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

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Originally Posted by gurusan

The NH-U12P is great, some chips run hotter than others though, usually lower VID chips will run hot, I had a 1.165V VID chip once that ran hotter than the sun.

I am only using a Scythe Mine 100mm cooler that I picked up used for 10 quid :) Temps are not a problem as you can see, ambient is 20C. Also I don't usually use IBT because it heats the chip up so damned much, it's quite unrealistic IMO. I might do an IBT run later on to get in that 4.5GHz LinX stable club though :)

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I didnt know VID was a factor with heat. I thought all chips would give the same temps at a given Vcore no matter what the VID? So lower VID=better oc but more heat? I had a mates E5200 at 4Ghz in my machine and it never passed 55@full load with the the NH-U12P now that i think of it. Maybe my E8400 is just a scorchio chip! It has a 1.175 VID btw. Agreed IBT does kick things up to a new level but ive had chips run small fft's for 24hrs+ and need a small vcore bump to get 25IBT passes without errors. I am open to the idea that IBT is so unrealistic as to be unneccesary though.

In my experience chips with lower VID run hotter and OC well. Chips with higher VIDs usually run much cooler but are not necessarily bad clockers (my current chip as an example).

1.175V is a good VID, I would keep pushing for 4.4GHz or maybe 4.5GHz :)

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Originally Posted by gurusan

In my experience chips with lower VID run hotter and OC well. Chips with higher VIDs usually run much cooler but are not necessarily bad clockers (my current chip as an example).

1.175V is a good VID, I would keep pushing for 4.4GHz or maybe 4.5GHz :)

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I See! Learning something new here everyday, literally!
I can get small ffts stable at 4.4 with 1.248@CPU-Z (llc disabled) but temps are borderline at 75. 4.5 seems to need two notches of vcore higher (at least) and temps hit 78 so i havent primed that for more than couple of minutes. Have tried AS5 instead of the noctua compound but temps jumped 5c at load so im just gonna stick with 4.25 for now and start reading up on watercooling!!

Well I'm usually fine with low 80s for prime as normal system use the temps won't get quite as high. Watercooling is nice though as you really don't have to worry about temps much at all. I sold my WC setup over the summer and miss it :(

Mine's a 1.2 vid and I've hit 5GHz with it. Easily stable at 4.5 too. WC setup is more than likely to be needed for those kind of speeds though, particularly once you go over 1.35v on air.

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Originally Posted by Songok

I finally got memory stable at DDR3 1333 (stock!). The problem was the ocz mem (or all DDR3 on this board?) doesnt like volts at all. I think hoss posted similiar few pages back. I couldnt get mine stable at rated 1.8v so after much :brick: i lowered to 1.78 then stable at 1.76. Now i can oc it and hopefully get 1600 stable. Also gonna try for 4.5 but think my cooling might limit me as am hitting 74 on IBT.

http://i104.photobucket.com/albums/m...1009-31-06.png
EIST enabled

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I still think you MCH ref might be 1 or 2 steps too low. It would be great if you could get your PL down to 8 or 9.:up: And your right more volts isn't always the answer. On my DDR3 setup more volts made unstable; less made stable, especially with the RAM. I always keep a voltage monitor program open so I can see what under/over volts from BIOS settings.

Its good to see this thread still going. Makes me want to go back to S775 and have some more fun. It would be fun to try on a DDR3 board where you aren't limited to 1.65vDimm.

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Originally Posted by In-Fluence

I see, good to know, thanks for the reply. I see you've got a 'voltage II' tab as well - nice :). The ram refs seem to have minimal effect on stability, although when I ran my reapers over 2.1v, the values did benefit from a notch above 0.5xvdimm, and that got me 1295MHz memtest #5 - 1 hour stable (plus a few passes of full test). As for the skews, on the MIIF, tuning the skews with one stick at a time in its own slot, and pushed to the limit was the best way to do it (and relaxed PL). Both sticks together makes it harder. Some settings will not boot at all, others will give you more stability, much like the CPU/NB skews.

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Theres nothing really in the voltage II tab, it just pops up if you happen to scroll over that area. :up:

Again after a long time abusing the Q9650 it's still rock solid on Prime95 blend.

Key: Low Temps.

EP45-UD3P + Q9650@4500Mhz_1.32vcore + G.Skill ECO DDR3 1600Mhz

Don't mind ram timings they were relaxed the test was just to check CPU stress without ram interference :up:

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Originally Posted by bluestang

I still think you MCH ref might be 1 or 2 steps too low. It would be great if you could get your PL down to 8 or 9.:up: And your right more volts isn't always the answer. On my DDR3 setup more volts made unstable; less made stable, especially with the RAM. I always keep a voltage monitor program open so I can see what under/over volts from BIOS settings.

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I have mch ref set to .71 in Bios, does it always read lower in ET? I got PL stable at 9 overnight, 8 failed but am going to try MCH changes and see if i can get it. Have more xilence 120mm fans on the way, so hopefully thatl sort temps and allow for 4.5 :)

http://i104.photobucket.com/albums/m...1008-55-34.png

I gave up with the Ripjaws PC12800C7 :( Nothing to do with them : 1333 C6 7-7-18 PL7 with 1,68v seems to be the wall for me
The mobo ran the vDimm @1.92v on "auto" lol ain't safe for sure ...but even in C7 it wasn't stable for Prime Blend (My dead UD3 DDR2 rev1.1 I miss you so much !!)

I may be back with the Crucial Value to show some good screenies ;) ...keep this thread alive mates !!

Very nice work on the DDR3 board Jor!

http://img30.imageshack.us/img30/4765/capturect.png

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Originally Posted by Eeky NoX

I gave up with the Ripjaws PC12800C7 :( Nothing to do with them : 1333 C6 7-7-18 PL7 with 1,68v seems to be the wall for me
The mobo ran the vDimm @1.92v on "auto" lol ain't safe for sure ...but even in C7 it wasn't stable for Prime Blend (My dead UD3 DDR2 rev1.1 I miss you so much !!)

I may be back with the Crucial Value to show some good screenies ;) ...keep this thread alive mates !!

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Or try the new G.Skill Eco Series CAS6 1800Mhz.

Hi guys,

I just got my new x3370.

Trying to make to work but i've no chance. Something wrong with my bios settings? Everytime I change the "CPU Host Control" from disable to enable and leave the CPU Host Frequency to 333 (or whatever else), my ep45-ud3 refuse to boot (restart with defaults and claim an overclock issue).

Any Idea how should I set the bios for this x3370?

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Originally Posted by Songok

I have mch ref set to .71 in Bios, does it always read lower in ET? I got PL stable at 9 overnight, 8 failed but am going to try MCH changes and see if i can get it. Have more xilence 120mm fans on the way, so hopefully thatl sort temps and allow for 4.5 :)

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ET shows the value when VTT is at 1.20 in BIOS. So .68v MCH ref when set at 1.20 VTT in BIOS will show .68 in ET. If you raise VTT to 1.24 in BIOS then you MCH will scale automatically with it and show .71 in BIOS and still show .68 in ET. So you need to set MCH ref to .70 or .72 when you VTT is at 1.20 before rasing it back up to 1.24.

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Originally Posted by Jor3lBR

Again after a long time abusing the Q9650 it's still rock solid on Prime95 blend.

Key: Low Temps.

EP45-UD3P + Q9650@4500Mhz_1.32vcore + G.Skill ECO DDR3 1600Mhz

Don't mind ram timings they were relaxed the test was just to check CPU stress without ram interference :up:

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Very nice friend :up: good work there :up:

Cheers
Sergio

Just got a free upgrade to a brand new Q9550 from my old Q9400
and i can see it does 4.0 a lot easier than even my last one on this board..

although i gotta say there appear to be boot issues with this particular UD3R, almost like it doesn't wanna boot unless you set EXACTLY the right settings, took 25 tries once and had to remove the CMOS battery and even then....

Gonna give it's little brother the EP45 UD3L a try this afternoon....either way it's good to have a back up board...
and the 12 mb of cache doesn't hurt either....

http://i432.photobucket.com/albums/q...40LOWERPLL.jpg

Very nice work there jor3lbr, I see you had a nice low temp to work with too :D

Just got my RMA cheque from my dominator GT DDR2 modules at long last, so a set of trident 1200's are on the cards so I can finally acheive my goal of 4.5/ddr1200, and will hopefully be able to aim a higher for some more benching.

One thing I found is that 499x9 seems a load easier to stabilise than 500, and with nearly 0.2vcore less, has anyone else experienced this?

Finally settled on my 24/7 clock....got a nice balance between CPU freq., vcore, and memory performance :)

http://img121.imageshack.us/img121/5474/captureef.png

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Originally Posted by gurusan

Finally settled on my 24/7 clock....got a nice balance between CPU freq., vcore, and memory performance :)

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Good work gurusan :up:
Nice high memory speeds and sweet FSB for 24/7. Those are now my targets too!! :clap:

Ok So i been having problems with my EP45-UD3P freezing up or powering off and even just going to a black screen. It was mainly when i tried to use over 1.30 vcore but now its gotten worse and does it with less things iv tried are below im out of ideas no one iv asked has had much of a idea of what could be causing it. Also on both boards i get a sound coming from around the cpu socket.

Tested
3 CPU's= E6600, Q6600, Q6600
2 rams sets= OCZ FLEX2 pc9200 2x2, some 1x1 pc6400
2 PSU= seasonic 850w, toughpower 680w
2 motherboards=EP45-UD3P p35 bloodiron
3 videocards= asus 5870, evga 8800gt, evga 8800gt

some proof that the UD3L ep45 can pull it's weight like it's bigger brother
haven't tried 500 yet, but all the settings are there - minus some references and fine pll control

4.0 was even easier on this one, now that i got a good one that actually boots

one thing that concerns me though, is the UD3L has bugger-all for pwm/mofset cooling - could get kinda hot

oh well - at least it WORKS now...



http://i432.photobucket.com/albums/q...66/proof-2.jpg

@ Jor and Guru...nice work! :up:

Guys is 1.670 ich i/o to much for everyday use ? i seem to got my pc stable but need ich up to 1.6700 to make it stable and it still makes the sounds coming from around the cpu socket. Pinpointed the sound as my megas making noise from the gas only thing it can be.