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manny2326

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Mar 9, 2009
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Hi guys this is my first post and sadly its about a problem 🙁

First i will post my system info.

MB-P5ND.
CPU-Q9450 with Bigwater 760i cooling system.
RAM-OCZ6400 4GB.
VIDEO-9800GTX.
PSU-BFG 550W.
HD-Hitachi 500GB.
Windows XP Home.

Well the problem started yesterday about 5 hours after I installed the Bigwater 760i water cooling kit which is pretty good. 41*C idle and 56*C load.
I was able to run stable at 3.2Ghz with 400Mhz FSB thats the max FSB that i could run with this motherboard for some reason without having stability problems. After playing for a while some Call of Duty 5 and FSX my system crashed. After the crash I could not even get into the BIOS so I removed the battery from the botherboard and everything reseted. I started system again and I got into the BIOS left everything to default to make sure that windows loaded fine but windows would not load I was getting memory dump blue screen of horror. Five minutes into this the system would not post anymore I could not get into the BIOS again. Reseted everything again and got back into the BIOS this when on for a while until I started to go nuts and I had to mess with the voltage to see if I had a voltage issue. To make the story short after trial and error I was able to get into windows with a vcore @1.33 which is 1.36 in bios and VTT@ 1.44 North Bridge is on auto but I was runing it at 1.60 for stability when i was overclocked to 3.2 otherwise system would crash. Now my question is this. What do you guys think that the problem is here.. a bad CPU? or a bad motherboard or a combination of both. Right now the system is running but i know that with that VTT it wont last long. I cant do any heavy load because system will crash. Keep in mind that this is at stock clock speeds. 1333FSB 2.66Ghz default memory timings and voltage. by the way the temperatures now are at 41*C and at load they reach 56-58*C before system crashes. Please guys help me figure this thing out. Thanx! :cry:
 
i don't think it is your cpu. it could be your motherboard or ram. try knocking your fsb/cpu multiplier down more. you should also try running memtest (http://www.memtest.org/).

download it to a CD from a working computer. put the CD in your problem computer. change the boot order in your bios from your hard drive to CD-ROM. reboot and let memtest run a couple passes of your ram. if it works fine, raise your fsb and try again. keep going until it raises errors or the system crashes. if it shows errors, the problem is your ram, if it crashes before the ram shows errors, it is either your mobo or your cpu.
 



Hey thank you so much for the quick replay! I will download the memory test and run it.. The system has not crashed in over one hour and half. stock clock speeds I ran prime95 a couple of times for about 10 minutes to load it up get decent temperature. i am seeing some voltage drop on the asus monitor in windows the +5v dropped to 4.97 a couple of times giving me a warning. i also say my cpu temp go up to 250*C on the asus tool but realtemp 3.0 shows steady (core1-36* core2-28* core3-40* core4-39*) I think that my motherboard might be bad =( will try the memory test none the less. thanx again! 😀
 
I just did the memory test and my memory is good. I think that this friday i will pick up another motherboard and start from there. what is the best (price/performance/price) sli mobo that i can get for my q9450 (775) overclocking friendly ofcourse hehe. After i get the board if I still have problems i will try to get an unlocked quad core.
 
my mobo is the ASUS P5Q-PRO
i bought it here
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131299&Tpk=p5q%20pro
i overclocked my e8500 to 4GHz (445 * 9 ) with this board. now that i have looked at it again, it has gotten cheeper since i bought it. infact, it is less expensive than your board. if i were you i would try looking into RMAing your board before attempting to get your hands on another board.
i'm still not sure weather its your cpu or mobo causing the problems. you should try to find out before you buy another mobo. here's how You figure it out:
■to stress the CPU more than the mobo, set the cpu multiplier to the upper limit and work the fsb up slowly. the CPU will still get OCed, but the mobo wont have to work as hard. if you see serious problems here, its the CPU
■to stress the ram more than the CPU or mobo, set the multiplier lowest and work the FSB up. you said that you couldnt get the FSB past 400MHz. this is probably because your ram. put your fsb at 400 then do a round of memtest.
■to stress your mobo, set your FSB:RAM ratio to 2:1 ( or vice virca, depending on how your bios setting has it), set the multiplier to the lowest and crank the FSB to the limit.

any serious weakness on these tests can tell you where the problem is. make sure you do all of these tests before you draw a conclusion. be patient because this will take a while. and remember that just because you were able to boot into windows, it doesn't mean your system is stable, run prime95 for 30min-1hour to ensure stability.




by the way...

is that a temp typo?
 
I have the multiplyer set to 8*. This is a locked processor so i cant go over 8. Right now I have a fsb of 333 if I go over that the system becomes very unstable. I cannot touch the voltage on the north bridge now because system will not boot up. I believe that the north bridge should not have anything to do with the cpu. This is so upsetting and frustrathing I am just going to give up and leave the system like it is for now and im going to switch MB on friday i will also pick up some high end ram for it. Computers are worse than women lol they drive a men crazy sometimes hehe
 
ok, just make sure that next time you try to OC, you give the CPU a voltage ( as in dont leave it on auto ) because the mobo will over compensate the voltage. just start at a safe low and bump it up when you need to increase system stability.
 


yep hehe there is always a first time =b
hey thanks alot for your support i realy apreciate it.
 
:bounce: Guys I am soooooo happy tonight! earlyer today while at work i manage to make a stop at my local tiger direct and picked up a new motheboard.. 750i FTW. and this thing is AWESOME!!!!!!!!!!!! ROCK SOLID!
im running at 3.5ghz with out a problem.. vcore voltage is at 1.33 super stable had not crashed in over two hours of gaming and one hour of prime 95. EVGA 😍 i will just enjoy my games tonight still have to install world of warcraft =/ i hate that installation because is about 15 cds lol. tomorrow i should be able to hit 3.66 ghz which is my target clock and i will let you guys know how it goes. i will also make a sig to show all my specs. =b
 
cpu temp is under 33-36*c idle and under 50*c under load. before i installed the new motherboard i did major modifications to the case lol the little water radiator is getting only 100% outside air and it has loawered temperatures a whole lot.
now only thing im wondering is how safe is it to run 450mhz fsb on this board. i know i can push it more but im scared of damaging something. im pretty happy as it is not tho. 3.6 rock solid
 


your system will show signs of instability before anything breaks. idealy, if you had to choose an overclock that was either high fsb/low multiplier VS low fsb/high multiplier ( assuming the overall speed turned out the same ) you would want the high fsb/ low multiplier. fsb effects the entire system ( eg ram/chipsets) while the multiplier only effects the cpu.

my mobo has a current fsb of 445mhz. to find the upper fsb limit for your mobo, set the multiplier to the lowerst possible value and crank the fsb to the edge of stability.

also, you mentioned that there was no longer air was going through your case, into the radiator. does this mean there is no air flow in your case. your chipsets NEED some kind of cooling. the mobo manufactures normally put passive heatsinks on but if there is no air flow, these heatsinks wont work properly and the chipsets will overheat. there are waterblocks sold for chipsets if you dont already have one. ram will also get toasty after a session of gaming, but that wont matter quite as much.
 
oh there is alot of airflow going to the case. the radiator fan is sucking air from the outside of the case now. i need to post some pictures but everything is there is cooled because there are more fans for the case.. i checked the temperature of the heat sink from the chipset nb and sb and i was at 98*f-102*f this was with my work thermocoupler. im sure i can hit 3.7 or 3.8 ghz with this setup but i will keep it at 3.60ghz for now i need a new videocard now. maybe a 280 or 295gtx.
 
your practically replacing your computer. if you seriously have that much money to burn, you can get a 295gtx, or you can get a radeon 4870x2 ( it has slightly lower preformance ) and save $100. ati graphic cards also have DDR5 where as nvidia has DDR3. this will give you a performance boost over the 295gtx if you turn up the AA.
 
hehe i dont like ati card to much dont get me wrong they are awesome. but im an nvidia fan. i really want a 295gtx but is the price that is keeping me away from it but maybe ill just go for it. ill need to get a 1000w powersupply becuase with whatever card i get i want to go sli evantualy
 
just relize that core two duos, DDR2 ram, and 500GB HDDs will be obsolite before you need to replace that card- because it is currently the most powerful on the market. you will get some serious bottlenecking from processor in a quad GPU setup like that (assuming that you sli later on).
 
you are right. heh ill just get a single gtx295 but i will still need to upgrade my power supply for it because from what i hear they need over 650watt psu at the very minimum.
 
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