Can't OC Q9300 any higher?

jman07_93

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Mar 30, 2008
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If I overclock, the only things that there are to change are the FSB, the multiplier, and the voltage right? Just those three things? Because for some reason no matter what I do I can't OC any higher than 3.0Ghz. I just change the FSB and leave the multiplier at 7.5. When I try it, my system boots up and right after the motherboard post it shuts off, then it boots back up and automatically sets it back to 2.5Ghz. What is causing this? And also when I OC it changes the RAM from 800Mhz to something higher and I can't change it back to 800Mhz. Like if I try to do 3.5Ghz it changes my RAM to over 1000Mhz. And I can lower it but only to about 900. What do I need to do to fix this?

Specs:
Q9300
Gigabyte GA-P35-DS3L
MSI NX8800GTS 512
OCZ 4gb (2x2gb) DDR2 800 Dual Channel
 

BlackKnight7891

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Feb 27, 2008
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you should be able to unlink your ram from your cpu preventing it from ocing or change the ratio. so that the ram is slightly underclock. otherwise you should beable to change the ram multiplyer lower it your ram wont oc much more then 900mhz and thats whats preventing you from going higher
 

jman07_93

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but i've tried runing RAM at 900mhz and i upped the voltage all the way to 1.3v and it still didn't work. so do I want to unlink my RAM or not?
 

eklipz330

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Jul 7, 2008
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im able to achieve a higher overclock with a slightly lower multiplier, and higher fsb on my core2duo...
and your ram is trying to stay 1:1 with your fsb...im assuming you increased your bus to 500?
 

zenmaster

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#1 - You need to make sure you RAM is set to a 1:1 Ratio. It should be running at 667 Speeds before you start to OC. It should only hit 800Mhz after you have hit about 3.0Ghz.

#2 - As you take your RAM far past 800Mhz, you will likely need to increase your RAM voltage. Heck, you may even eed to increase it to make it hit 800Mhz depending on what it's default Voltage rating is. Make sure the Voltage is set to at least what the RAM recommends for 800Mhz operation.
 

ferencster

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Hy i have the same board and same cpu but a can`t get higher than 394 fsb witch is 2950 mhz for the cpu. How did you get 3000 mhz, what settings do you use???
 

Craxbax

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Did you reflash to the latest bios? Also make sure that you up your NB voltage. 4gb of memory places a lot of stress on the NB. Sometimes putting a small fan blowing across the NB helps if you find it too hot to touch With the latest bios for the 45mm quads you should be able to get 450-466 FSB (3.3-3.5 ghz) on a DS3L. Here are a couple of guides to help you work through this:

http://www.ocforums.com/showthread.php?t=515316
http://www.hardforum.com/showthread.php?t=1169366