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Check this out! Pentium D 920 at 5.04Ghz on AIR!

post #1 of 59
Thread Starter 
Okay well I was overclocking this chip and got to this point ( 5.04Ghz on AIR and only 50C ) and exited out of the bios to try and start in windows and the comp locked up and would not restart. I cleared the coms, unpluged everything that was not nessesary to start the comp..ie hardrives, cdroms, ect. Still nothing. I even took everything out and checked and powered it up to make sure nothing was grounding. If any of you have an idea as to what component went out please let me know. I did start the computer with no heast sink or fan just for a second or to to make sure the CPU was getting hot and it was...So I think its the board.

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post #2 of 59
Your RAM probably went to crap at that speed, did you have any divider on it?
post #3 of 59
Thread Starter 
Quote:
Originally Posted by RyGuy
Your RAM probably went to crap at that speed, did you have any divider on it?
I'm not sure but its ddr2800 I would think it can run at that speed without a problem. It was only over volted at 2.05. What is the max speed of ddr2800?
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post #4 of 59
Sorry, I'm not too familiar with DDR2 RAM or RAM in general for that matter, I just know that mine craps out at high speeds. I would give a divider a try anyways just for kicks.
post #5 of 59
Thread Starter 
Quote:
Originally Posted by RyGuy
Sorry, I'm not too familiar with DDR2 RAM or RAM in general for that matter, I just know that mine craps out at high speeds.
Neither am I as far as ddr2. If its the same as ddr it should have a divider of 2.
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post #6 of 59
DDR2 800? mmm should be fine with FSB = 400. Your MoBo however sets the RAM clock to it's max supported. If it has native support for DDR2 800, it sets the RAM to FSB = 400 (1:2 divider CPU:RAM). I sure do hope you OC'd on a 1:1 divider (setting RAM on 200MHz). If you did OC with RAM on 1:2, then RAM = toast.

However, some MoBo's refuse to post when the HSF is out. Is that running ok?
    
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post #7 of 59
What he means by divider is for the RAM to run at a certain ratio to the FSB speed. Try setting the divider in the BIOS to run as close to the RAMs original speed.
    
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post #8 of 59
Thread Starter 
Quote:
Originally Posted by Chozart
DDR2 800? mmm should be fine with FSB = 400. Your MoBo however sets the RAM clock to it's max supported. If it has native support for DDR2 800, it sets the RAM to FSB = 400 (1:2 divider CPU:RAM). I sure do hope you OC'd on a 1:1 divider (setting RAM on 200MHz). If you did OC with RAM on 1:2, then RAM = toast.

However, some MoBo's refuse to post when the HSF is out. Is that running ok?
I only took the H/S and Fan off to see if the CPU was warming when power was turned on. Just to make sure the CPU was working or atleast power was running through it. As far as the ram it was set to auto in the bios. So I am sure it would have run a divider if it needed to.
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post #9 of 59
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Quote:
Originally Posted by Christiaan
What he means by divider is for the RAM to run at a certain ratio to the FSB speed. Try setting the divider in the BIOS to run as close to the RAMs original speed.
The computer has no signal when it starts. It is not turning on nor is it able to get into the bios. I have tested the PCI card and it is working fine. So problem (I think) should be with the MB or PSU?
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post #10 of 59
OK, the MoBo should have run a divider...I agree. ~5GHz is an insane overclock though, and you could have fried anything (CPU, MoBo, RAM). Hard to trouble shoot what the culprit is. Can you try alternate parts from a friend or so?
    
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