Osobne som túto úpravu neskúšal, ale na starých stránkach Pretaktovanie.sk bolo uvedené toto:

Re: OPRAVDU TO FUNGUJE!!! (Skóre: 0)
kým: Anonym dňa 18. February 2003

OPRAVDU TO FUNGUJE!!!

Vyzkouseno na dvou typech desek K7T266 PRO2 a RU.
Zde je strucny vycuc toho k cemu dospeli prispevatele oficialniho MSI fora k teto problematice (asi 22 stranek tohoto fora vcetne moznosti pretaktovani T-BREDu na teto desce):

Thread FAQ (unsupported K7T266pro2 CPUs)

(There is no way to edit the title above, but this is not a FAQ,
just a summary of what has been said/tested/discovered throughout
this thread, so late comers can jump to the results/conclusions)

K7T266pro2(-RU) supports officially AMD XP Palomino
only, and up to 2100+

XP with Thoroughbred core should work from 1700+
up to 2600+. In the worst case, with a motherboard
mod. This mod is UNSUPPORTED by MSI, and you will
loose your warranty. Do it at your own risk.

Though 2600+ should work, no one has up to date tried
it. The highest tested CPU was 2400+

Nothing above 2600+ will work. Do not ask. They have
FSB 166Mhz. Also be sure you choose a 2600+ with
FSB 133Mhz. Most of them are 166Mhz.

No one has successfully run any Thoroughbred XP
without the motherboard mod. However one should try
first without it.

In order to run XP >= 2200+ you need BIOS v37. There
was a v37 beta BIOS that supported XP >= 2200+, but
it seems that all the new features are included in v37.
You could try the beta BIOS as a last resort, but there
will be probably no difference.

You should NOT flash your BIOS with from within
Windows. You risk your motherboard to become
unusable

The voltage provided by the motherboard to the CPU
has nothing to do with the mod, nor the BIOS. It seems
that the CPU tells which voltage is needed and the
motherboard provides it. Then, optional BIOS voltages
become available around/above that value.

References:

BIOS v37
Beta BIOS with the mod explained
AMI Flash BIOS Procedure
Processor Electrical Specifications

------------------------------------------------
Let me know of any corrections or additions, but please
DO NOT reply this post with questions!!! This is a
compilation of things that were said here. If you have
questions go and read ALL the posts. If you still have
questions, reply to the proper post, or write a new one.
Reply to this post only if you have more answers

VSECHNO OSTATNI NAJDETE NA:http://www.msi.com.tw/program/e_serv...a0d6612&page=1

Na co presne je kond. C37 nevi ani BAS (administrator tohoto fora),jiste ale je,ze tato informace pochazi primo od MSI,kde ma BAS asi nejakeho technologickeho spiona.Podle meho se jedna o upravu zpozdeni resetovaciho signalu pro T-BREDa - bez odpajeni tohoto kondu se T-BRED na teto desce zkratka nerozjede - OVERENO NA VLASTNI KUZI A NA TRECH TECHTO DESKACH.Upravu jsem provedl uz na osmi deskach (chodi za mnou primo zakaznici fy. CHI BRNO).
BIOS NEPOTREBUJETE SPECIALNI OD BASe,staci si stahnout oficialni BIOS od MSI verze 3.7 - funguje -
OVERENO na vsech osmi kusech.Pozn.BIOS 3.7 je krome odpajeni kondu dalsi podminkou NUTNOU pro rozchozeni T-BREDu na K7T266 PRO2.Pokud nevlastnite mikropajku s prislusnym hrotem (tvar U ve velikosti SMD 0602),sverte radsi odpajeni nekomu jinemu.Lehce se vam muze stat,ze odloupnete pady a kousek spoje pak zkratujete na jiny spoj nebo pad (PAD=pajeci ploska soucastky).NIKDY NEPAJEJTE NA MOBO TRAFOPAJKOU NEBO JI ODPALITE,VZDY VYJMETE CPU A POD DESKU DEJTE POLOVODIVY ANTISTATICKY MOLITAN (napr. z GM Elnic.).

BASTLENI ZDAR,

LIBOR

[ Odpoveď ]

Re: UPRAVA versus PALOMINO (Skóre: 0)
kým: Anonym dňa 18. February 2003

Jeste poznamka k funkci PALOMINA po uprave.PALOMINO FUNGUJE PO UPRAVE NAPROSTO BEZ PROBLEMU - overeno na PALOMINU XP1600+ 1700+.
LIBOR

A ešte k tomu kondíku bolo uvedené:
Teda otočte si základnú dosku tak, aby ste mali PCI sloty na spodnej strane a CPU Socket na vrchu. Nájdite 3 veľké kondenzátory medzi konektorom na zdroj a CPU Socketom. Ak sa pozriete na najvrchnejší kondenzátor z daných 3, trošku na pravo od neho je situovaný SMD kondenzátor nazvaný C37. Daný C37 treba odstrániť a vaša doska bude podporovať Thoroughbred 2200+ (podľa autora - podľa mňa ak je pravda, čo sa píše, tak aj vyššie modely).
Toľko citáty.