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Multiplier unlocking PLEASE READ!

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dguy6789

Diamond Member
Ok I have my Athlon Xp 2600+ here. right now its multipliers are unlocked from 5 to 12.5. There is a way to get it to like 22 correct? I need some help, can someone give me a detailed description on how to do this?
 
Asus A7N8X, it is unlocked from 5 - 12.5x, but no more then that. i cant go over 166 fsb so i need to go more multiplier
 
Originally posted by: dguy6789
Asus A7N8X, it is unlocked from 5 - 12.5x, but no more then that. i cant go over 166 fsb so i need to go more multiplier
Click to expand...

May-b a BIOS update? They should all be unlocked.

 
it lets me pick like 5 - 16, but 13 and up are like lower for some reason, 166X13 results in 833mhz. What to do?
 
Originally posted by: dguy6789
it lets me pick like 5 - 16, but 13 and up are like lower for some reason, 166X13 results in 833mhz. What to do?
Click to expand...

Well 166X13 is 2100 mhz, may-b it can't handle that at those settings.

Bump your Vcore and Vdimm.

Try 13x100 to make sure it's CPU limited.

Then try 16x133..

And so on.
 
no good, upped the voltage all the way up to 1.75 and it will still do 833mhz at 13X166. it is a 1700 Tbred b, my friend got it to 2.4ghz upping fsb on his rig, but i need more multipliers. Im at the newest bios 1006.
 
what about the bios? i have the newest, 1006, and it has the multipliers 5 - 16, but it only actually works 5 - 12.5, 13 drops back down to 5, dont ya understand?
 
What do you mean "can't go over 166 FSB"?
That's exactly what you should be trying to do, isn't it?

Regardless, you have to not only blow that bridge, you need to "fix" the other multi bridges so the resulting multiplier will POST the system, not only the first time, but in case you ever need mobilize the chip somewhere.

THe main thing is, you need to tell us what chip you have up front... Do NOT call it an XP2600 if it's an XP1700, call it an XP1700 o'c to xxxx

Anyway, the following is a pic of the bridges you need to burn on an XP1700, to end up with a 13X multi. Burning it with 5V from a power supply or a 9V battery or whatever will do fine. The left circled bridge (burning through it) drops the multi down to 5X default, then burning the right adds +8 to that, = 13
Xp1700 burn to 13X
 
Originally posted by: rommelrommel
Yes, if you had a XP2600+ then you'd only be able to access 13X and up.
Click to expand...
There are two of 'em though, one is 133FSB, but the other is 166FSB, 12.5X, presumably what he was implying at the start. Since it would have a different (more difficult, painting required) mod, he may be better off to have the XP1700 anyway, at least instead of the 166FSB version of XP2600. It's nice how AMD set it up, to have all bridges intact on the low end part instead of vice-versa, for the high-end to have unburnt bridges, since it's a whole lot easier to burn a bridge than paint.
 
tried the pin mod, dont like it, has to much risk.
If i did the mod and burnt the bridges, would i be able to do only 13, or 13 and below 13 and up or what? And what do i actuallyu do to burn it, just touch a wire on it thait is touching the 5v on the battery?
 
13.5 is what i am aiming at, so that i would have a 2800+ I can not go above 166fsb because my memory is 166mhz, and i want my cpu and mem to be in sync, and my meory gets awesome timings at 166, dont wanna lose them.
 
Originally posted by: dguy6789
tried the pin mod, dont like it, has to much risk.
If i did the mod and burnt the bridges, would i be able to do only 13, or 13 and below 13 and up or what? And what do i actuallyu do to burn it, just touch a wire on it thait is touching the 5v on the battery?
Click to expand...
After you burn through the "+8" bridge, you have all the same multiplier adjustments selections as before, but now when you choose a multi over 12.5X, you get it, but when you choose one under 13X, you get it PLUS 8. So, if you chose 10X for example, saved and exited the bios, the system would try POSTing with an 18X multi, which it obviously won't be able to do unless you dropped the FSB back down to ~133MHz.

I suggested 13X mult because you really only need to get over the +8 "hump", then can choose what you want in the BIOS. The lower the initial multiplier, the better the odds of a hasstle-free post, perhaps even at default voltage (though that's a BIG YMMV). Plus, the 13X multi only requires buring through 1 extra bridge, while 13,5X requires two. Any bridge burnt through can of course be painted back "together" to complete the circuit as with any AMD had burnt. Also, someday you may decide you do want to raise the FSB... dropping memory timings and raising the FSB, memory bus, keeping them synchronous, can be more of a performance boost than just good memory timings, providing you're then able to raise the FSB by more than a little bit. If it were me I'd set the memory to most conservative timings possible and see how high you can push the FSB before ever modding the CPU, then when you find the FSB ceiling, THEN see what memory timings you can tweak. I'd shoot for 200MHz FSB w/sync memory. get a few benchmark scores, then at least you'll better know if the end result really was optimal. If you get outstanding memory throughput but the same slow FSB, it's going to be a bottleneck.

To burn the bridges, touch positive and negative leads from power source to the contacts (dots) on each end of the bridge to burn. A fraction of a second and a blue spark later it's done. I've used up to 20V to burn 'em but that's just what I had handy at the time, >=3V should be fine, maybe even 1.5V though I don't recall hearing of anyone using so little V.
 
Looks like you got a link to the bridges. It would be the bottom L3 in that picture. The 2600+ seems to be a 12.5x mulitplier, so that would turn the CPU into a 20x multiplier. 20 x 166 = 3320 MHz, so it won't boot at the default, unless possibly you set the FSB to 100.

It is easy to open a bridge by scratching the plastic with a sharp pointed blade, like an Xacto knife. Don't press hard. When it's done, it looks almost like a surface scratch. There is a hairlike conductor, just under a paper-thin layer of plastic, joining the two surface dots. I checked it with an ohmmeter with the clips on some sewing pins.

>what about the bios? i have the newest, 1006, and it has the multipliers 5 - 16, but
>it only actually works 5 - 12.5, 13 drops back down to 5, dont ya understand?
I did't realize ASUS was selling outdated mobos like MSI. Thanks for the good info. DFI's NFII will cross the 12.5 to 13 boundary.

To change or set the multiplier, some people may have to do a translation, although the ASUS BIOS already has a translation from what you say (and that's what gave people the wrong idea that ASUS could access both sets of multipliers with a BIOS update.) 5.5 in the BIOS gives you 13.5.

ratio, BIOS map for high multipliers.
no 11
19 11.5
no 12
20 12.5 this is why the bridge multiplier change converts into a 20x
13 5

13.5 5.5 <---

14 6
21 6.5

******
15 7
22 7.5
16 8
16.5 8.5
17 9
18 9.5
23 10
24 10.5

>when you choose one under 13X, you get it PLUS 8. So, if you chose 10X for example, saved
>and exited the bios, the system would try POSTing with an 18X multi

That would be logical. But 10x actually gives you 23x , not 18x. To get 18x, you set 9.5. The lowest one that violates the +8 rule is 6.5. This gives you 21x instead of 14.5, and 14.5 does not exist.
 
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