~~Has anyone tried this Mod for multipier unlocking?~~~

[EXman]

Lost circuits 5 second mod for unlocking Tbred multipliers

I'm thinking about using this on an XP333-R seems easy

would love to use 14x or so

 

[nania]

Does anyone know the optimum multiplier (ie: the point where the FSB/Memory starts to bottleneck the CPU)? I remember this test performed on the original Athlon and the P3. The P3 began to show memory bandwidth limitations at 7x multiplier and the Athlon at around 6x (or 12x single rate RAM). As the processor speed increases, latency and other parasitic effects may raise this number higher.

Assume DDR memory with 2-2-2-6T

Can someone point me to an answer?

 

[johncar]

Originally posted by: EXman
Lost circuits 5 second mod for unlocking Tbred multipliers
I'm thinking about using this on an XP333-R seems easy
would love to use 14x or so

Then stay as far away from that mod as possible. It's just "another way" to execute the "wire trick" which "grounds" the 5th Bit so the system can have access to the "lower Multiplier range" limited to 5X-12.5X. Lots of "lack of detail" floating around.
John C.

 

[rbV5]

I'm using the similar "wire trick", johncar is right of course. You will have unlocked multipliers to 12.5 (13 will give you 12.5). I use multiplier 12 and crank the FSB myself.

 

[EXman]

So anyone know a good place with a how to on how to unlock the upper multipliers? 13X and up

 

[ChampionAtTufshop]

you have to chop up bridges
i chopped last 3 L3 (along with Soulkeeper) and have higher mults

 

[KF]

One more time, as johncar has expained: The CPUs for which this mod works are ALREADY UNLOCKED as they come from AMD. You can set the mutiplier code on the CPU pins to anything you like and overide the code that AMD has set. What is happening is that many mobos do not have the right stuff to set the high bit (5th bit), but do have it for the remaining 4 bits. You can mod the mobo or the CPU to set that high bit anyway. Once you set it, you will have either the higher mutlipliers (5th bit high for multipliers over 12.5) or the lower mutlipliers (5th bit low for multiplers 12.5 or lower).

Former Athlons had only 4 bits that could be set.

Do a search on member johncar for some links.

 

[dxkj]

gotta love this

"we came up with a simple modification that is absolutely risk-free and can be done in about 5 seconds"





<FONT color=#ff0000 size=4>"Following the procedure outlined below can irreversibly damage your equipment and we assume no responsibility whatsoever for any consequences of even reading this article."

</FONT>

 

[johncar]

Originally posted by: EXman
So anyone know a good place with a how to on how to unlock the upper multipliers? 13X and up

Exman,
KF has given you a good overview of the issue. Here's the link....

<a href="http://www.beachlink.com/candjac/index.htm">
http://www.beachlink.com/candjac/index.htm</A>
Link to Workarounds article which explains how to get access to the low range with a high range CPU, and how to get access to the high range with a low range CPU. The former is simple and easy, the latter, which you want, can be quite a bit more complex depending on the mobo and also the speed grade of the CPU. So....

Suggest you read the article carefully. Then also read the Multiplier Code, Circuits and Tbred articles, because an "understanding" of the Multiplier Code and its related circuits etc makes understanding the workaround that much easier...esp if you're working with 1700thru 2000 CPUs = " the special cases".
John C.

 

[EXman]

ok thanks I think I am going to do this mod here because I know my mobo will support it. it unlocks the 5x-12.5x multipliers and I will run my ram at the edge. what you all think about that?

I just have a quirky XP333-R mobo and over at AMDMB forums a buch of guys used this to work.

 

[johncar]

Originally posted by: EXman
ok thanks I think I am going to do this mod here because I know my mobo will support it. it unlocks the 5x-12.5x multipliers and I will run my ram at the edge. what you all think about that?

I just have a quirky XP333-R mobo and over at AMDMB forums a buch of guys used this to work.

First you asked for the high range, now the low range. We have no problem with "either" except this..... you seem to think a mod is needed for either range... for the same CPU...not so.

When your CPU's default Multiplier is 12.5X or lower, there is no need for a mod to have access to other low range Multipliers, mod only to get access to 13X and up.

When your CPU's default Multiplier is 13X or higher, there is no need for a mod to have access to other high range Multipliers, mod only to get access to 12.5X and lower.

Got it now??
John C.

 

[rbV5]

ok thanks I think I am going to do this mod here

Thats exactly how mine is. XP333-R rev 2.1, I run my tbred 2100 @ 12 x 182 2.18 GHz @ 1.65 vcore. Nice and stable and fast.