Hi, I've OCed my 2500+ to 11x200Mhz for a few days now.. games and applications are working great, Only sometimes i have crashes.. sometimes when i'm just surfing a bit on the internet it just reboots! now warning or shutdown messages, just Poof! a black screen and it reboots.. I have this 3~4 times a day Is this problem relateted to my CPU OCing? my Vcore is now 1.65 wich should be pretty stable (Vcore on default settings 14x133Mhz is 1.45) Any help would sure be appreciated:)

The problem is most likely your vcore setting, its to low. Run prime95 stress test to insure that your cpu can handle any thing thrown at it. If you get errors while running prime95, stop the test and raise vcore a .25 volt then start prime95 again. Keep doing this until you reach atleast 8 hour prime stability (meaning no errors). I have a 2600 mobile 215x12 @ 1.9 vcore and i did not reach 8 hour prime95 stability until i hit 1.9 on the vcore. Make sure your watching temps. huh?

Hello, First of all i take it your CPU is a "mobile" becuase you stated that the Vcore is 1.45v ..also there is no default settings for a "mobile" CPU because mobo's dont recognise them. What you do is set it to 166 x 11 @ 1.45v Vcore... that is the default for a desktop xp2500 apart from the Vcore for which is 1.65v. As to your problem..... well not all cpu's are the same and as you have done the same as alot of people do with the xp2500..(run it xp3200 speeds @1.65v)..Not all of them like the 1.65v Vcore and what you have to do is up your Vcore slightly to say "1.7v" and although your memory is rated at DDR400 i would raise your memory voltage by 0.1 to help make it stable.... Also what are you memory timings set to...? becuase that can make your system crash also..? .......... Abit NF7s V2.0 Mobo Radeon 9800xt 256mb, xp2500 mobile @208x12.5, Antec true psu, 2X512 xms corsair Pc3500 in dual channel, Twin 10k Raptors (raided) waterchill cooled..

My 2500 mobile is running 210x11 with a vcore of 1.6v. Primed for 8hrs. The next time it crashes,check your temps in the bios. Tt Lanfire nf7-s v2.0 XP-m 2500@210x11 SP 97 512mb pc3200 Jou Jye 550w psu FX5600 WDCaviar 60gb Seagate Barracuda 80gb ;~}

Here are my memory timings: Ferq. 200.4 MHz ~ 200.5 MHz FSB:DRAM 1:1 CAS#Latency 3.0 clocks RAS#toCAS#Delay 3 clocks RAS# Precharge 3 clocks Cycle Time(Tras) 8 clocks My Mobile's default is: 133x14 instead of 166x11.. But with same Vcore (1.45) A 2500+ mobile should run stable at 200X11 @ 1.65v.. mine still wasn't stable at 1.75v

Btw, How can i change the memory voltage? I have a DDR Reference Voltage setting in my BIOS, is says 2.6V.. is that it?

just a quick question to indigian. i notice that your system is very simular to mine, did you have to do anything to your memory jumping from 200x10 to 210x11. Abit NF7s V2.0 Mobo Radeon 7500 128mb, xp2500 mobile @ 200x11.5, 1X512 crucial Pc3200, PA9C-42CU cooper heatsink