CrazyMan42
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Hi, I recently put back together my rig with my X79 dark and my i7 3820, I left all of the bios settings at default except loading the XMP profile. All of the voltages have been left on auto. I decided to give overclocking the 3820 a go, But I noticed that prime 95, AIDA 64 and IBT all fail with the stock settings. I haven't really noticed any instability while using the rig, but if all of the stress tests fail that kinda makes overclocking hard no? Here is what I have in the rig, EVGA X79 Dark (Bios 2.13 I think?) Intel Core i7 3820 4x4 GB 1866 MHz G.Skill Sniper Ram Sapphire Nitro R9 390x EVGA G2 750W I'm using a noctua NH-U12S temps are in the 50 - 60 range. With voltage set to auto CPU-Z says I have a core voltage of: 1.176v under load. Not sure whats going on here. Maybe not enough vcore? But ive never really run into a setup that didn't function correctly at stock on auto. Edit: I see someone on another forum mention they get 1.25V as the default vcore on a X79 sabertooth when they reset the bios.
post edited by CrazyMan42 - 2016/07/10 16:45:11
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MDeckerM
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/07/10 16:46:39
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set memory timings/frequency back to default and then overclock the cpu within stability ranges. After you get your overclock dialed in you can then start adjusting the memory settings.
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CrazyMan42
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/07/10 17:49:50
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thanks, if i don't touch the memory settings it seems to be stable now. However if i set my vcore to 1.24v in the bios I noticed the upper left corner says 1.25v and CPU-Z / HWmonitor say 1.22v with no load and 1.20V with a load what is the real voltage?
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MhzManiac
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/07/11 23:04:03
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I've always just relied on my cpu_z reading. Got my Sandy up to 5 gig when I was still running it. Water cooled of course.
That is me in the picture, anyone else ever pet a live Lion?EVGA Z390 FTW (Bios 1.08) i9-9900KF 8 core, 32G Corsair Vengeance LPX Dual Chl 3000 XMP-1 , Intel SSD6 M.2 2TB, Samsung 840 PRO 1TB / 512G SSD, Gigabyte RTX 2080 Super , Win 11 Pro 64, EVGA Supernova 1300 watts, NZXT Phantom 820, Strix Raid DLX 7.1 surround, Corsair H100 Liquid , Dell S2417DG /S2409W / Acer XB241H Predator / Samsung C24F390 Curve/ Oculus Rift S VR
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bdary
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/07/26 10:10:42
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When I had my 3820 and X79 Dark board, I never could get total stability with my ram set at 1866 using the XMP profile or manually. I just always figured I had a very weak IMC. The chip itself was a good OC'er though. Once I settled on leaving the ram at 1600 using the XMP profile timings, all was good. While I OC'd using the bclk, I had no trouble with the ram (or stability) anywhere up in the 1600 to 1700's. Just not 1866...
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CrazyMan42
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/07/29 08:43:23
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I have mine at 4.2GHz @ 1.21 volts (bios says 1.24 in the top left). It's stable in prime95 for the 30 minutes I ran it and hasn't crashed while playing any games so I think its fairly stable. 2 of my ram sticks died so I'm waiting to RMA them, the other two however seem to be fine at 1866. When i get back to running quad channel I'll probably have to lower them to 1600. NZXT cam tells me my voltage is 1.29v my bios says 1.24, and cpu-z and hwinfo64 say 1.21v I don't have a multi meter or anything so I can't really check I just have to hope the voltage isn't too high >_> Temps seem to max out at around 68C after 30 mins of p95 on a H80i v2. I'm using an offset of -65mv in the bios. the VID is not the voltage the chip is getting but its the voltage it thinks it needs to be stable right?
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bdary
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/07/29 14:58:18
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I never really paid much attention to the VID voltage. I also always used a fixed Vcore voltage on my Dark board instead of an offset.
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CrazyMan42
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/07/29 15:36:30
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I've tried changing the Vdroop setting none of them do anything from what I can tell besides setting it to disabled and then lowering the voltage a bit more does anyone have any experience with this? setting Vdroop to disabled raised my vcore from 1.24 in the upper left to 1.27, so i lowered the offset even further so it was back to 1.24v in the top left and now cpu-z says 1.235v in windows...
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bdary
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/07/30 02:28:44
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I gave an explanation on Vdroop in your other thread. At least as far as to what I experienced trying the various Vdroop settings... If you want some idea's for some settings, here's what I was running for my daily use. Here's my 4.80 OC main settings >> http://forums.evga.com/4808-GHz-with-BIOS-R210-m2129272.aspx
post edited by bdary - 2016/07/30 02:32:16
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MhzManiac
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/08/18 22:37:44
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Why disable K Boost in this config?
That is me in the picture, anyone else ever pet a live Lion?EVGA Z390 FTW (Bios 1.08) i9-9900KF 8 core, 32G Corsair Vengeance LPX Dual Chl 3000 XMP-1 , Intel SSD6 M.2 2TB, Samsung 840 PRO 1TB / 512G SSD, Gigabyte RTX 2080 Super , Win 11 Pro 64, EVGA Supernova 1300 watts, NZXT Phantom 820, Strix Raid DLX 7.1 surround, Corsair H100 Liquid , Dell S2417DG /S2409W / Acer XB241H Predator / Samsung C24F390 Curve/ Oculus Rift S VR
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bdary
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/08/19 06:50:16
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The K-boost feature gives you a short quick boost of vcore voltage at boot-up. It's nice if you're able to run a high OC at a lower vcore, but it won't allow you to boot at that same vcore. I always tested my OC settings with K-boost disabled. If I was stable, I didn't use it. I don't see any reason to use it as long as you can boot with whatever vcore setting you're using.
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MhzManiac
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Re: X79 Dark W/ i7 3820 Stress Test Fail.
2016/09/01 22:28:25
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That is me in the picture, anyone else ever pet a live Lion?EVGA Z390 FTW (Bios 1.08) i9-9900KF 8 core, 32G Corsair Vengeance LPX Dual Chl 3000 XMP-1 , Intel SSD6 M.2 2TB, Samsung 840 PRO 1TB / 512G SSD, Gigabyte RTX 2080 Super , Win 11 Pro 64, EVGA Supernova 1300 watts, NZXT Phantom 820, Strix Raid DLX 7.1 surround, Corsair H100 Liquid , Dell S2417DG /S2409W / Acer XB241H Predator / Samsung C24F390 Curve/ Oculus Rift S VR
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