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+--- Thread: I need help stabilizing my CPU overclock (/showthread.php?tid=1269)
I need help stabilizing my CPU overclock - SickBeast - 05-21-2016
Hi Guys,
I have an Intel i5 4690k CPU that has been overclocked to 4.5ghz for a long time now. Recently I upgraded to 32gb of DDR3 2400mhz RAM and that's when my instability problems started. I did some reading and apparently Haswell can become unstable when you overclock the CPU and the memory at the same time.
What's really strange is that my computer passes all the stability tests that I run (Aida64, Prime95, Intel Burn Test, OCCT, ROG RealBench, plus 12 hours of Memtest86+). What's happening is the computer will give me a BSOD about once a week. Sometimes the BSOD says "memory_management" and when I look in Event Viewer it's kernel related.
If any of you guys have any tips on how to stabilize Haswell I would really appreciate it. I have tried giving more voltage to the ring bus, more system agent voltage, plus a few others. I went through every possible option in the BIOS and tried to give it a little bit more juice but my system is still a tiny bit unstable.
Right now I have the CPU at 4.4ghz at 1.2v. I was running at 4.5ghz at 1.25v for months and I never had a BSOD until I upgraded the RAM. I am getting BSODs with the RAM at stock and also when it's overclocked to 2400mhz. The RAM passes Memtest though at both settings.
Here are my system specs if that helps:
Gigabyte Z97MX Gaming 5 (latest bios)
Intel Core i5 4690k
32gb G.Skill DDR3 2133 RAM @ 2400mhz (1.65v, standard timings)
Thermaltake 750w PSU
Sapphire Radeon 280x
Thanks guys I hope you have some ideas for me!
RE: I need help stabilizing my CPU overclock - dmcowen674 - 05-22-2016
Sometimes RAM chips just will not work with a particular Motherboard but put the same chips that were failing in a different board and they could run fine. It's really like rolling dice.
RE: I need help stabilizing my CPU overclock - SickBeast - 05-26-2016
It turns out I needed to add 0.05v extra voltage to the RAM to make it stable. I'm not too happy about it. I feel that my RAM should run stable at its rated voltage. Is this normal when running 4 dimms? Do 4 dimms require extra voltage like that?
RE: I need help stabilizing my CPU overclock - dmcowen674 - 05-26-2016
(05-26-2016, 06:30 AM)SickBeast Wrote: It turns out I needed to add 0.05v extra voltage to the RAM to make it stable. I'm not too happy about it. I feel that my RAM should run stable at its rated voltage. Is this normal when running 4 dimms? Do 4 dimms require extra voltage like that?
Memory chips consume a lot of power and run hot as hell which is why always good idea to have heat spreaders on them.
![[Image: a_akasa_heatspreaders_w_shinetsu-250x80.jpg]](http://www.acousticpc.com/sitebuilder/images/a_akasa_heatspreaders_w_shinetsu-250x80.jpg)
RE: I need help stabilizing my CPU overclock - BoFox - 06-02-2016
(05-26-2016, 06:30 AM)SickBeast Wrote: It turns out I needed to add 0.05v extra voltage to the RAM to make it stable. I'm not too happy about it. I feel that my RAM should run stable at its rated voltage. Is this normal when running 4 dimms? Do 4 dimms require extra voltage like that?
What's the memory voltage? 1.35v? 1.5v? Pretty much anything can handle 1.65v just fine, for 24/7 usage.
Remember, about 10 years ago, with first-generation DDR sticks overclocked to around 500MHz and higher? Some were apply insane voltage to them, like this one poster from OCF:
Quote:My current favorites are:
Corsair Twin-X1024MB 3200XLPRO
2-2-2-5 @ 200MHz (DDR400) 2-4-4-8 @ 250MHz (DDR500)
2.75V @ 2.85V
Asus P4c800Edlx 875-chipset, SPD, BIOS ver.1017, Chaintech ZNF3-250 SPD DDR Strength-2, SPD, BIOS ver. 0714
Kingston Hyper-X3200 2048MB KHX3200K2/2G
2.5-3-3-6 @ 200MHz (DDR400) 3-4-4-8 @ 250MHz (DDR500)
2.65V @ 2.85V
Asus P4C800Edlx 875, SPD, ver. 1017
OCZ Technology Premiere 4200
2-3-3-6 @ > 230MHz (DDR460) 2.5-4-4-8 @ 285MHz (DDR570)
2.65V @ 2.85V
Abit IC7, Abit IS7, Abit AI7, Asus P4C800Edlx, Epox 4PCA3+ (3.23VDIMM but CPU was a 3.0 at time and board fried after lapping NB)
Nowadays, even overclocked DDR3 sticks feel "COLD" compared to these old oc'ed DDR sticks.
You worry too much, Sickbeast!