be installing, press alt+tab and go back to your console. If you have installed system, you can run FAR manager and this will be better and quicker. Your task is to replace windows\system32\drivers\amdk8.sys by the one from OLD windows (without sp1). When you see this file extracted, you can replace it and do nothing ultil restart.
After the system restart, you must get patience because the rest of installation the system will continue on 800mhz, it may last more then half an hour.
And, very important! After second reboot, you should AGAIN boot from your dvd and AGAIN replace this file (windows\system32\drivers\amdk8.sys) by the one from OLD windows. In x64 systems, the OLD file has a size of 47104 bytes, and NEW one is 50688 bytes. Unless the OLD file will be on this place, your system won't start and you will get black screen before logon and nothing more. So, in WORKING x64 system size of file amdk8.sys MUST be 47104 bytes, and version 6.0.6000.16386.
So, if everything is correct, your system will start up, but will be extremely slow. Its rate will be about 2.1. And now we must make it faster, as it possible in our case.
First of all, download the latest version of CrystalCPUID from
http://crystalmark.info/software/Crysta ... dex-e.html
There are different versions for x32 and x64, choose the proper. If you run x64 system, don't panic, all drivers are signed.
Download, unpack and run, then go to Function-> AMD K6/K7/K8/LX Multiplier or press Ctrl+K. Enable Change Voltage. Put voltage at value 1.3V. ONLY AFTER THIS set new multiplier to 13.0. If you do not follow this order, your system will stop working.
Now, you can check your rating, it will be more then 2 times better. In CrystalCPUID you can create the shortcut on your desktop and put it in autorun of your system or schedule a task to launch this shortcut each time running the system.
The one problem you can face is that the clock will be always 2600 MHZ and the cooler can make a noise if you are working hard. So you can make shortcuts of the following range: (don't forget to change firstly voltage and secondly multipiler!)
13.0x 1.300V.
10.0x 1.250V
7.0x 1.200V
5.0x 0.950V
and put them in your favourite launcher in order to change your speed depending on your work:)
Of course, this solution is not very smart, but it works good for me and i hope for you too, and if there will be any solution from microsoft, amd or siemens, you can always restore the original amdk8.sys and enjoy full supporting of multiplier management!
So, good luck everybody who wants to do this, later I will try to update the existing copy of Vista to sp1 and install server 2008 on my laptop, if anybody will have such experience, please post it here, preferably in English;)
What you see is all you get.