OCUK Sandy Bridge, SB-E and Ivy Bridge 5GHZ Club

cool thanks. What vcore are you using for 4.8GHz on your 2600K?

Using 1.38v underload for mine to be stable at 4.8GHz.

Getting to 4.9GHz takes a lot more....at 1.416v just now and its looking good.
5Ghz ran for a couple of hours at 1.44v so looks like i will be settling for 4.8GHz for 24/7 use
 
close to limit now

Untitled1.jpg

5.0 @ 1.380v
5.1 @ 1.420v
5.2 @ 1.475v
5.3 @ 1.515v
5.4 @ 1.590v
5.5 @ do i risk it?
 
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cool thanks. What vcore are you using for 4.8GHz on your 2600K?

1.4v under load. Need to play with the offset voltage some more so I can use a lower vcore unloaded. I'm afraid the LLC on this board is not very good. Also waiting for a new and better bios to come out.
 
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5.0 @ 1.380v
5.1 @ 1.420v
5.2 @ 1.475v
5.3 @ 1.515v
5.4 @ 1.590v
5.5 @ do i risk it?

That screenshot isn't 5.4GHz. It's 5.3878GHz.

My UD5 does the same thing - underclocks the bclk. I had to raise from 100.0 to 100.3MHz in BIOS to get up to clean multiples of 100. I suggest you do the same :)
 
beh*;18831051 I'm afraid the LLC on this board is not very good. Also waiting for a new and better bios to come out.[/QUOTE said:
Yes its the same on my ud7-b3 with the F3h bios.

1.45v at idle drops to 1.404v with level 2 LLC on but thats me 8hrs prime stable at 4.9GHz.

If i go to level 2 LLC it puts the voltage above the idle amount.

Need a setting that only allows it to drop a tiny bit.
 
That screenshot isn't 5.4GHz. It's 5.3878GHz.

My UD5 does the same thing - underclocks the bclk. I had to raise from 100.0 to 100.3MHz in BIOS to get up to clean multiples of 100. I suggest you do the same :)

Is that a common problem on the UD5? How far can you push it to get past 100?
 
Same on the UD7.

Should be fine upping it by that fraction i would have thought.

On some boards disabling spectrum spread stops it from happening :)
 
Seems like most of the Gigabyte boards underclock the BCLK for some reason, I haven't seen people comment on it on other brands. Mine wouldn't post at 100.1 or 100.2 but 100.3 it's rock solid. I've seen people run 105.0MHz+ with no issues so putting a few extra .1's of a MHz is going to hurt anything :)
 
Yes its the same on my ud7-b3 with the F3h bios.

1.45v at idle drops to 1.404v with level 2 LLC on but thats me 8hrs prime stable at 4.9GHz.

If i go to level 2 LLC it puts the voltage above the idle amount.

Need a setting that only allows it to drop a tiny bit.

Same on the UD7.

Should be fine upping it by that fraction i would have thought.

On some boards disabling spectrum spread stops it from happening :)

Yeh this behaviour seems pretty consistent with most of the boards in the series. Seems to be backed up by some of the other forums as well. I am hoping that a bios update will help. BTW: UD4 beta bios does not have a LLC1/2 option.
 
Hey mate,

You're doing well with it ;) Get prime running in windows and adjust your voltages in there?

How are your temps?


Cheers mate....your chip went to a good home :)

Ran prime 8hrs at 4.9GHz at 1.404V with temps in the low 70s

4.8GHz at 1.38v seems more sensible for 24/7 setting till LLC get sorted out.
Seeing it idle at 1.452v made me a bit uncomfortable.

Tempted to crank it up and see what it will bench at but will take it easy i think...for now :)
 
limit i think

444.jpg

5.4ghz 1.590v super pi 6927s. LLC level 2 and just upped the volts, haven't a clue about what to change in the other settings but tried 5.5ghz up to 1.615v and decided to call it a night (bottled it):D, cooling is a cool-it freeze zone which kept temps @50c load 18c idle. sorry about screenshot its just the way it saved.
 
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