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Gigabyte mobos = Not fully functional EIST+C1E when OCing

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blade52x

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I've noticed that on all three of my LGA775 my Gigabyte boards that I have owned - not one of them has a properly working EIST+C1E when overclocking. The Gigabyte DS3 Rev1.0, 3.3 and P35-DQ6 all have this problem. While on stock voltage it works fine. Stock voltage on my quad is 1.2375V - which I leave set to "Normal" in the BIOS. The moment I change it to any manually set voltage, EIST+C1E do not work properly when enabled. The problem is that the multiplier drops when in idle - but the VCore does not. If I set 1.3V in the bios, I will probably get a steady 1.28V idle and 1.26V load. When using stock 1.2375V I get about 1.08V idle and 1.2V load.

Now why is it that it doesn't work on Gigabyte motherboards?

EDIT: I thought I was in the "Intel MoBo's" section - sorry about posting this in the wrong forum.
 
i think this is a universal thing.

once you specify a voltage for the motherboard you give it no choice but to use that setting. if you set it to 'normal' or 'auto' then the board will have the ability to control the voltage itself.

this is why the board won't change the voltage, but will change the multiplier if you have EIST+C1E enabled.

when i used RMClock with my S939 board and AMD X2, i could set the voltages levels/multipliers for different performance levels much the way EIST+C1E works, but the voltage would not change if i manually set it in the BIOS. i had to leave it on auto if i wanted the voltage to be adjusted on-the-fly.
 
I see this on my Gagabyte DS3 also.
This is why I am most interested in the max overclock a cpu/motherboard combination can do at stock cpu voltages. I am one of those who likes having EIST+C1E enabled even in an overclock situation.

About 75 percent of the time I do not need the extra power that my overclock had available. So I backed off my overclock from 3.1GHz to 2.8GHz.
2.8GHz is the highest I can go and be ortho's stable at stock voltages on my e6400.

With a 6X mulitplier I am at 2.1GHz with 1.21v and with the 8X mulitplier I am at 2.8GHz with 1.28v. Great way to go, system runs cool and quite and efficient with a max stock voltage overclock.
 
Yup, that's why I run my Q6600 at a mere 3GHz for my 24/7 OC. I like having the power saving features on.
 
If the competition starts doing it, then we will see it across all OC boards. It is just an extra setting that must be added to ensure the voltage is running between a max and min level. When the OC is running full load, the voltage is at the upper setting, and when the system is in idle, the multiplier drops so the voltage drops to the min specified voltage set by the user.

If the max and min voltages are used, will that cause the computer to be less stable?

I would like to see such a feature added to a future BIOS
 
I also have an IP35-E, and C1E/EIST work fine even when overvolted beyond spec. Seems like this issue might be a Gigabyte only problem (or maybe only Abit has it right, I wouldn't know).

Intel's specs for an E2180 calls for 1.162V-1.312V as seen at http://processorfinder.intel.com/details.aspx?sspec=sla8y
I have it set to 1.3825V in bios (I think, not that important as the main point is that it's overvolted at all) with the lowest available option being 1.3225V ,1.364V actual, with a ~0.02V vdroop on load. Not that there are any options to manually set the lower end voltage myself though, but at least C1E/EIST work properly.

before.jpg


after.jpg
 
I had a Gigabyte P35 mobo and had the same issues arise,but this has not been a problem with my P5K-Dlx.
 
Hopefully they can fix it through a future BIOS release - though I am surprised it hasn't been fixed yet?

Has no one been mentioning it to Gigabyte?
 
Trombe, is the board stable when it drops voltage along with the drop in multiplier? Hard to test, except to wait and see over the long term while doing sometime non-intensive like surfing.

You do not have a setting for the lower voltage, so the motherboard is in AUTO mode when the multiplier drops?

Seems to be a tricky situation to be in without being able to control the lower voltage setting.

It would really suck to achieve a high stable overclock, only to be ruined by the multiplier and voltage dropping to an unstable state when in idle.

Having the voltage drop in idle is very important to reducing heat, especially in the summer time.

Would be great if Gigabyte would address this.
 
Seems to be a tricky situation to be in without being able to control the lower voltage setting.

It would really suck to achieve a high stable overclock, only to be ruined by the multiplier and voltage dropping to an unstable state when in idle.
Click to expand...

+1

Its been mentioned, as has getting rid of the silly CTRL + F1, the god awfull color scheme of the connectors, documenting what "Performance Enhace" means/does (EPP apparently) , DQ6 used to control all the fan headers with EIST, that got lost long ago in a bios update, giving us actual board voltages in PC Health, you name it and I have bitched (nicely) at them about it, and not just tech support, marketing is who calls the shots these days and I gave them an earful too. Might as well have thrown pebbles at The Great Wall of China.

Fine line to walk to write code in a space limited bios to attempt to cover every possibility that comes up. These boards also support the older higher voltage P4's too.

That said, Gigabytes bios sucks and is just plain obsolete compared to what Abit did on the IP35 and what I have seen on the ASUS X38. The horror is that the bios on the Gigabyte x38 is again the "newbie version" used on P965 and P35 with little or no changes. (No board voltages in PC health, no fan header speed control, crappy to nonexistent fine tuning adjustments, mediocre memory timing adjustments. ad nausea). If you are new to OCing its fine, and will make updating my quide easy, otherwise pffffffffffTTTTT !.

Wake the FARK up Gigabyte !
 
It would really suck to achieve a high stable overclock, only to be ruined by the multiplier and voltage dropping to an unstable state when in idle.
Click to expand...

Well I run 3.2GHz, and when it drops to 1.088V in idle I sure as hell know that isn't stable for load work.

I haven't had any issues because once any load comes in the voltage kicks back up to 1.2V and I'm all stable. I can't imagine it would be any different at some higher voltage running 3.4GHz or 3.6GHz or even 4GHz.
 
For the 10 days or so I've had this running, it's perfectly stable at the lowered voltage/multi for web surfing, leaving torrents on overnight, and junk like that. I doubt the board goes to auto settings when idling; the actual voltage drop looks like it's a static 0.1V or so from whatever is set in bios. That may or may not be an issue when trying to push to extremes, but I'm too afraid to find out because SoCal summer heat is ridiculous at times.

Voltage/multiplier changes tend to be simultaneous and pretty fast at that (just tried alt-tabbing out of a game, dropped to 6x in less than a second). Seems kind of wonky to have it change back and forth every time you load a semi-big program like Photoshop as well, but I haven't run into any problems so far, and unless I do at some point in the future, I'm just going to leave C1E/EIST enabled.
 
just ask about somthing in the p35 dq6 bios - where is the setting to determine whether memory runs at T1 or T2
 
Randominal said:
just ask about somthing in the p35 dq6 bios - where is the setting to determine whether memory runs at T1 or T2
Click to expand...

There is not one, Intel boards run at 2T due to the chip set design. 1T is an AMD thing. There are a couple of Asus Intel board that with some memory multipliers let you try to run 1T but they are exceptions. No Gigabyte Intel chip set board or any other Intel chip set board I know about, and I do not know about them all, has 2T.

You want to look at the Memory Performance" (might be labeled Memory Enhace, cant remember atm. ) option in the bios, it is the Performace Acceleration Techology first found by Asus on the P4's where buffers are eliminiated in the path between the memory chips and the controller allowing for better performance. FAST is good. Turbo is better but if you memory is running right at the edge of its ability using Memory Performance Enhance might make the system unstable.

http://www.lostcircuits.com/motherboard/asus_p4p800/
 
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