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System wont boot once i increase mem clock value!

post #1 of 12
Thread Starter 
Hey oc.net, still relatively new to overclocking so sorry if its is kind of a newb question.

I just recently oc my 1055t and finally got it running stable at 3.81 ghz with my ram clock speed at 200 for a ration of 1:1.

Now that my OC is stable, i decided to increase my ram speed a little, but i found that any change (either faster or slower) to my memory clock value causes my overclock and over voltage to fail.

Whats the culprit here!
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post #2 of 12
Maybe a bios safety setting
    
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post #3 of 12
Your memory probably doesn't like being overclocked. I'm running my 2500k @ 4.8ghz with stock ram speeds. When I try increasing my memory speed, which I have to do in preset increments, my computer fails to boot. Some RAM just doesn't like being overclocked. You can try increasing your DRAM voltage slightly, but this didn't help for me. From previous experiences, I found that basic grade RAM doesn't like being overclocked. If you want to overclock your RAM you're going to need to dish out more money for RAM that's marketed to overclockers.
post #4 of 12
Reset your bios thumb.gif
post #5 of 12
Thread Starter 
i gave the ram a tiny bump in the voltage and my computer stopped booting up. Only a black screen appeared... couldnt even get into the bios. I then reset my bios and tried to go back to my original settings..... i cant even get it stable at 3.5 now frown.gif
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post #6 of 12
Thread Starter 
alright i finally got it back up to 3.8ghz. Doing stress test as we speak. I clocked the memory back down to 200 for now.

here is some more info

data sheet for the ram im running
http://www.valueram.com/datasheets/KHX8500D2K2_4G.pdf

I tried to set the timings to match the data sheet (5-5-5-15 1.8v) and that didnt work to well. Had to reset my bios again. i think i picked dct0.. is that correct? Ram is such a new topic for me. I have no idea what im doing here.

ramqs.th.jpg
spdm.th.jpg

how can i get this to 800/1066 (from what i have read, stock is 800, but can be oc'ed to 1066 )
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post #7 of 12
Set your timings and memory voltage manually to match what they're supposed to be at 400MHz. Maybe bump your CPU-NB voltage a tad or two. Get your NB up to speed too though, 1800MHz NB is too low. With a 1055T, you should be able to reach 3.0GHz.

How did you get DDR2-400 with an overclocked CPU though, that's what I'd like to know. You can't POSSIBLY have a 200Mhz reference clock with an overclocked 1055T. The 1055T is a locked multiplier, so you must raise the reference clock. This makes no sense....

Also, you're on a 4+1 power phase motherboard. Running a Thuban at bone STOCK is a stretch for that motherboard, let alone a 1GHz overclock on it. You really should consider toning it back down to stock or less until you can get a better motherboard.
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post #8 of 12
Thread Starter 
wow... that is weird. Since i have my mem clock at 200 for 1:1, it should be my fsb speed right? CUPID is telling me my fsb is at 200 and my core speed is at 3.8 with a multiplier of 14. strange indeed.

How do i find out what my timings and voltages are suppose to be at 400?

What kind of risks are involved if i keep it oc'ed at 3.8 on this mobo?!

Also i am pretty sure my nb freq is at 2448. (272x9). The max multiplier is x10 on this mobo. Should i put my nb freq to 2720?
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post #9 of 12
Quote:
Originally Posted by Cloudpost View Post

wow... that is weird. Since i have my mem clock at 200 for 1:1, it should be my fsb speed right? CUPID is telling me my fsb is at 200 and my core speed is at 3.8 with a multiplier of 14. strange indeed.

How do i find out what my timings and voltages are suppose to be at 400?

What kind of risks are involved if i keep it oc'ed at 3.8 on this mobo?!

Also i am pretty sure my nb freq is at 2448. (272x9). The max multiplier is x10 on this mobo. Should i put my nb freq to 2720?

According to CPUz, you're at 200 reference clock, not 272. Care to show the CPU tab, memory tab, and SPD tab as it sits now?

As far as NB clock, the higher you can get it the better. Timings and volts are on the SPD tab.
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Ol' Trusty
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post #10 of 12
Quote:
Originally Posted by pioneerisloud View Post

Set your timings and memory voltage manually to match what they're supposed to be at 400MHz. Maybe bump your CPU-NB voltage a tad or two. Get your NB up to speed too though, 1800MHz NB is too low. With a 1055T, you should be able to reach 3.0GHz.
How did you get DDR2-400 with an overclocked CPU though, that's what I'd like to know. You can't POSSIBLY have a 200Mhz reference clock with an overclocked 1055T. The 1055T is a locked multiplier, so you must raise the reference clock. This makes no sense....
Also, you're on a 4+1 power phase motherboard. Running a Thuban at bone STOCK is a stretch for that motherboard, let alone a 1GHz overclock on it. You really should consider toning it back down to stock or less until you can get a better motherboard.

I too am confused now. That 1055 is locked, so you have to be increasing Bclk in order to get anywhere with that CPU.

Remember that some bios have what I call bus clock holes. Got to figure out the characteristics of your particular board. Sometimes they just do not boot up when it is touched until after a certain value. Also, you should be able to cahnge your ram multi to get it up a little higher than 400 MHZ.

Just like Pioneer mentioned, that 4+1 is just begging to blow up in your face, so be extra careful while overclocking. I would aim for a 3.3-3.4 Ghz overclock, and work on the NB OC. Then move on to the Ram timings, and get those pretty tight.
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Hard DriveHard DriveHard DriveOptical Drive
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