L7 Jumpers

[pik33]

My Duron 700 can't boot higher than 930... when it started, then Windows works ok. (cooled it at last - cooler needed lapping, 10C down!!!)
I think it is because of it can't post at 1.6V (std voltage set by L7)

Where can I find description of L7? (I want to do the same pencil job as with L1 to make std voltage higher, 1.7V or 1.75 V)

--------------
Duron 750 @ 910 (130*7), 1.7V, 31C idle, 61C full load, Soltek SL7KAV

[Spode]

if you cover them all up, you get 1.85

[wild_andy_c]

pik33 (Apr 24, 2001 08:17 a.m.):
My Duron 700 can't boot higher than 930... when it started, then Windows works ok. (cooled it at last - cooler needed lapping, 10C down!!!)
I think it is because of it can't post at 1.6V (std voltage set by L7)

Where can I find description of L7? (I want to do the same pencil job as with L1 to make std voltage higher, 1.7V or 1.75 V)

--------------
Duron 750 @ 910 (130*7), 1.7V, 31C idle, 61C full load, Soltek SL7KAV


You cannot expect much more than 900Mhz from a Duron 700 without one of three measures :-

1. Peltier and/or water
2. A voltage modification
3. A miracle

I only managed to get to 1050Mhz with mine after soldering a potentiometer to my motherboard that cross referenced a voltage of 5v through the 2.00v voltage regulator. I do not recommend this to any novice.

[Spode]

I disagree andy. (which I don't often do).

it all depends on how late/early the chip was manufactured. Most durons IMHO are the same. I've had a 600,700 and 2x 800 and they all reached 1gig. All in the 40 something week.

I reckon he should just pencil the L7 bridges to get 1.85v and head for the 950 or 1000.

UPDATE: I just noticed, 61c????? thats a big problem for you, don't even think of running more volts through that yet. Get a better cooler.

[wild_andy_c]

61°C is enough to cause sever disfigurement and pocket money pain in any processor. I'm sure that more than just a lapping solution needs to be sought in the case of this one.

[pik33]

This CPU worked at 72-73C... :( I'm still fighting with cooling this... cooler still needs lapping, it was not finished yet, and I plan to use silver thermal grease as soon as I can get it. and mount another fan in my case. I hope I can gain another 5-10 C.
Now I'm glad I can run this cpu at 910 Mhz far from 70C...
When normal work it has about 45C, 61C is max temp after long test with heavy load applications.
System is stable at 1.7V at this speed.
I tried it yesterday at 960 MHz, it is stable and still far from 70C... so I think this CPU can do over 1 Ghz when better cooled and voltage set about 1.8V
Problem is only it can't post at speeed higher than 930 MHz, when it is warm.
So I can start the computer, run Windows, run some test, observe temperatures, check stability, all is stable, ok, but when I want to restart machine, it can't start. I must switch it off, wait several seconds then switch it on again.
So I'm now at 910 Mhz, where computer can run stable and always starts.
I got descriptions of L7... it is possible to get 1.65V instead of 1.6. It may be sufficient for this CPU to boot. I will try this when I remove the cooler for lapping. I think, it will be next week.
And it is Duron 750, not 700... my error in first post.

[pik33]

[deleted double post]

[stool]

here is all the settings for Durons and TBirds http://www4.tomshardware.com/cpu/00q3/000711/index.html

[pik33]

Penciled L7
Now cpu can post even at 1 GHz (didn't try higher because of heat)

[el]

I am thinking of closing all the L7's and going straight for 1.85 any problems with that? Pik33 is that what you did or did you go for something lower?

[Justy303]

Closing all L7:s should not cause any trouble, as long as you check the temp.

[el]

Justy303 (May 07, 2001 11:07 a.m.):
Closing all L7:s should not cause any trouble, as long as you check the temp.
thanks justy I will try it tonight is your mobo kt133a? can you run it at 133x7.5? just thinking it would be better but I think your mobo is kt133. correct me on this one.

[Justy303]

Yes, that´s correct. I hate to admit it, but i bought my mobo some weeks too early (but thats always the case, isn´t it?)

[pik33]

I set default voltage at 1.8 V (penciled one of two broken tracks)
It is no problem with temperature when penciled L7, because this voltage is applied only when system starts, then mainboard sets it from BIOS. My problem was: computer had problems with start (POST) at higher speeds but when it started, it run stable.
I can run now at 1 GHz (133*7.5) but because of poor cooling CPU overheats and prime95 starts to fail.

[Justy303]

Yes, but if the L7´s are connected and bios vcore-setting is at default, then vcore will be 1,85 even after startup.

[!-=sky=-!]

hmmmmm
somehow my stupid duron 750 without pencil is doin with 1.888v
.....i checked the bios setting at it set at 1.6

when i set it at other volts, same thing.........so screwed........

[toutin]

I've been advised to do the pencil trick to my L7 to unleash my duron 700 oc capabilities but my mobo ,which have voice diagnostic, shouted "Please Clear CMOS settings" , so I had to erase my L7 traces.
Have anyone here had problems with their L7 linked? If no one maybe I'll retry (my pencil connections could have been bad).
I post here because I've seen that pik33 has a Soltek mobo (mine is a soltek too). So pik33 could you tell me if you get 'please clear...' after the pencil trick?

[el]

that Slovteck looks like a cool mobo! It even talks to you if it had MSI's lights with the talking it would be like Knight Rider's car KIT!!!!!! I haven't done the L7's yet maybe I'll wait to find out what happened or I just connect one of the L6's so it thinks the default is 7 instead of 7.5!! just an idea.

[pik33]

I have Soltek KAV, without a speaking chip (not KAV-X).
I hadn't any beeps or other effects after penciling L7.

[toutin]

ok thanks, I'll try to redo the L7 someday to see if there any improvements.