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I7 950 overclock memory problems

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February 18, 2010 3:46:07 AM

I just purchased the Venomous X heat sink for my rig...and was trying to overclock the i7 950. I followed the tutorial posted on Tom's....I changed the multiplier to 20 and set memory to lowest setting 2:6. Started increasing CPU freq and restarting like it said...I got to where it blue screened...blah blah...my settings that were stable (at least let me into windows no problem) was 190 x 20=3.8ghz and vcore was at 1.16875 volts. I then tried to change the memory back to 2:8 and voltage to 1.65 volts (like the tutorial said) and I keep getting blue screen or nothing will load up. My digital message board on the motherboard has error code A1. So i then have to restart cmos and start over again. I never messed with the qpi or anything because i was just trying to be stable at around 3.8 to make sure my temps are nice and cool. I thought increasing qpi just let you get a higher overclock which I don't want...is that correct? I don't really have the need to go to 4.0 and above...Am I doing something wrong?? or how else do I get my memory back up to around 1600?? any help would be great...I've never overclocked before and have no clue what I'm really doing...also...I've read a bunch of stuff on people arguing about ram voltages at 1.65 and if it would void warranty and if its safe...so is it safe?? the argument seems to go both ways....thanks in advance for any advice you can give me...

February 18, 2010 3:49:29 AM

so apparently all of my specs arent showing up in my signature... here they are

Evga x58 classified 3xsli
corsair dominator 1600 3 x 2gb
evga nvidia gtx 295
intel i7 950 do
venomous x
cooler master haf 932
western digital 2 x 1tb black

thanks again
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a b } Memory
a b K Overclocking
February 18, 2010 4:31:08 AM

Hi archie,
make sure your uncore multiplier (located on the main overclocking screen in the bios) is set to 16 or 17 when you raise the ram rario. Remember that uncore must be 2x the clock of the dram.

As for setting your dram voltage to 1.65, this is not safe because the classified board overvolts the memory by .04v so the end voltage is 1.69v. Unless you have increased the vtt to +50mv (or more) then you will want to drop the dram back down to 1.61v.

Hope that solves your troubles.
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February 18, 2010 3:42:11 PM

overshocked said:
Hi archie,
make sure your uncore multiplier (located on the main overclocking screen in the bios) is set to 16 or 17 when you raise the ram rario. Remember that uncore must be 2x the clock of the dram.

As for setting your dram voltage to 1.65, this is not safe because the classified board overvolts the memory by .04v so the end voltage is 1.69v. Unless you have increased the vtt to +50mv (or more) then you will want to drop the dram back down to 1.61v.

Hope that solves your troubles.


Thanks a lot...I set the uncore to 17 and I can boot into windows...my mem voltage is at 1.52. The ratio is at 2:8...I left the timings and everything on auto and they say 11 11 11 28.....is this correct? also...the ram is only running at 1067? If I bump the ratio up to 2:10 will it be faster...or how do I get it closer to 1600....I know its all based on the multiplier but this is the part that always confused me...also If i am supposed to bump it up to 2:10 do I increase the dimm voltage until its stable? Just in case your wondering my bclock is at 190 x 20 and voltage is at 1.6875. I have the option to take the multiplier higher up to 23....or should it be at 20?
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December 19, 2010 11:45:53 PM

your v core is way to low. 3.8 at 1.16 may work with ultra low ram settings but realistically it will need to be up around 1.3 in the end. im stable at 3.7 with a vcore of 1.23 but as soon as i get over 3.8 it needs at least 1.3. Aslo you will get better voltage if you stay on an odd multiplier
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