Multiplier on the fly - Confirmed list
The following report is applicable the Barton, Thoroughbred, Thorton and Applebred.
This report is inapplicable to laptopPC's as it is because of it which is written towards the motherboard for desktops. It is because processing of the bridge may have bad influence on operation of PowerNow! by the Laptops.However, description by my presumption is also included in it. Please confirm it for yourself.
The difference of operation by the motherboard.
It is necessary to check the BIOS vender of a motherboard and to consider how you have to change the bridges.
[ Type A ] The products are started by L3 multiplier, even when Mobile CPU is used.
At the Loked Athlon XP, it always starts in a rated multiplier also by the case of Mobile operation.
In these mother boards, it always starts by L3 multiplier or the fixed starting multiplier.
All are solved by closing L5 [1] and L5 [2].
According to our test, the BIOS vender applicable to it is Award.
We checked the following products.
| Manufactures | Products | Chip set | CPUs | Notes |
| Abit | KV7 | KT600 | XP 2500+, L5 | - |
| Abit | AT7 MAX2 | KT333 | XP-M 1400+ | - |
| ASUS | A7V8X | KT400 | XP-M 1500+ | 4X is unstable. |
| ASUS | A7V333 | KT333 | XP 2500+, L5 | [Zoltan] |
| ASUS | A7S333 | SiS745 | XP 2500+, L5 | - |
| ASUS | A7S266VM | SiS740 | XP-M 2500+ | rev1.02 BIOS 1009 |
| ASUS | Terminator K7 DDR | SiS740 | AHM1100AVS3B | - |
| ASUS | SONY PCV-JX12BL5 | SiS740 | XP-M 2500+ | - |
| Aopen | AK77-600N | KT600 | XP-M 2500+ | - |
| AOpen | AK77-8X Max | KT400 | XP-M 1600FWS3B | - |
| Aopen | MK77M | KM266 | XP-M 1700+ | - |
| AOpen | AK76F-400N | SiS748 | XP-M 1400+ | 4X is unstable. |
| AOpen | AK75 | SiS745 | XP-M 2500+ | - |
| BIOSTAR | M7VIT Grand | KT600 | XP-M 1700+ | - |
| BIOSTAR | iDEQ 200V | KM400 | XP-M 1500+ | - |
| BIOSTAR | M7VIG Pro | KM266 | XP 2500+, L5 | - |
| BIOSTAR | M7VKS | KLE133 | AHM0900AVS3B | - |
| Chaintech | CT-7SID | SiS735 | AX1600DMT3C, L5 | - |
| CFD | KX333PRO | KT333 | XP-M 1700+ | - |
| ECS | K7VTA3v5 | KT333 | T-Bred B | [SieQ] |
| Epox | 8KMM3I | KM400 | XP-M 2400+ | - |
| Epox | EP-8K7A | AMD761/- | AHM900AVS3B | - |
| FIC | AT31 | RADEON 320 IGP | XP 2500+, L5 | - |
| Gigabyte | GA-7VT880 Pro | KT-880 | XP-M 2500+ | - |
| GIGABYTE | GA-7VT880 Delta-FSR | KT-880 | XP-M 2500+ | AMI BIOS |
| GIGABYTE | GA-7VT880-L | KT880 | Sempron 2400+, L5 | [F/pokky] |
| Gigabyte | GA-7VT600-L | KT600 | Duron1600, L5 | - |
| Gigabyte | GA-7VM400AMF | KM400A | XP 2500+, L5 | - |
| Gigabyte | GA-7VM400AM | KM400A | XP-M 1700+ | FSB automatic detection is a problem. |
| Gigabyte | GA-7VAXP | KT400 | XP-M 1700+ | - |
| Gigabyte | GA-7VTXH+ | KT266A | XP-M 1400+ | AMI BIOS |
| Iwill | K7S2 | SiS746FX | XP-M 1700+ | 5x to 11x |
| MSI | KT880 Delta-LSR | KT880 | XP-M 2600{ | AMI BIOS |
| MSI | K7Master | AMD761/VT82C686B | XP-M 1800+ | - |
| - | FLORA Prius Deck 530U | KL133 | XP-M 2500+ | [F/nabegon] |
| Iwill | MPX2 | AMD-760MPX | Dual XP-M 2500+ | We were successful. |
| Tyan | TigerMPX | AMD-760MPX | Dual XP-M | We were successful. |
| ** | ** | AMD-760MP AMD-760MPX AMD761/VT82C686B | Dual XP-M | It seems that it is possible. |
A Dual processor is also possible for multiplier change. However, since the load of a power supply circuit is changed rapidly, it does not necessarily succeed.
[ Type B ] The products are started by L6 multiplier , when Mobile CPU is used.
Also by the case of the Loked Athlon, it can start by L6 by making it operate by Mobile.
At these motherboards, when L5 [2] is closed, it starts in L6 multiplier.
Since it is going to start by 24X if you close L5 [1], cautions are required of these products.
With the following products, change of the maximum multiplier is based on processing of the L6 bridge. And we recommend you for L5 [1] to leave as it is.
According to our test, the BIOS vender applicable to it is AMI.
We checked the following products.
| Manufactures | Products | Chip set | CPUs | Notes |
| Asrock | K7S8X-E+ | SiS748 | XP 2600+, L5 | AMI v1.91a [Fr/jerome] |
| Asrock | K7VT6 | KT600 | Athlon XP*, L5 | AMI v1.30 [ow/tsukasam] |
| Asrock | K7VT4A+ | KT400A | Athlon XP*, L5 | AMI v1.30 [ow/tsukasam] |
| Asrock | K7VM4 | VIA KM400 | Athlon XP*, L5 | AMI v2.50 [ow/tsukasam] |
| Asrock | K7VM3 | KM266Pro | Sempron 2400+, L5 | AMI v1.30 [F/ita] |
| BIOSTAR | M7VIG 400 | KM266Pro | Athlon XP, L5 | Award [ow/tsukasam] |
| ECS | 748-A | SiS748 | AHM1100AVS3B | AMI [F/HIROSHI] |
| ECS | K7S5A | SiS735 | AHM1100AVS3B | AMI [F/HIROSHI] |
| ECS | L7S7A2 | SiS746 | XP 2500+, L5 | AMI [F/fuji] |
| IWill | XP333-R | ALiMAGiK 1 | XP-M1400+ | Award [F/Tomyy] |
| MSI | KT6 Delta-FISR | KT600 | XP-M 2600+ | AMI ver.5.10,5.40[F/paar] |
| MSI | KT6 Delta-LSR | KT600 | XP 2500+, L5 | AMI [F/mikenoko] |
| MSI | KT4V (MS-6712) | KT400 | XP 2500+, L5 | AMI [F/ita] |
| MSI | KT3 Ultra | KT333 | XP-M 1500+ | AMI ver5.6 [F/paar] |
| MSI | K7T266 Pro2-RU | KT266A | AXMD1800FQV3C | AMI ,C37 is deleted. |
| MSI | MS-6378 VER.3 | KLE133 | Duron 1.4GHz, L5 | Award [noge] |
| SOLTEK | SL-KT600-RL | KT600 | AHM1100AVS3B | AMI [F/HIROSHI] |
In the Asrock, selection of a starting multiplier is possible by Newest BIOS also at the Loked Athlon.
We think that starting by the L3 may be attained by patching up BIOS. We expect "work" of the excellent programmer who can solve this problem of AMI.
[ Type F ] The product which is not supported
With these products, just as it is going to change a multiplier from software, it freezes. It seems that it is almost impossible. According to our test, it does not operate in the chip set of the nVidia.
| Manufactures | Products | Chip set | CPUs | Notes |
| ** | ** | nVidia | Athon XP-M | Freeze |
| ** | ** | VIA KT-133 | Athon XP-M | Freeze |
| Example | ||||
| Abit | NF7-S rev2 | nForce2 | - | NG |
| ASUS | A7N8X2.0 | nForce2 | Barton 2500+, L5 | NG |
| AOpen | AK73 PRO | KT133 | XP-M 1800+ | Award, 9.5x |
| Epox | EP-8RDA+ rev2.x | nForce2 | XP-M 2500+ | NG |
| ECS | K7VZA | KT133 | XP-M 1500+ | NG |
| GIGABYTE | GA-7N400Pro2 | nForce2 | XP 2400, L5 | NG |
| GIGABYTE | GA-7IXE4 | AMD-751 | AXMD1400FQQ3B | Useing GA-7IX Award BIOS |
| MSI | K7N420 Pro | nForce420D | - | NG |
| MSI | K7Pro2A | KT133 or KT133A | XP 1700+, L5 | NG |
Thanks
- Thank you for having operation of a mother board checked.
- Many BBS members about Athlon in the world. And the BBS member about Athlon in japan.
- The test became possible by CrystalCPUID and CPUMSR. I am thankful to these authors.
- Updated on 11/16/2004
- Updated on 08/02/2004
- Updated on 06/12/2004
- Updated on 04/05/2004
- Added on 03/15/2004
- Added on 02/10/2004
The answer from us to the locked Athlon 01/29/2004
Copyright 2004 ita. All rights reserved. Never reproduce or republicate without written permission.
