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[Info] - Intel 2500k/2600k Overclocking Tips - Page 87

post #861 of 1151
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post #862 of 1151
Quote:
Originally Posted by goldknight View Post

Memtest showed all of my RAM as good. I then reset the BIOS to stock, put only two sticks of RAM in, and ran Prime and all of the workers stayed running. Should I just bump the DRAM Voltage to try to stabilize it? They're rated for 1.5V. BIOS is set to AUTO and reads them running currently at 1.521V.

try setting vccio at 1.1v
i had to set my 2x 4gb vengeance at 1.525v to run stable. i really do believe that ram needs a bump in vdimm to be stable. quite a few people i know personally with asus boards had xmp set vdimm at 1.525v
what other voltages have you adjusted?
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post #863 of 1151
Quote:
Originally Posted by pc-illiterate View Post

try setting vccio at 1.1v
i had to set my 2x 4gb vengeance at 1.525v to run stable. i really do believe that ram needs a bump in vdimm to be stable. quite a few people i know personally with asus boards had xmp set vdimm at 1.525v
what other voltages have you adjusted?

I haven't changed any other voltages except setting the speed to 1600MHz since it was defaulting to 1333MHz for some reason. I wanted to get it to run stably with all 4 DIMMS in before I started messing with the cpu voltages.

Set the DRAM Voltage (which I assume is the vdimm you're talking about) to 1.525V, and set the VCCIO to 1.1V. Ran Prime95 with the 1344 test and random workers still stop immediately.
post #864 of 1151
Quote:
Originally Posted by Kozanitis96 View Post

Try setting the ram at 1.5v manually or use the xmp profile is your ram supports it.

I thought about trying the xmp profile, but couldn't find anywhere to use it on this board.
post #865 of 1151
Didn't touch the VCCIO. Bumped the DRAM voltage to 1.5375, 1.55, then 1.5625. Workers still stopping randomly immediately after starting the torture test. I don't want to mess up my RAM by going too high. Is there a point where it starts to get dangerous for the RAM?
post #866 of 1151
xmp is under ai overclock tuner in the ai tweaker tab. xmp isnt always the greatest to use because it adjust timings and speed and vdimm( ram voltage yes) but not the vccio which it used to older chipsets.

did you buy a 4 stick kit or 2x 2 stick kits?
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post #867 of 1151
Quote:
Originally Posted by pc-illiterate View Post

xmp is under ai overclock tuner in the ai tweaker tab. xmp isnt always the greatest to use because it adjust timings and speed and vdimm( ram voltage yes) but not the vccio which it used to older chipsets.

did you buy a 4 stick kit or 2x 2 stick kits?

One 4 stick kit. Tested up to 1.6125V now and still have workers on strike. smile.gif
post #868 of 1151
Thread Starter 
Quote:
Originally Posted by Aesthethc View Post

Hey guys so i tried to do 5.0ghz today at 1.48v, wouldnt boot without enabling Internal PLL Overvoltage (is this safe?). Failed Intel Burn Test at that voltage so i decided not to try going up any higher. Getting closer and closer to 1.5v makes me cringe...

I also tried 4.9ghz at 1.45v with no PLL Overvoltage, and it boots but fails Intel Burn Test.

The only stable OC i can get now is 4.8ghz @ 1.42v. I originally had it at 4.8ghz @ 1.38v but over the course of a year and a half ive been slowly increasing my voltage for a quick remedy to BSOD 124 (raise vcore).

Each time i raise voltage by 0.01v after a BSOD 124, i pass an 18 hour Prime 95 test. So i guess that is my main remedy to BSOD 124.

So what do you guys think, this chip cant achieve 5.0ghz unless i go 1.50v and above, and it will require at least 1.47-1.5v just for 4.9ghz..... So should i just sell this chip and see if i can get my hands on another one? Whats the "average" voltage needed for a 5.0ghz OC? Im not expecting my chip to be golden or anything, i have 120.6 in radiators and plan on doing 120.10 but heat isnt even a problem because i cant even OC to 5.0ghz....

Frustrating.

Some cpus just wont run past a certain speed, I had a 2500k that would only do 4.7ghz at 1.39v, it wouldnt go higher than that regardless of the voltage. Also turning CPU PLL Overvoltage on is safe; you sometimes need to turn this on for high overclocks to boot into windows.

Quote:
Originally Posted by goldknight View Post

One 4 stick kit. Tested up to 1.6125V now and still have workers on strike. smile.gif

Are you using latest version of prime95? What overclock are you going for btw?
post #869 of 1151
Quote:
Originally Posted by $ilent View Post

Are you using latest version of prime95? What overclock are you going for btw?

Yep. Latest version of Prime95. Not trying for anything just yet. I just want to get the 1344FFT test to run while I have all 4 sticks of RAM in at stock speeds. With just two it works fine.
post #870 of 1151
If 2 sticks work good and 4 sticks dont, it just means the IMC cant handle the ammount of memory + speed.

Only way to fix it is to up the VCCIO or perhaps DRAM Voltage.

If you allready set the DRAM Voltage to 1.625v you know it isnt that, so it can only be the VCCIO.

Some Sandy CPU"s just have incredibly weak Memory Controllers, nothing to do about it.
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