AMD 2800+ need help oc'ing

BriSleep

Limp Gawd
Joined
Mar 17, 2006
Messages
165
Does anyone know about oc'ing this processor (see sig) with this mobo V1.6? When I increase the multiplier the system boots up saying it's at 833mhz. Does that mean the cpu is locked? Is there a fairly easy way to unlock it if it is locked? I've been told that changing the fsb to 200mhz could fry this board so I'd rather just try it by the multiplier if it's possible.
 
An A7N8X should clock to 200MHz FSB no problem, assuming your memory will run at that speed (PC3200 is the slowest rated ram for a 200MHz FSB).
 
No, that's one of the problems, most of the ram is pc2700. If I did it that way I'd only have 512mb of ram that would work. It's sounding like I'm not oc'able.
 
unless the proc is locked drop your multiplier down to 9 or 10, then bump your fsb up to 200 check for stability if its stable you can try raising your fsb till it doesnt pass testing then drop it back say 3-5 and try bumping your multi up, athlon xps are easy just keep a close eye on your temps.
 
What is the stepping and date of the Chip? that will help us know if its unlocked or not and if you can unlock it..

Wait? its a mobile? Then of coruse its unlocked. The reason it saying 833Mhz is because its failing to overclock and booting to a bios "safemode" When you up the multiplyer.. only up it one notch (.5) and see what happends, if it dosnt post or boots extreme low Mhz try incressing the voltage a tad.


At your own risk, make sure cooling it good for it. (stock=not good)
 
Nope it's not a mobile. I don't think anyway. I have an alpha cooler, it's kinda old but much better than stock, it's lapped smooth and have AS3 on it. Cpu-z says: Barton, socket A, .13um, 1.664 volts, family 6, model A, stepping 0, ext family A, ext model A.
Bumping the multiplier up to 13x makes it an 833Mhz, up to 13.5 makes it a 914mhz, then when I went to 14 the whole system locked up and I had to re-set the bios. Does this mean it's locked because it drops down when I try to run it faster? Is this one of those I can alter with a pencil? I'll try the setting it to a lower volt, higher multi tomorrow a.m.
It doesn't say a date, the copyright date is 1999 but on the AMD board someone said it was made in 2003, that sounds right for the date I bought my 2500+ at and this is a 2800+. I have all the numbers on it's face if that helps?
 
yea that CPU is locked so changing the multiplyer will not work (or in your case run it at its lowest multiplyer)

FSB clocking if for you my friend.. or unlcoking the chip... ill get you more infor when i have time
 
BriSleep said:
I've been told that changing the fsb to 200mhz could fry this board so I'd rather just try it by the multiplier if it's possible.
whoever said that is a bit odd in the head. i have an a7n8x and a 2500+ baron that runs at 220mhz fsb almost 24/7 for the last.. 4 years?

what is the fsb set to now?
 
if you have a 2800+ barton and you are running sub 1Ghz your FSB is underclocked to start out with, its prolly set at 133 (266, Pc-2100) do you have a stick of PC-2100 ram in that compuer?


like i was asking before can you drop the muliplier? i have the same cpu/mobo setup as you and its been runnin overclocked since i bought it. i think you should pull that 256 mb stick out and just run 1gb in dual ddr one stick of ram for each controller.. these mobos are sometimes very picky about ram matters when it comes to overcloking and you wont even miss that 256 stick

drop the multi down to 10 or 11.. mine is 11, then start raising your FSB.. you dont really want to OC your proc using the multiplier because all you are doing is making hte cpu itself faster.. well if you raise the FSB and drop the multiplier you can still keep the cpu speed but now its connection to everything else is much faster and thats the chokepoint on these procs.

you should be able to do 11x200 no problem stock just install MBM5 and keep an eye on it


PS look at my sig if your still wondering about if these boards can handle 200FSB.. this is my third Azn8x-d board.. they are all still running perfectly fine too and oth this one the Ver 2.0 and the 1.6 have run 200+Mhz fsb.. the 1.4 is good too but i never ocd it had a crappy locked thoroughbred that i never felt like messing with.
 
I have 2 stick of DDR 333 ram and 1 stick of DDR 400 ram, so I'd have to upgrade the ram first. I don't want to do that because I might have to use the money to save for my new system in the long run. I'm going to try uping the fsb now and will post if I have a success.

-edit- No, it didn't work, I changed the jumper for the fsb to 200mhz and it wouldn't come up with 200, it just kept showing 100, 133 & 166mhz, increasing the multiplier at any of these settings showed speeds well below the normal 2083mhz. For a proc that's supposed to be easy to OC, I'm really not getting anywhere close to a speed above or even at 2083. Anyone know what's the deal? Do I need to clear the rom bios clock when I change the fsb jumper? Has anyone actually done this with this mobo or is it maybe that the cpu is locked? Anyone?
 
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