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CPU and RAM Overclocking

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February 20, 2014 12:20:57 AM

I am getting Blue Screen of Death(BSOD) when I OC my DRAM frequency to 1066mhz.
My PC specs is:-
Core 2Quad 2.4 ghz Q6600
MB-Asrock G41M-VS3 R2.0
RAM-6 GB(4+2)DDR3 Micron 1333mhz

I am using my RAM at 800mhz, If I have to use it at 1066mhz or 1333mhz.I change the DRAM freq. in BIOS and then when I start my windows I keep getting BSOD. My cpu to Ram ratio is 2:3 how can I achieve stable 1:2 or 1:1 ratio.

More about : cpu ram overclocking

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a b K Overclocking
a c 116 à CPUs
February 20, 2014 12:34:04 AM

its likely you havent put enough volts on the ram when you oc'd it. check the manufacturers spec it may be that you need to run it at 1.9-2.2v.
you can do this 2 ways, the manufacturers site or using cpu-z. in cpu-z the ram frequencies timings and voltage requirements for them timings should be shown under the spd tab.
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February 20, 2014 1:24:13 AM

HEXiT said:
its likely you havent put enough volts on the ram when you oc'd it. check the manufacturers spec it may be that you need to run it at 1.9-2.2v.
you can do this 2 ways, the manufacturers site or using cpu-z. in cpu-z the ram frequencies timings and voltage requirements for them timings should be shown under the spd tab.


Hey!Thanks for the quick reply! :)  The problem is that I have combination of 4gb Hynix + 2gb Micron,which manufacturers spec I should consider for the voltage?
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a b K Overclocking
a c 116 à CPUs
February 20, 2014 3:14:28 AM

thats your problem rite there. your ram is conflicting with the memory controlers timings.
because your using different sticks they will likely have different jdecs the mmu will read these for each of them and try to strike a balance. by doing this your stressing both the ram and the mmu. eventually 1 of them will fail, either completely breaking the mmu or the ram, causing random offs or just failing to post.
you have a choice though... if your motherboard supports it, you may be able to set each ram sticks latencies separately then match there overall speeds... this again will stress the mmu but at least its not as bad as letting it try to do the latencies on the fly... its still unlikley that you will be able to oc them successfully but they should be stable.

check the ram with cpu-z and write down all there jdec info. you should se 3 or more sets of jdec timings if its branded ram. if its not there will be only 1 set of jdecs.
if you cant match any of them at a given speed then forget it. pull the 2 gig module and use the 4 gig till you can get another of the exact same make model and spec.
if you can match all the timings in 1 row then go into bios and set them up manually to that speed and that latency only. then set the speed to the slower jdec ..
so for example if you can match the first jdec on stick 1 to the second jdec on stick2 then set tmen manually then choose the slower speed of jdec's you chose as the running speed of the ram

if 1 set says 2.0v but the other is 1.9 then run them both at 2.0 as long as you have heat spreaders. if they dont then try the 2.0 ram at 1.9 and hope it stays stable.
but like i say its not good to mix and match ram. the best your likely to get is stable operation IMO..
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February 20, 2014 10:30:42 AM

HEXiT said:
thats your problem rite there. your ram is conflicting with the memory controlers timings.
because your using different sticks they will likely have different jdecs the mmu will read these for each of them and try to strike a balance. by doing this your stressing both the ram and the mmu. eventually 1 of them will fail, either completely breaking the mmu or the ram, causing random offs or just failing to post.
you have a choice though... if your motherboard supports it, you may be able to set each ram sticks latencies separately then match there overall speeds... this again will stress the mmu but at least its not as bad as letting it try to do the latencies on the fly... its still unlikley that you will be able to oc them successfully but they should be stable.

check the ram with cpu-z and write down all there jdec info. you should se 3 or more sets of jdec timings if its branded ram. if its not there will be only 1 set of jdecs.
if you cant match any of them at a given speed then forget it. pull the 2 gig module and use the 4 gig till you can get another of the exact same make model and spec.
if you can match all the timings in 1 row then go into bios and set them up manually to that speed and that latency only. then set the speed to the slower jdec ..
so for example if you can match the first jdec on stick 1 to the second jdec on stick2 then set tmen manually then choose the slower speed of jdec's you chose as the running speed of the ram

if 1 set says 2.0v but the other is 1.9 then run them both at 2.0 as long as you have heat spreaders. if they dont then try the 2.0 ram at 1.9 and hope it stays stable.
but like i say its not good to mix and match ram. the best your likely to get is stable operation IMO..


If I use only the 4GB RAM it still gives BSOD. What DRAM voltage for 4 GB RAM I should use and my CPU temp. is going around 50-52C...is it safe...???
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a b K Overclocking
a c 116 à CPUs
February 21, 2014 11:42:24 PM

if 52'c is your max temp then its fine, if its your idle temps you have issue.
check your jdecs with cpu-z it will tell you what volts you need for that speed ram.
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