i5 2550k issue failing IntelBurnTest, even at stock speed

Toggle sidebar Toggle sidebar
P

Poewan

Junior Member
Apr 18, 2012
6
0
0
Hey folks! Im a bit baffled here, and in need of some guidance. First, I should mention that I have been out of the loop for a long while; the last system I built was about 5 years ago. Now, I was past due for a new box, and I built this box last week. Quick specs : i5 2550k, Asus P8Z68-V LE mobo, ati 7870 video card, 8 gigs of RAM (g-skill brand) running on windows 7 ultimate 64 bit.

I first conservatively overclocked the CPU, mainly letting the mobo auto adjust things since I didnt have time to bring myself up to speed ( ended up around the 4400 ghz mark ), and everything seemed to run pretty decently, if a bit unstable a times ( blue screened once or twice, some games would crash sometimes etc ). I didnt toy around too much with it due to lack of time. Now this morning, being off work, I decided to make this thing stable. I read up a bit on the details of how to overclock, and run IntelBurnTest to check stablity. Unsuprisingly with the OC I had originally, it failed. To make a long story short, after toying around and greatly reducing the OC, it kept failing that test...so I decided to run the IBT at stock speed, and it still fails the damn thing. Now im wondering if im missing something here regarding this test, or is it possible I have a faulty CPU or something? I disabled all 3 C-states settings in the BIOS, as well as intel speed step. Everything else is at default atm, including voltage etc. Any advice would be greatly appreciated at this point. Thanks!
 
J

JonBlack

Member
Apr 11, 2012
89
0
0
^ That's a good start point.

It may not be the CPU but rather the motherboard not supplying the correct or adequate voltage required. I think your Asus motherboard has very limited voltage adjustments. If you can you raise the voltage offset up a setting and see if it stablizes and go from there. I don't think that board has LLC either, so that can't help.

If your board is similar to my lower end ASRock Z68, then the offset was only adjustable in large increments. So watch those temps!
 
BD231

BD231

Lifer
Feb 26, 2001
10,568
138
106
http://www.youtube.com/watch?v=_fxXB5iiVS0

Probably just v-droop messin with ya. This video should get you stable, comfortable with your bios and overclocking as well. Be sure and disable turbo if you OC, you also don't need to increase your load load calibration past high or so (whatever it takes to get winodws to report a voltage as close to the voltage set in the bios).

For reference my chip runs @ 4.7ghz/1.355v. For 4.5ghz or under I need 1.24v, so that should be your general voltage range unless you're just trying to go for a stock voltage OC. I don't even know what stock voltage is on these things though, I've never run this chip at stock before.
 
P

Poewan

Junior Member
Apr 18, 2012
6
0
0
Cooler is a Noctua NH-U12P. My temps appear ok, at least not to the point where I think it might provoke stability issues. According to HWiNFO64, Vcore is at 1.241, and max CPU is 49c under "very high" settings of IBT. Thats at stock speeds. At a 4400 OC, max temps were around 65-69c if memory serves.
 
J

JonBlack

Member
Apr 11, 2012
89
0
0
Your temps are fine and got plenty of room to work with there.

When you are stressing the CPU with IBT do you see the voltage going up and down a good bit???
 
P

Poewan

Junior Member
Apr 18, 2012
6
0
0
According to HWiNFO64.....starting the test, voltage is at 1.226....goes up to 1.241 during load...only flucuations that I am seeing is that something it goes to 1.236 for a second and thats it.
 
IntelEnthusiast

IntelEnthusiast

Intel Representative
Feb 10, 2011
582
2
0
What is the voltage on the RAM? Most of the G. Skill is 1.5v but if you have some older 1.65v that might lead to some issues if you are trying to run it at that voltage.
 
Puppies04

Puppies04

Diamond Member
Apr 25, 2011
5,909
17
76
Which version of IBT do you have, I had some dodgy results with an earlier build.
 
Hatisherrif

Hatisherrif

Senior member
May 10, 2009
226
0
0

True this. I haven't had a single problem overclocking my i5, but if your RAM settings get messed up you could easily get a very unstable system. Check the voltages on the RAM, they should be from 1.5-1.65V. If they are at 1.5, maybe you should try lowering the frequency of your RAM, which should automatically stabilize the voltages and perhaps solve your issue.

I highly doubt it, though, because in my experience blue screens are mostly caused by CPU overclocks, but if your system freezes (hard lock, not able to move the mouse), it could very likely be up to the RAM.

If you want more help, I guess you could explain a bit better the crashes you get. Hard locks, CTDs?

Good luck with your computer!

Edit: Lol, just saw your post. If it is at 1.5V, try getting it at 1.65V (I would wait for a green light from Mr. Wood on this, but I strongly believe 1.65V is absolutely fine since I run it on my PC). Maybe you have some older RAM dedicated to run at 1.65.
 
Last edited:
P

Poewan

Junior Member
Apr 18, 2012
6
0
0
Alright, found out what the goddamn problem was. It was the setting BCLK/PEG frequency in the BIOS. It was set at 103, which in turn made my memory clock speed at 16xx instead of 1600. Setting that at 100,returned my memory frequency at 1600. I also enabled Internal PLL overvoltage on a whim, even tough im not sure what that does.

In any case, setting the BCLK/PEG frequency at 100, which fixed the RAM speed at its proper 1600 frequency, allowed to me run a succesful IBT at very high @4.4g. Temps got to 70c under load, but my vcore is pretty high, I can definitely lower it a lot, I just wanted to make sure that if the test failed it wasnt due to too low vcore. The BCLK/PEG freq was probably changed by the god forsaken auto-tuner. The moral of the story for me? Dont be a lazy bastard, and dont let an auto-pilot fonction do what should be done manually.
 
R

Rvenger

Elite Member <br> Super Moderator <br> Video Cards
Apr 6, 2004
6,283
5
81
Glad its working for you. You can disable Internal PLL overvoltage unless your overclocking to the moon.
 
F

felang

Senior member
Feb 17, 2007
594
1
81
BD231 said:
http://www.youtube.com/watch?v=_fxXB5iiVS0

Probably just v-droop messin with ya. This video should get you stable, comfortable with your bios and overclocking as well. Be sure and disable turbo if you OC, you also don't need to increase your load load calibration past high or so (whatever it takes to get winodws to report a voltage as close to the voltage set in the bios).

For reference my chip runs @ 4.7ghz/1.355v. For 4.5ghz or under I need 1.24v, so that should be your general voltage range unless you're just trying to go for a stock voltage OC. I don't even know what stock voltage is on these things though, I've never run this chip at stock before.
Click to expand...

Why would you disable turbo? The great thing about turbo and offset overclocking is that you have stock idle power consumption combined with overclocked speeds when you need them. You can actually use a negative offset to lower idle power consumption while only raising turbo voltage (at least on my Asus p8p67 pro).
 
You must log in or register to reply here.

TRENDING THREADS

COMPANY
RESOURCES
FOLLOW
Top Bottom