** Official ** Gigabyte UD3 P45 Series -- EP45-UD3 / EP45-UD3R / EP45-UD3P

Q9300 495x7 5:6 DDR2-1188...
tried setting CPU's core voltage upto the Intel spec vcore 1.36250,
also tried VTT 1.36 which's right below vcore value and NB/MCH core 1.40,
and memory timing was set loose to 5-5-5-18 / 5-5-12-80-5.

Prime95 blend 1hr test only.

http://img123.imageshack.us/img123/1...9162127rd9.png

i still couldn't lower the CPU GTL_ref down, but if i recall right it's about same value that i needed to use for this Q9300 and at this CPU FSB on my other P45 board, but never gotten a chance to test it like i'm doing on this board.

Quote:

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Originally Posted by pangingIII

there were some misunderstanding about voltage values in ET6...
it's about time someone take the time to write and explain about the BIOS vs. ET6 voltage values...
i can now use the post as a ref instead of keep repeating myself...

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When this board came out there were a few posts claiming that this board was the best/easiest overclocker... ever - and for the most part that's true. Then there followed a volley of posts remarking on the boards wacky Auto voltages, then came posts of high voltages (possibly) killing 45nm cpu's, some people are very unclear of how to make BIOS settings and as for GTL Ref's that's the equivalent to rocker science for most.
As good as this board is, I think it still warrants a good overclocking guide, we all like to push our cpu's near their limit and the closer we get to that limit... well, it requires a lot of patience and 'know-how'.
There is very good information in these forums - but it's all so fragmented.
I for one have a bit (OK, a lot) of difficulty piecing together or even understanding some of this information - yet alone putting it into a practice that works!

Generic oc guides help but as we know the hardware we all use is different, BIOS's are different, terminology in BIOS's are different, one BIOS has a GTL % another has a voltage and so on, should vTT be higher than vCore, how much higher should PLL be above vCore, what are safe ranges, should I start with 0.635 or 0.667 references, what about the NB... and the list goes on.
People can very soon lose interest if reading an article if not specifically geared to their hardware and these days we have busy lives and 'just want a quick fix' however right or wrong that is.

This is just my little rant for this morning, I've always found guides for my previous motherboards but so far I've not seen one for this family of boards, challenge - prove me wrong.
There's always the argument that the information on these forums will always be fragmented, that's how a forum works but we used to have good overclocking guides... so why don't we now?
Also as technology improves there still seems to be such a void between those that design/make/know and us the consumers when it comes to understanding what we are playing with - though there may be good reasons for that.

* This post isn't directed at pangingIII or anyone else for that matter - just used the quote above as a starting point.

hi all.,off topic abit.,which 1 better.,oc with 4x1GB or 2x2GB..tq

Quote:

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Originally Posted by ezaleina

hi all.,off topic abit.,which 1 better.,oc with 4x1GB or 2x2GB..tq

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ezaleina,
i would say 4x1GB, in terms of ram overclocking headroom.
at 500fsb with 4x1GB (of a well-matching and good overclocking ram kits) you can still ran ram at DDR2-1200), or you could run them at 1:1 CAS4-4-4 DDR2-1000.
you may not able to do these same things by using a 2x2GB kit.

what is your goal in overclocking the CPU and ram anyways?

Quote:

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Originally Posted by pangingIII

ezaleina,
i would say 4x1GB, in terms of ram overclocking headroom.
at 500fsb with 4x1GB (of a well-matching and good overclocking ram kits) you can still ran ram at DDR2-1200), or you could run them at 1:1 CAS4-4-4 DDR2-1000.
you may not able to do these same things by using a 2x2GB kit.

what is your goal in overclocking the CPU and ram anyways?

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tq bro pangingIII.,i dunno what to say when u ask me what is my goal in OC.,as long as i know.,i just do it for my job.,i work in a computer shop in Malaysia.,my boss always say want to give customer satisfaction.,he wants we the technical dept demonstrate the performance system that they bought..before this i dunno how to Oc and not interested to OC.,after my boss said he wants he's staff increase their performance i try to learn it step by step in this forum..and when the customer ask how to OC.,or u know how to oc.,at least i knew how to do it..tq

Quote:

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Originally Posted by a573573

Glad I could be of some help! I have been trying to post this around a few places to help others out!

I posted it here a time or two, but only a small part of it. I just made out the examples tonight as I seen what I had previously posted still left some users a bit confused.

I do think it should be handled a little better in the BIOS Vs. EasyTune but at least now I know for sure what is what and how to manipulate it

Hope this helps many users, as I know this can be a very tricky subject

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Thanks for your post about the relationship of the BIOS settings to ET6 when adjusting cpu/mch refs for these boards. I've had success through just plain old trial and error but what your saying makes sense to me and should prove helpful.

Glad it could help a bit, I think it should be added to page one for all to see it for sure!

I mod the Gigabyte Forum at TweakTown, so if you have any questions feel free to shoot them at me

My name there is Lsdmeasap, I was going to use that here but thought it was the reason my activation/approval did not go thru so I registered again with a different name

Got hold of the rev 1.1 of the UD3P for some testing today and it's a world of difference with regards voltage stability. Thought you guys might be interested.
Rev 1.0 and 1.1 compared,
http://forums.vr-zone.com/showpost.p...9&postcount=42
Rev 1.0 - earler findings Oct '08,
http://forums.vr-zone.com/showpost.p...23&postcount=4

Might have been a bad batch of rev 1.0 mobo we had locally a few months back though.

I have been running this O.C. for a little while now... I like it because of the low volts which makes it nice for 24/7. Loadline enabled, 333 latch, 2.40B divider, 2 sticks of Kingston HyperX and a TRUE Black for cooling. For the stability test I ran Prime custom FFT at 1024K to 4096K.

@mark0326,
personally, i think, from now on, if people post the ET6 window along with their overclocking achievements then it will be more than enough information.

==========================


this would probably be my first choice for an every day booting/setting for this Q9300 on a UD3R board.
CPU with True and 2 12mm mid rpm fans, the overall system temperature was seems to be fine.

Q9300 480x7.5 5:6 DDR2-1152.
i added more vcc,vtt and mch core volts to my last settings (in post #1111), in that one i ran superpi 32mb's tested only.

this time i run Prime95 blend (still 2hr test only)...

http://img440.imageshack.us/img440/1...9204450vp8.png


==========================

btw, MacClipper, thanks for the info, that's good information and good to know.

a573573 and PangingIII

Thanks for your detailed explainations and postings. Very valuable info. I think I'm starting to understand now how ET6 works compared to BIOS. ET6 show the %, not the volts like BIOS. For example, using PangingIII ET6 window above, his MCH Ref is .76 and vtt is 1.34. So in BIOS it would show what as far as volts then?

Well The BIOS shows % as well, but in volt format. .63% to be exact of Vtt for MCH ref unless you deviate from that percentage

Please do notice that at 1.20 Vtt stock, MCH Ref and CPU ref for example are .76 same as you would see in ET, which is .63% of Vtt. You have to keep the default % values in mind

As for your question about the above, with .76 showing in the ET Screen and 1.34Vtt, the BIOS MCH Ref could be set on Auto or it would be manually set at .8442

So does auto work well in BIOS if I have to up my Vtt volts and MCH Core volts to be stable? Or is manual the way to go?

bluestang,

http://img244.imageshack.us/img244/3...9233138au3.png

ok, i don't remember the value in bios and never want to remember it, lol, i'll have to reboot the system and to look in bios in order to answer your question.
so i hope you won't mind taking this example?


so here's a example...

once im in bios, i set CPU term. (VTT) to 1.20
DRAM volts to 1.8

then go to these...
... CPU PLL and set its value to 1.50
... CPU ref. 0.83
... CPU core to 1.35

... DRAM term. 0.81
... Ch A ref. 0.81
... Ch B ref. 0.81

... MCH core 1.34
... MCH/DRAM ref. 0.81
... MCH ref. 0.76
... ICH I/O 1.59
... ICH core 1.1

then, after that i go back to the CPU term. and change the 1.20 setting to 1.34
and then change the DRAM volts from 1.8 to 1.9
and once you boot into Windows that will be the voltage value you see in the ET6.

i normally don't adjust voltage setting in ET6, i only use it sometimes but then i want to reboot the system with a new setting in BIOS before i actually test the system.
so if i may i would suggest you do the same.

Quote:

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Originally Posted by pangingIII

@mark0326,
personally, i think, from now on, if people post the ET6 window along with their overclocking achievements then it will be more than enough information.

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Maybe I should ask for help with my overclock then rather than trying to look for the answers by myself and not understanding all of what I read. Guess pride is getting in the way, lol.

Quote:

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Originally Posted by bluestang

So does auto work well in BIOS if I have to up my Vtt volts and MCH Core volts to be stable? Or is manual the way to go?

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Ya, you can leave Ref Voltages on Auto if you like for sure. It may or may not be stable, but you can leave them. Don't leave Vtt or MCH on Auto though, you would want to set those manually.

If you Leave Ref voltages at Auto they will always be this amount in ET no matter what you set Vtt to, but the actual voltage used will be the respective .xx% amount of Vtt >>>

CPU Reference Voltage (.63% of Default Vtt/1.20) .76 ET
CPU Reference2 Voltage (.67% of Default Vtt/1.20) .80 ET
MCH Reference Voltage (.63% of Default Vtt/1.20) .76 ET

Quote:

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Originally Posted by a573573

Ya, you can leave Ref Voltages on Auto if you like for sure. It may or may not be stable, but you can leave them. Don't leave Vtt or MCH on Auto though, you would want to set those manually.

If you Leave Ref voltages at Auto they will always be this amount in ET no matter what you set Vtt to, but the actual voltage used will be the respective .xx% amount of Vtt >>>

CPU Reference Voltage (.63% of Default Vtt/1.20) .76 ET
CPU Reference2 Voltage (.67% of Default Vtt/1.20) .80 ET
MCH Reference Voltage (.63% of Default Vtt/1.20) .76 ET

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try 600fsb and left MCH ref. at auto.
MCH ref. not always remain at .76v value. the value will be changed on certain CPU FSB as far as i can see.

Ahh, I was not aware of that as I have no Ln2 to run 600 FSB!

Can you document these changes and at what points so I may add them to my guide/notes I post about this

Voltage Instabilty in UD3P REV 1.0 OMG !!!! ,This is cause to get error while run Orthos for sometime. Is that right? I got freezing after run orthos over 2-3 Hrs.
Now I'm using [520x8.5] with 1.360 Vcore in CPU-z .I'm never noticing the Vcore graph before. Do you guys think this causing unstable?

enable LLC
CPU Enhanced Halt (C1E)...................: [Disabled]
C2/C2E State Support......................: [Disabled]
x C4/C4E State Support....................: [Disabled]
CPU Thermal Monitor 2(TM2) ...............: [Enable]
CPU EIST Function.........................: [Disabled]
Virtualization Technology.................: [Disabled]

Quote:

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Originally Posted by a573573

Ahh, I was not aware of that as I have no Ln2 to run 600 FSB!

Can you document these changes and at what points so I may add them to my guide/notes I post about this

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as far as i can remember the MCH ref. value of 0.76 will be changed to 0.74 maybe at above 400-450fsb, also, the value even change from 0.76 to 0.74 when you use ET6's quick boost to overclock an E8400 to 450fsb.
you can try that if you always set it on auto, of course you will need to check the value in ET6, this due all you will see in bios is Auto (and no value).
however, after the first couple days i recieved a UD3R board i never set this bios parameter on auto, so i can be wrong and it's better that you check it yourself.
i've been doing alot of overclock testing on a UD3R board and E8400 before, but not a lot of reading, so may be i will read yours when you are done with it.

Well it would have to be above 450 as that is what I run normally. I have ran 533+ but never looked, I'll have to look into this tonight when I get some time! Thanks for sure for pointing that out as I had no idea

I cant do 600 FSB but I can for sure do 533-560

I have a P45-DS4P and a E3110, so we have the same BIOS basically and CPU. I think the only difference in BIOS between our boards is I have CPU ref 2, the rest is the same.

I will check out MCH Ref in Auto at High FSB, you may very well be right

i don't know about your board model as i've never tried one, but UD3R's and 600fsb was one of the very first i tried on the board once i have it, so i think i remember that one, i first tried with all volts and ref. setting on auto, then booted into windows and took a look at ET6's value, the MCH ref. was set to 0.65v.

Ahh, well I have never tried it like that, it will probably do 600 FSB then at Auto settings as I do know Vtt and Pll are into the 1.8 range at 450 FSB if left in Auto.

I'll give it a few shots in auto and a few manually set and see how she does. My Xeon is a volt hog though, so I may not want to push the vcore needed, I dunno

I can't understand this board :shakes: It's constantly running my Q9550 quite a bit hotter then my TPower I45 did. On this board, at stock clocks (2.83GHz) with only I'm hitting 48c. I know on the TPower I had the CPU GTL ref at .63x, and on this board it defaults at .76x. Could that be the difference? I'm using the F4 BIOS. I've reapplied thermalpaste and reseated my TRUE several times.

TPower I45
http://img100.imageshack.us/img100/6...5504007je0.jpg

EP45-UD3P
http://img186.imageshack.us/img186/8822/ud3pcw6.jpg

Quote:

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Originally Posted by MacClipper

Got hold of the rev 1.1 of the UD3P for some testing today and it's a world of difference with regards voltage stability. Thought you guys might be interested.
Rev 1.0 and 1.1 compared,
http://forums.vr-zone.com/showpost.p...9&postcount=42
Rev 1.0 - earler findings Oct '08,
http://forums.vr-zone.com/showpost.p...23&postcount=4

Might have been a bad batch of rev 1.0 mobo we had locally a few months back though.

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I think all the rev 1.0 mobos are like that. Are there any physical differences between the revisions?