View Full Version : Jumping The L5 on an Athlon XP 1900
jpkramer
11-02-2002, 2:31 PM
How do I jump the L5 on my Athlon XP 1900 so that BIOS recoginzes it as an athlon MP? I have a Tyan S2460 and don't want to spend the extra money on MPs.
Mntsnow
11-02-2002, 2:33 PM
Just a sec and I will find the link for you that shows how to do this very simply :)
welcome to XPC
Mntsnow
11-02-2002, 2:35 PM
You might check this thread out (http://www.hardwarezone.com/articles/articles.hwz?cid=2&aid=393&page=2) on what you do to the XP's to get them to run in SMP mode.
As for how I did the connection I used a conductive trace pen (http://www.partsexpress.com/pe/showdetl.cfm?&Product_ID=15213&DID=7)
If you have further question just holler :)
jpkramer
11-02-2002, 2:39 PM
thank you I will try it!!
Mntsnow
11-02-2002, 2:46 PM
No problem. Good luck!
:D See you got my e-mail jp, and made it over here!!!!
jpkramer
11-05-2002, 3:20 PM
I have two Athlon XP 1900 CPU's which have the correct circuits already connected on the L5 cache and I still can't get past BIOS, what is going on?
jpkramer
11-05-2002, 5:05 PM
Now I can't get my mobo to even post. Is it possible to just run a dual processor mobo one one XP with the proper jumping. I just bought a XP 2000 and don't have the cash for another one yet. Why do computers hate me with such a passion?
Mntsnow
11-05-2002, 5:43 PM
Yes if you put a single proc in the CPU "0" socket you will be able to run the board :)
When you say the 1900's already have the circuits connected and cant get past the bios can you tell us more of what's it doing? Is it not posting? is it not listing the cpu's correctly? or what?
Also are you SURE the correct L5 bridge's are connected? Where they done prior to you getting the cpu's or did you do it? If you did it are you sure you didn't cover up or cross connect the bridges? (they are super small and would be easy to do so!)
jpkramer
11-05-2002, 7:52 PM
The circuts were never disconected in the factory. The middle two are disconected and the outer two are conected. I used to be able to get to bios, but that was as far as i could get. Now I can't even get the monitor to turn on and post.
Mntsnow
11-05-2002, 9:42 PM
clear your bios using the jumper and then try it again.
btw Your 1900's must be first "gen" XP chips as all second gen xp's have the other L5 jumpers laser cut
btw what version of BIOS are you running on your board? the 1900 is the fastest cpu the board is officially supporting. I would suggest that you run the V1.04 version of the bios which was released 3/2002 (btw thats the version I run on my Tyan board with modded 1800's in use)
jpkramer
11-06-2002, 11:18 AM
So it wont support a XP 2000, I think i have the factory installed version of bios. I will try clearing the cmos when i get home. Is it possible to use a xp 2000.
Mntsnow
11-06-2002, 2:52 PM
I dont have any spare 2000's to put into my Tyan system and I dont think we want the site to go down so I can as the tyan box is the database server :D So my Tyan Dually is off limits now days for being used as a test bed lol
jpkramer
11-06-2002, 3:25 PM
I tried clearing bios but that didn't work. I still can't get any video output.
Mntsnow
11-06-2002, 5:40 PM
have you tried removing the vid card and trying a different one or making sure that the vid card is fully seated?
jpkramer
11-06-2002, 7:35 PM
yes i have
Try switching the CPU's around....
jpkramer
11-07-2002, 12:15 PM
I did
:confused: It's starting to sound like a mobo problem, not the cpu's themselves!!! Try using just one cpu, and see if it will fire up using one cpu first, the the other.
jadison
11-07-2002, 10:52 PM
Do you have any other compatible motherboards available to experiment with? If so, then try running those processors on it and see what happens.
jpkramer
11-08-2002, 1:12 PM
I do not. These CPU's are in working order.
Mntsnow
11-08-2002, 1:33 PM
If you dont have any other motherboard to try the chips in how do you know they are working?
jpkramer
11-08-2002, 2:03 PM
I have used them in other motherboards before I sold them about 2 weeks ago on ebay.
jpkramer
11-08-2002, 2:45 PM
I put the xp 2000 on the tyan s2460 and it recognizes it as a 1900 cpu. As I am writing this my harddrive is being formated with windows 2000 professional. This CPU has the L5 cache disconected.
Mntsnow
11-08-2002, 4:34 PM
Then it sounds as if the modded 1900's are damaged if a different cpu will work in the motherboard.
Remember I mentioned to you earlier that the 1900 is the fastest cpu that the s2460 will officially support and is the reason a 2000 chip is registered as an 1900
jpkramer
11-09-2002, 10:44 AM
I got past the Bios and installed windows 2000 on the hard drive, but this is the message I get, Windows 2000 could not start because of a computer disk hadrware configuration problem. Could not read from the selected boot disk. Check boot path & disk hardware. Please check the windows 2000 documentation about hardware disk configuration & your hardware reference maunals for additional information.
The Harddrive I am using is a seageteBarracuda ATA IV, I am borrowing this hard drive from a friend untill my IBM Deskstar gets back from the shop. What do think is the problem. And I don't see how the CPU's could be damaged seeing as they used to work and proper cooling was applied to them. I saw no signs of a burnt CPU. I think the problem was in CMOS once i put in the 2000 it wouldn't boot, but once i cleared CMOS it would. It might have something to do with the L5 on the 2000 being disconected and the 1900 wern't.
Mntsnow
11-09-2002, 2:22 PM
the 2000 is being seen as an XP which is what it is....the 1900's would be seen as MP's if the L5 bridge was intact.
The AMD cpu's are known to be VERY fragile meaning the cpu "die" or "core" is easlily damaged during a heatsink install or removal process. Check out the cpu's very closely after you have removed any heatsink grease and look for chipping or cracks in the core/die. If you find any you might have damaged the cpu's since last using them
jpkramer
11-09-2002, 2:37 PM
The 2000 being seen as an XP, is that why my computer wont boot. Read the first section fo the previous reply and tell me what you think that means
Thanks
jpkramer
11-09-2002, 2:42 PM
Holy ********, one on the edges of one of my CPU's there is about a mm of die gone, that is very ******. I don't know about the other one because I sold it, I will probably be hearing about that one. I didn't have this problem untill i installed those big honking volcano 9 heatsinks. This really pisses me off.
Mntsnow
11-09-2002, 7:59 PM
Sorry to hear that :( Yep This is one of the reasons AMD is not real high on my list. I love the performace of their chips but the chips are just to fragile!
64026402
12-01-2002, 9:27 PM
Originally posted by Mntsnow
Sorry to hear that :( Yep This is one of the reasons AMD is not real high on my list. I love the performace of their chips but the chips are just to fragile!
Most electronics require care. It is very easy to damage component if proper care isn't taken.
P3 Flipchips were made the same way. It gives the heat sink more direct contact for proper cooling.
An integrated heatsink like on a P4 is less efficient but easier for newbies to install. Less warranty if someone tries to crunch the CPU.
In 25 years I have never damaged a processor. So far AMD has the best record for longevity in the computers I build.
All I can say is my next build will be a dual Xeon. No more AMDs for me. I have enough and that heat issue drives me crazy.... lol
64026402
05-10-2003, 6:51 AM
Originally posted by NDC
All I can say is my next build will be a dual Xeon. No more AMDs for me. I have enough and that heat issue drives me crazy.... lol
Be prepared. The newer Xeons are using 70-80 watts so the heat problems aren't going to go away. I have received a lot of complaints about the noisy stock fans also.
I'll stick with AMD. Speeds are still going up. I can upgrade without changing MBs. Prices are still getting cheaper.
And 100% reliability from my little heard.
I have also cured the heat and noise problems on my machines.(with a little help from the Tbred cores)
mondobyte
10-05-2003, 10:59 PM
I'm preparing to Order XP1900's and use them as MP's after modding the L5 bridge ...
Are you suggesting that I may need to reconnect several L5 bridges on the newer chips or that they just won't work???
I'm running a couple of Swiftech MCX603s with 80mm 2900 rpm fans and this thing is cruisin now at 36C and 37C as I typed this message.
I'm happy I made the change. Photoshop runs so much better with SSE2 and HT enabled.
I sold off my MPX with dual MP2000+. I've had enough AMD based systems to see how they are and they're great and all, but I'll stick with Intel.. :)
vBulletin® v3.7.3, Copyright ©2000-2008, Jelsoft Enterprises Ltd.