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i7 3820 - 4820 Overclock Club - Page 48

post #471 of 6498
lol I myself go the SP1 tip on the previous page.

Set 125 Bclk and 37 multiplier with 1.35~1.38vcore and the rest on auto and it should be enough to reach 4.7GHz
 
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post #472 of 6498
And SP1 tip worked like a charm, thanks!
post #473 of 6498
I dunno how the hell you guys are getting so low vcores. I can't get any lower than 1.42 for my 4.75GHz OC (all BIOS setting listed here)...

http://www.overclock.net/t/1244099/get-my-voltage-down-all-bios-settings-listed#post_17000650

If I try anything lower I just get a 124 BSOD frown.gif

TBH, I'm not too bothered anymore. It's not like I'm planning to keep my chip for 10 years so not that worried about the miniscule extra degradation (SB-E chips are more robust at handling higher volts than standard SB anyway) and it's hardly going to effect the power bills. Besides the official SandyBridge-E guide on this site says you can run up to 1.5v on water and I'm well below that mark.

I guess the 'wall' on my chip must be lower than others. I've posted my BIOS settings on a few boards now and few people want to help me so screw it, I'll just stick with how I've got it now. My temps never go above 70 even after 8 hours of custom P95 anyway.

Edit: Could it be that my power hungry RAM (1.65v) and GTX 680 are the cause of my need for a higher vcore?
Edited by estebanrey - 4/18/12 at 2:38pm
post #474 of 6498
what kind/wattage of PSU are you using?

Read this yet?

http://www.overclock.net/t/1120291/solving-fixing-bsod-124-on-sandybridge-read-op-first
Edited by Ramsey77 - 4/18/12 at 3:05pm
 
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post #475 of 6498
Quote:
Originally Posted by Ramsey77 View Post

what kind/wattage of PSU are you using?

Corsair TX850M, should add it to my sig really.
post #476 of 6498
Quote:
Originally Posted by veblen View Post

Quote:
Originally Posted by BuildBuildBuild 
This failed even worse. I uninstalled the ASUS AI Suite. I went to the BIOS and pressed F5 to load the "Optimized Defaults". I then:

1) changed the "Ai Overclock Tuner" to "X.M.P."
2) changed the CPU Strap to "125 MHz".
3) changed the Memory Frequency to "DDR3-1666Mhz"
4) changed the Multiplier to "37"
5) I left the "CPU VCORE Voltage" in the default "Offset Mode + Auto"

Screenshot of settings:

1) http://i.imgur.com/VFBIn.jpg
2) http://i.imgur.com/K6212.jpg

I saved the settings and restarted, but it failed when restarting. The ASUS splash screen did not show, the screen stayed blank, and the Q-Code on the P9X79 Deluxe Motherboard was stuck on "69". I had to hold the power button to turn the PC off, and when I switched it on again, I got the "American Megatrends" screen saying "Overclocking failed!".

I then tried switching the "CPU VCORE Voltage" to "Manual Mode" and setting the voltage to 1.4V, but it also failed in the exact same manner.

What am I doing wrong? Thanks.

I think your memory settings are the culprit.
Here's what I'd try:
Option #1. Don't use XMP. Set it to Manual and manually enter your memory timings and frequency. Looking at your XMP profile, you can probably do 2000MHz at 9-9-9-24 (conservative estimate) at 1.55v (mem voltage).

Option #2. If you want to use XMP, you might want to bump your mem voltage a little above 1.5v to see if that works.

I never use XMP settings since it often prevents OCing even a tad above the rated frequencies, which is what you have with 125 BCLK.

For 125X37, you shouldn't need more than 1.4 vcore.

Regarding Option #1, my memory is 7-8-8-24-2N @ 1600 Mhz, are you 100% sure I can/should set it to 2000MHz at 9-9-9-24 ? If so, then since with Option #1 I would have to slow down the latency of my RAM, wouldn't Option #2 be better since the RAM's actual timings would be kept?

Sorry if these seem like dumb questions, I just have no idea what I'm doing. redface.gif
Edited by BuildBuildBuild - 4/18/12 at 4:56pm
post #477 of 6498
Quote:
Originally Posted by veblen View Post

Quote:
Originally Posted by BuildBuildBuild 
This failed even worse. I uninstalled the ASUS AI Suite. I went to the BIOS and pressed F5 to load the "Optimized Defaults". I then:

1) changed the "Ai Overclock Tuner" to "X.M.P."
2) changed the CPU Strap to "125 MHz".
3) changed the Memory Frequency to "DDR3-1666Mhz"
4) changed the Multiplier to "37"
5) I left the "CPU VCORE Voltage" in the default "Offset Mode + Auto"

Screenshot of settings:

1) http://i.imgur.com/VFBIn.jpg
2) http://i.imgur.com/K6212.jpg

I saved the settings and restarted, but it failed when restarting. The ASUS splash screen did not show, the screen stayed blank, and the Q-Code on the P9X79 Deluxe Motherboard was stuck on "69". I had to hold the power button to turn the PC off, and when I switched it on again, I got the "American Megatrends" screen saying "Overclocking failed!".

I then tried switching the "CPU VCORE Voltage" to "Manual Mode" and setting the voltage to 1.4V, but it also failed in the exact same manner.

What am I doing wrong? Thanks.

I think your memory settings are the culprit.
Here's what I'd try:
Option #1. Don't use XMP. Set it to Manual and manually enter your memory timings and frequency. Looking at your XMP profile, you can probably do 2000MHz at 9-9-9-24 (conservative estimate) at 1.55v (mem voltage).

Option #2. If you want to use XMP, you might want to bump your mem voltage a little above 1.5v to see if that works.

I never use XMP settings since it often prevents OCing even a tad above the rated frequencies, which is what you have with 125 BCLK.

For 125X37, you shouldn't need more than 1.4 vcore.

OK, so I tried Option #2, but I could not get my PC to start with XMP on and a voltage of 1.55v.

I then tried Option #1, and after playing around with it and doing some stability testing, I managed to get 4.625Ghz stable (having passed 3 different Intel Burn Tests and over 2 hours of Prime95 without errors) by hitting F5 loading the ASUS "Optimized Defaults" and then ONLY changing:

1) "Ai Overclock Tuner" >> "Manual"
2) "CPU Strap" >> 125Mhz
3) "Memory Frequency" >> DDR3-1666Mhz (the timing was automatically set to 9-9-9-24, also, I could not get it to work at 2000Mhz)
4) "CPU VCORE Voltage" >> Manual >> 1.38v (I could not get it stable at any level below that)

Everything else was left with the default values (e.g. "Auto").

Below are the two results:

380

362

Can someone please look at the fine detail of those two screenshots and confirm whether everything is OK and the values are what they should be?

Also, can you please confirm:

1) Is it normal for the Core Voltage to have to be set to 1.38v to get a stable 4.625Ghz ?
2) Is it normal for the Core Voltage to fluctuate between 1.38v and 1.41v when manually set to 1.38v and running Intel Burn Test or Prime95?
3) Is it normal for the Max Temp of a core to reach 78 C with 1.38v at full load and my setup (see sig), and 38C when idling ?
4) Is it safe to run the PC at these values, voltages, and temps in the long-term?

This is my first time overclocking anything, so I have no idea if my results are good, bad, or ugly, and I want to make sure the values and results are within the expected norm or not. Thanks everyone!
post #478 of 6498
Quote:
Originally Posted by BuildBuildBuild View Post


1) Is it normal for the Core Voltage to have to be set to 1.38v to get a stable 4.625Ghz ?
2) Is it normal for the Core Voltage to fluctuate between 1.38v and 1.41v when manually set to 1.38v and running Intel Burn Test or Prime95?
3) Is it normal for the Max Temp of a core to reach 78 C with 1.38v at full load and my setup (see sig), and 38C when idling ?
4) Is it safe to run the PC at these values, voltages, and temps in the long-term?
This is my first time overclocking anything, so I have no idea if my results are good, bad, or ugly, and I want to make sure the values and results are within the expected norm or not. Thanks everyone![/COLOR][/b]

1) your core voltage is kind of high, but if that's what your chip needs, that's what it needs. If you're concerned, an offset of +0.020 should give you similar max voltage, but will lower itself when not needed.
2) what you're seeing there is a product of your LLC settings (may be called vdroop or load line calibration, or something else of the sort), it's part of the Intel spec and nothing to worry about.
3) that is kind of high, I'm not familiar with your cooler, but 38C at idle and load of 78C is pretty warm.
4) dunno, it might last a week or 20 years. Welcome to the razors edge smile.gif (I'd get the temps down and maybe go for 4.5 with a lower vcore, but you're not in any danger zone)

Also when running IBT you should select a memory size closer to the total amount of memory you have, you'll get temps a couple of degrees hotter
Edited by SneakyBushNinja - 4/19/12 at 6:35am
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post #479 of 6498
Quote:
Originally Posted by BuildBuildBuild View Post

1) Is it normal for the Core Voltage to have to be set to 1.38v to get a stable 4.625Ghz ?
2) Is it normal for the Core Voltage to fluctuate between 1.38v and 1.41v when manually set to 1.38v and running Intel Burn Test or Prime95?
3) Is it normal for the Max Temp of a core to reach 78 C with 1.38v at full load and my setup (see sig), and 38C when idling ?
4) Is it safe to run the PC at these values, voltages, and temps in the long-term?

1: Not every chip will be a great overclocker, but 1.38v isn't that bad.

2: I believe it is called Vdroop and LLC (Load Line Calibration) is helping to fight it.

3: Temps are a bit high (especially for that cooler), but you didn't tell us what your ambient temp is or what type of TIM you are using. You could try reseating your cooler, along with trying some different TIM. There are many videos on the Tube for pointers on TIM application.

4: As it sits right now, I don't think anything is wrong with running this setup 24/7. I mean, when are you gonna be running 100% on your CPU besides when you're benching? thumb.gif

Edit: It would be easier to help you if you were to fill out your complete rig with the rig builder in your profile. It's easier for people to see your goods. biggrin.gif
Edited by Ramsey77 - 4/19/12 at 9:10am
 
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post #480 of 6498
1.38 is perfectly safe. Your temps are a bit higher but I am also using a H100. I see 62-65* max during IBT/Prime95 with my fans on high and the pump on medium. I see no reason not to keep it 24/7 at that. I have had mine at that setting for 2 months. I went 4.75 for a bit but once every 4 or 5 days it would BSOD for no reason at random usually when doing nothing. So instead of troubleshooting it I dropped back down to 4.625 because it works flawlessly and I don't need any more power than that.
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