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

here's my Q9300 oerclocked to 3.56GHz.

and this's for a starter overclocker (like myself) who happens to use one of these UD3x board + Q9300 (probably the first batch to launch in retail) + OCZ PC2-9200 flex II 4GB kit... voltage settings below may (or may not) help you get started and helps you kick your CPU up to 3.56GHz and at 5:6 DDR2-1140MHz tRD8*.

Prime95 x64 blend mode in 1hr test only.
http://img210.imageshack.us/img210/4...8192131zt2.png


if you like to use tRD 8 you will have to set tRD value in BIOS setup to 8 on both Ch A and Ch B settings,
otherwise, with this particular ram kit and at this CPU FSB and 5:6 memory ratio when you set Turbo, by default, the tRD value is 9.

memory timing is manually set at BIOS to 5-5-5-15 / 4-4-8-56-4,
when you set Turbo, by default, the timings will be 5-5-5-18 / 3-3-6-54-3 which might be too short for this ram clock speed.
if you choose to set Standard mode, the 2nd timings will auto set to / 5-5-9-76-5 and the tRD value within Windows will be at 11-13 (which might be a bit too loose for your liking)

Could someone tell me that the best BIOS is for overclocking a E8500/dual core? and for overclocking RAM?

Thanks

Quote:

---

Originally Posted by Jor3lBR

Change log for new bios F7b?

---

Hope it fix the S3 resume failure from bios F4...

Quote:

---

Originally Posted by a573573

I mean for two sticks you need to make some changes. And no, it will not automatically always get things correct or automatically pickup the information for two sticks.

Use one stick and go in the BIOS and set your MCH to 1.2-1.24 and make sure static tread is at least 9 for now, and trfc at least 54 for now, set your ram voltage and then save and shut down and put in the second stick

Of course, yes your board may be bad, did you UV mark it when you sent it in for RMA the first time to be sure you did not get the same board back? Just wondering as it has been known to happen with many companies and products

---

Let me clarify here: I had this board running for 2 weeks before it started to do this. I tried the different settings and it does not work with 2 sticks of any type of ram in any 2 slots.

The first board I got was DOA and newegg cross-shipped me a new one, so no, it is not the same mobo again.



Now, newegg is not going to RMA this board b/c it is a replacement from the original...which quite pisses me off. I am now waiting for Gigabyte to approve my RMA request.

Quote:

---

Originally Posted by voigts

There should have to be no changes using two sticks of RAM just to boot. You may have to manually set timings to get them at SPD, but it should still boot. Marking the MB with UV is a good idea, as some companies are quick to send the same part right back. I just can't see how its not a MB issue if the RAM is good. The exception to this is the well known problem of trying to load Vista pre-SP1 with 4gigs of RAM installed.

---

I run XP SP3 with 2x 2gigs of black pis. I had no issues for 2 weeks then it just wouldn't boot. I switched out to my 2x1gig sticks of gskill HZs. Still, no work. I then tried my other trusty reserv kit of 2x1gig sticks of Ballistixs double-sided and no work.
I pulled one stick and they all work.

Quote:

---

Originally Posted by Rattle

omg this mobo is a monster once you figure it out...

1.26on NB and 1.22 on cpu term, i am on copper cored stock cooler from my e6600 till me TRUE gets here. I had to mess with cpu and mch ref to get the mobo to do anything near 500. at those settings 500 went 10.5 hours then this run at 525.

I fired her up at 550x7 and shes flying away, pl level 11

---

can u post a et6 screen ?

I have been following this thread from the beginning and having trouble with stability at 8x533 on a UD3R. I really don't want to use ET6, so can anyone who is running an E8500 on a UD3R at 8x533 w/mem at 1:1 and NOT using ET6 but just tweaking in BIOS please post your BIOS settings. It would be greatly appreciated. Thanks!

GA-EP45-UD3R F5 BIOS
E8500@3.8 400x9.5 @ 1.25V
2x2 DDR2-1066 Dominators w/Fan 2.1V v1.1
MSI HD4670
Seagate 400GB SATAII
Coolermaster CM690 3x120mm
Coolermaster Real Power Pro 550
Zerotherm Zen Z120 @ 1800rpm

bluestang,i dont think many people here are using ET6 for thier OC's.but just post the screenshots of ET6 to help others with thier OC's(to see the settings)most do it through bios.

But ET6 shows different values than BIOS...no?

For me, all the references in ET6 are wrong.

Quote:

---

bluestang,i dont think many people here are using ET6 for thier OC's.but just post the screenshots of ET6 to help others with thier OC's(to see the settings)most do it through bios.

---

I'm using ET6 for sometime that I won't restart because ....lazy, but I don't get any precision stable from this.
Anyone have tested F7b ,I testing over 8 Hrs Orthos Blend around 520x8.5 still get freezingafter 8 Hrs. :O

:usa: 3rd WR for my Q9650 :usa:

and still have antifreeze to go.....

comming to get you toooooooo :surf: with the igloo

Quote:

---

Originally Posted by A Random User

For me, All the references in ET6 are wrong or always show the same defaults. Why is this?

---

That is ONLY because ET Shows the .xx % of Vtt of what you set in the BIOS. The Default Value of MCH Ref is .63% of Vtt at stock of 1.20V, which is .756 (.76) . The reflected value in the BIOS and Easytune MCH Ref % is also always x Stock Vtt, so don't let what you see as you change Vtt back to what you want to use throw you off.

Why is this important? I feel that the default of .76 is to much, especially for a overclocked system when trying to gain stability. I believe between .68-.72 is often best. Of course more or less may be needed depending on your board, your ram, your overall speeds, and other voltage settings.

The Ref Settings in the BIOS are .xx % values of/X Stock Vtt so this tends to throw off many users when they set something and then compare to EasyTune. So you need to keep the % amounts in mind when changing these Ref voltages, and it is easiest to do it at stock Vtt (unless you need a % Value Stock Vtt will not allow you to choose, if so adjust accordingly) and then raise your Vtt back up to where you want to run it. If you Make any deviation from the stock % for MCH Ref of .63% the value will be reflected in ET

EasyTune ________ Actual % Of Stock Vtt
.76 _____________________ .63
.75 _____________________
.745 ____________________ .621
.73 _____________________ .61
.72 _____________________
.715 ____________________ .5977
.70 _____________________ .585
.69 _____________________
.685 ____________________ .575

Here is Five Common examples of this, all using MCH Ref, and various Vtt (Termination) voltages with images showing how each % is possible. All of these but the last WILL Change what you see for MCH Ref in EasyTune as well. This way I hope you can see how this works, and then maybe better find your way to tuning your Ref voltages

*** Examples below are percentages ranging between 57.5% - 63% (.685V - .76V) with Vtt always at 1.28V ***


Those ranges .685-.76 are actual values of 57.5%-63% of stock Vtt, varying off from the .76 (63%) stock setting. Some Percentage values will be rounded off for simplicity.


(MCH Ref .685% AKA .685 in ET **57.5% Actual**)

http://i2.photobucket.com/albums/y4/...ge-685-web.jpg

This example shows if you set 1.20 Vtt and then set your MCH Ref to .685 and then raise Vtt back to 1.28, ET would show .685 MCH Ref as .7350V would be .685% of Vtt (1.28 x .5745 = .735) ~ Stock Vtt 1.20 x .5745 = 6894% of stock Vtt (Thus .685%)


(MCH Ref .70% AKA .70 in ET **58.5% Actual**)

http://i2.photobucket.com/albums/y4/...age-70-Web.jpg

This example shows if you set 1.20 Vtt and then set your MCH Ref to .70 and then raise Vtt back to 1.28, ET would show .70 MCH Ref as .75008V would be .70% of Vtt (1.28 x .586 = .75008) ~ Stock Vtt 1.20 x .586 = .7032% (Thus .70%)

(MCH Ref .715% AKA .715 in ET **59.5%-60% Actual**)

http://i2.photobucket.com/albums/y4/...ge-715-Web.png

This example shows if you set 1.20 Vtt and then set your MCH Ref to .715 and then raise Vtt back to 1.28, ET would show .715 MCH Ref as .765V would be .715% of Vtt (1.28 x .5977 = .7650) ~ Stock Vtt 1.20 x .5997 = .7172% of stock Vtt (Thus .715%)

(MCH Ref .73% AKA .73 in ET **61% Actual**)

http://i2.photobucket.com/albums/y4/...age-73-Web.jpg

This example shows if you set 1.20 Vtt and then set your MCH Ref to .73 and then raise Vtt back to 1.28, ET would show .73 MCH Ref as .780V would be .73% of Vtt (1.28 x .61 = .7808) ~ Stock Vtt 1.20 x .61 = .732% of stock Vtt (Thus .73%)

(MCH Ref .745% AKA .745 in ET **62% Actual**)

http://i2.photobucket.com/albums/y4/...ge-745-web.jpg

This example shows if you set 1.20 Vtt and then set your MCH Ref to .xx and then raise Vtt back to 1.28, ET would show .745 MCH Ref as .7948V would be .745% of Vtt (1.28 x .621 = .79488) ~ Stock Vtt 1.20 x .621 = .745% of stock Vtt (Thus .745%)


*** STOCK MCH Ref values at .63% (.76V) To show how ET seems to often or always show .76 and confuse users ***


First Example shows stock values for Ref used, .63%. That would be MCH Ref manually set but Value unchanged (.76) and then Vtt Raised to 1.28.

(Stock MCH Ref W/ 1.28 Vtt / .76 in ET **63% Actual**)

http://i2.photobucket.com/albums/y4/...age-76-web.jpg

This example shows if you set 1.20 Vtt and then manually set your MCH Ref to .756 and then raise Vtt to 1.28, ET would show .76 MCH Ref as .810V would be .76% of Vtt (1.28 x .633 = .81024) ~ Stock Vtt 1.20 x .63 = .756% of stock Vtt (Thus .63%)

This following example shows Stock Vtt and Stock MCH Ref used.........

(Stock MCH Ref W/1.20 Vtt or .76 in ET **63% Actual**)

http://i2.photobucket.com/albums/y4/...-stock-web.jpg

This example shows if you set 1.20 Vtt and then manually set your MCH Ref to .756, ET would show .76 MCH Ref as .756V would be .76% of Vtt (1.20 x .63 = .756) ~ Stock Vtt 1.20 x .63 = .756% of stock Vtt (Thus .63%)


That is just ONE example, and how to manipulate it, of the Many Ref Voltages in the BIOS Vs. what you see in Easytune. Here are all the values affected by other Values in the BIOS and their respective default percentages.

CPU Termination (Vtt) Automatically changes the following if manually set >>>

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

DRAM Voltage Automatically changes the following if manually set >>>

MCH/DRAM Reference Voltage (.50% of Default Dram Voltage)
DRAM Termination Voltage (.50% of Default Dram Voltage)
Channel A Reference Voltage (.50% of Default Dram Voltage)
Channel B Reference Voltage (.50% of Default Dram Voltage)

If you want a higher or lower than stock % / Value for any of the above settings you will find it easier to set the Dram Voltage or Vtt back to stock (Or above or below to find and be able to choose alternate % Values), then adjust desired setting to the % / Value you wish to use.

Then once you have selected a % range you want to use for said setting then go back and raise your Vtt or Dram Voltage back to what you choose to use and the corresponding settings will self adjust and still be set to the .xx % amount that you set them to.

Thanks that clears up some questions :).

So for my 65nm quad, the CPU reference should be .67 or 67% and the MCH should be the same?

Thats what I was told a while ago - just checking.

I am not sure if CPU Ref is set by the board or the CPU, but I think it is the board.

Or did you mean what value you should use as a starting point, either way I am not sure for either what you "Should" use.

As for what you should use Vs. What works for you, I think what works for you is what you really should try to get going. All boards act differently even with the same hardware in them, so what works for one user may not work at all for another user. But, sorry I am not sure what you should use as a starting point for either other then going from stock and adjusting from there.

Some find MCH .68-.73% best, others less/more, all up to your setup and board.

You can check what your defaults are by setting things all to stock and then looking in EasyTune.

As for CPU Ref, Some boards have both (CPU Ref 1+2), and some do not. So as you see I posted here boards without would have one value locked at .67% >>>
http://www.overclock.net/intel-mothe...ml#post5235173

What i meant is:

My VTT is 1.3v and MCH is 1.3v.

Therefore I set a 0.863 reference.

0.863/1.3 = 0.6638 and so on. Which rounds to 0.67 or 67%.

So is that right.

.871 would be .67 or 67% of 1.3 Vtt

So you should set Vtt back to 1.20 then adjust whichever ref you meant to .67% (.87) and then raise the Vtt back up to 1.3 and it will be the correct value. That of course is if you cannot already set .871

If you cannot get .871 exact and you want it, you will need to adjust Vtt up or down until you can select that amount on the ref you wish to set to .67

I can't set 0.871 and 0.863 is the closest and it works.

I just wanted to check that aiming for 67% is the right thing to do.

Quote:

---

Originally Posted by a573573

That is ONLY because ET Shows the .xx % of Vtt of what you set in the BIOS. The Default Value of MCH Ref is .63% of Vtt at stock of 1.20V, which is .756 (.76)

The Ref Settings in the BIOS are .xx % values of/X Vtt so this tends to throw off many users when they set something and then compare to EasyTune. So you need to keep the % amounts in mind when changing these Ref voltages, and it is easiest to do it at stock Vtt and then raise your Vtt back up to where you want to run it. If you Make any deviation from the stock % for MCH Ref of .63% the value will be reflected in ET

Here is Four Common examples of this, all using MCH Ref, and 1.30 Vtt (Termination). All of these but the last WILL Change what you see for MCH Ref in EasyTune as well. This way I hope you can see how this works, and then maybe better find your way to tuning your Ref voltages

*** Examples Below using 1.3 Vtt ***

(MCH Ref .68% AKA .68 in ET)
For example if you set 1.3 Vtt and .884 MCH Ref, ET would show .68 MCH Ref as .884 would be .68% of Vtt.

(MCH Ref .70% AKA .70 in ET)
Another example if you set 1.3 Vtt and .91 MCH Ref, ET would show .70 MCH Ref as .91 would be .70% of Vtt

(MCH Ref .72% AKA .72 in ET)
Another example if you set 1.3 Vtt and .936 MCH Ref, ET would show .72 MCH Ref as .936 would be .72% of Vtt

STOCK MCH Ref VALUES at .63% (To Help show how ET Seems to always show .76 for users)

First Example shows stock values for Ref used, .63%. That would be MCH Ref manually set but Value unchanged (.76) and then Vtt Raised to 1.3, or manually set to .819 and Vtt Manually set to 1.3..........

(Stock MCH Ref W/ 1.3 Vtt / .76 in ET)
If you set 1.3 Vtt and .819 MCH Ref ET would show .76 MCH Ref as .819 would be .63% of Vtt

This Example shows Stock Vtt and Stock MCH Ref used.........

(Stock MCH Ref W/1.20 Vtt or .76 in ET)
If you set 1.2 Vtt and .756 MCH Ref ET would show .76 MCH Ref as .756 would be .63% of Vtt.


That is just ONE example, and how to manipulate it, of the Many Ref Voltages in the BIOS Vs. what you see in Easytune.

Here are all the values affected by other Values in the BIOS and their respective Percentages.

CPU Termination (Vtt) Automatically changes the following if manually set >>>

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

DRAM Voltage Automatically changes the following if manually set >>>

MCH/DRAM Reference Voltage (.50% of Default Dram Voltage)
DRAM Termination Voltage (.50% of Default Dram Voltage)
Channel A Reference Voltage (.50% of Default Dram Voltage)
Channel B Reference Voltage (.50% of Default Dram Voltage)

If you want a higher or lower than stock % / Value for any of the above settings you will find it easier to set the Dram Voltage or Vtt back to stock (Or above or below to find and be able to choose alternate % Values), then adjust desired setting to the % / Value you wish to use.

Then once you have selected a % range you want to use for said setting then go back and raise your Vtt or Dram Voltage back to what you choose to use and the corresponding settings will self adjust and still be set to the .xx % amount that you set them to.

---

there were some misunderstanding about voltage values in ET6 when these boards first released and that were reviewed by users on the net and then stated that ET6 software had some kind of a bug and some of voltage values were wrong or something.
it's about time someone take the time to write and explain about the BIOS vs. ET6 voltage values and all that with an easy to understand english.
i can now use the post as a ref instead of keep repeating myself on these voltage setting stuff and never sure that any readers would understand.

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

Here r my new low volt settings for 520Mhz fsb.
I'll try more when my new reaper will arive.
Vcore has been adjusted in a 2nd test to 1,3625 with LLC
http://www.abload.de/thumb/f6atestingdqg4.jpg

Quote:

---

Originally Posted by fatguy1992

I can't set 0.871 and 0.863 is the closest and it works.

I just wanted to check that aiming for 67% is the right thing to do.

---

You can set .871 if you want, you will just have to raise/lower Vtt until you find that as a option, it will be there. I Will go right now into my BIOS and find the exact setting amount for you and post back

But ya if .863 works then it may be best for your board, that is about .664 (.8632), But you can set .67 if you want for sure, you just have to adjust until you find it.

I will go check just incase that turns out to be unstable for you

Yeah, that would be good thanks.

Here is your choices around that .67% area for MCH Ref, with of course exact .67% (.871) >>>

Set Vtt at 1.40 then choose .871 and then adjust Vtt back to where you want it and you will be using (.871/.67% of Vtt)

Variances around .67%

Or Set Vtt at 1.28 and choose .870 and then adjust Vtt back to where you want it and you will be using (.87009/.6693%)

Or Set Vtt at 1.26 and choose .873 and then adjust Vtt back to where you want it and you will be using (.87308/.6716%)

Or Set Vtt at 1.24 and choose .875 and then adjust Vtt back to where you want it and you will be using (.87503/.6731%)

Thanks i'll give it a go when I have restart the computer :).