First Time OCer Phenom II x4 955 BE

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shaw24

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Feb 22, 2010
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I upped the CPU multiplier to 18.5 so I went from 3.2MHz to 3.7MHz and changed CPU voltage to 1.425V. Ran Prime95 for an hour and it seems stable with a max temp of 59* (not sure if it makes a difference but it's 90 today and probably close to 80 in the room with my PC). I feel pretty good about the boost but still want to play around with voltages and trying to get a better temp.

The thing I'm really not grasping is what to do with the memory. I've read I need to change it or lower the speeds but it's confusing to me. On the memory tab of CPU-Z it says my DRAM freq is 669MHz...I have 4GB of DDR3 1600 though. Can someone help me out with the memory part of OCing.
 
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chris987

chris987

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about the temps ensure you always stay below 60c for the cpu. as for the ram since cpu z says 669 * 2 = 1338Mhz since its DDR (double data rate) which most probably is your memory SPD speed . what specific memory kit and mobo do you have? get into bios and manually set your memory rated speed(1600mhz as you say). no need and better not try to further increase Mhz of you ram
 
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shaw24

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Ahh makes sense about the memory!

Mobo is GA-MA790XT-UD4P
Memory: 2 x 2GB G.Skill Ripjaws http://www.newegg.com/Product/Product.aspx?Item=N82E16820231303

1600MHz is good for me, I don't even want to mess with trying to OC that at all. I would like to try and further perfect my CPU overclock though including getting the temps down. Any suggestions? Should I try to lower voltage back to 1.4V?

 
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chris987

chris987

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i gues that 80-90 refering to the room temp is on Fahrenheit. that would be 27 and 32 celcius. quite hor actually, make sure you have plenty of airflow in your tower. you can lower voltage to achieve better temps but ensure stability through stress testing.as long as you stay below 60c you are ok. a nice mobo you got. you must set in bios the specific specs
1600mhz Timing 7-8-7-24-2N Voltage 1.6V

 
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shaw24

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So I just changed the memory speed from 1333 to 1600 and saved changes in bios now my computer won't do anything!! It turns on and I get fans but no image on display, no audio beeps, nothing. I can't even get back into Bios. Please help!!!
 
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chris987

chris987

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setting only speed wont suffice. i believe there is dram configuration option and dram voltage control somewhere in bios. change speed as you did at 1600mhz set 7-8-7-24-2T timmings and increase voltage to 1.6V the following video will help you find settings Gigabyte MA790XT-UD4P BIOS clearing cmos will get you running again.! refet to mobo manual for proper procedure!
 
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shaw24

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So I tried a few things and I have no problems when I change the speed from 1333 to 1600, I run into problems when I manually set the timing to the correct setting (7-8-7-24-2T), that's when it won't boot up. It's autoset to like 9-9-9-24-- Any ideas?

 
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chris987

chris987

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ensure you are running 1.6v. if you are then loosen timing a bit. try (7-8-8-24-2T) or (8-8-8-24-2t)
 
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