**Official** GIGABYTE 333 Onboard Acceleration P55A Series - P55A-UD6/UD4P/UD3

[radaja]

yea i have the same issue with my H55M-UD2H.if i set 8-8-824 cpuz show 9-8-8-24.and when i messed with static tRD setting,from auto to 10 then cpuz showed 5-8-8-24 instead of 8-8-8-24

[OC Nub]

yea i have the same issue with my H55M-UD2H.if i set 8-8-824 cpuz show 9-8-8-24.and when i messed with static tRD setting,from auto to 10 then cpuz showed 5-8-8-24 instead of 8-8-8-24

Maybe adjusting static tRD will help get the correct timings?

[maxxx]

yea i have the same issue with my H55M-UD2H.if i set 8-8-824 cpuz show 9-8-8-24.and when i messed with static tRD setting,from auto to 10 then cpuz showed 5-8-8-24 instead of 8-8-8-24

The P55A-UD7 also shows this behavior. I've sent some data to FELIX so he can investigate CPU-Tweaker.

[radaja]

after i changed it from auto to 10,i tried to set what auto showed and set it to 14 and still kept coming up as 5-8-8-24.i tried 13 ,9,8 then
when i set it back to auto after two boots it went back to reporting cas one too high again(9-8-8-24)i think its just bugged

EDIT-i just set 7-7-7-21 in the bios and cpuz and everest report 8-8-8-24
when i set 7-8-8-24 in the bios cpuz and everest report 8-8-8-24
and it seems to only change my cas to 5 when i set the tRD to 10.
but nothing changes my everest scores?going from cas 9 down to cas 7
its like the memory settings dont do anything.

[ehume]

Maximum BCLK on auto voltage for cpu and dimm. i7 860 on GA-P55A-UD3P.



Maximum clock on auto voltage for cpu and dimm. i7 860 on GA-P55A-UD3P.

[trans am]

okay note for clarksdale. The f6 bios at the top of the list on page 1 is no good. you want the f7 bios for ud6. f6 sets my x16 at x8. I came across this same issue on msi gd65. they gave me a beta bios 1.73 but bclk on that board with clarks maxed at 200 on dice so I sold it and bought the maximus III formula and and a ud6. I just insulated the M3F. now I'm gonna pull the ud6 off (im curretly on it typing this post) insulate it and hopefully by that time I have a decent bios to work with. in the meatime Ill see what I can do on F7 bios.

[pangingIII]

Maybe adjusting static tRD will help get the correct timings?

OC Nub,

try with QPI link x40 and playing with the tRD setting, set tRD value at 12 in bios used to always give me correct memory timings reading in Windows.

http://www.xtremesystems.org/forums/...3&postcount=15

this somehow adjust something (which i dont know), but CPU-tweaker / CPU-z / Everest would show bios-set memory timings.
anyway, as far as i could see there was no system stability problem.

[pangingIII]

My sys_fan1does not vary. It stays at max. My sys_fan2 also does not vary: it stays at some kind of minimum.

Is this normal for P55A boards?

i normally try not to use the fan plugs on motherboards, also disable the CPU smart fan in bios.

so i'm sorry i don't have any info to share with you on that. i can only guess that it could be just bios problem.

[ehume]

i normally try not to use the fan plugs on motherboards, also disable the CPU smart fan in bios.

so i'm sorry i don't have any info to share with you on that. i can only guess that it could be just bios problem.

I wondered about that. But the auto fan controller for the cpu works like a champ. It even flies blind: it will adjust 2-wire fans based on the cpu temps. It's most remarkable to see.

[OC Nub]

OC Nub,

try with QPI link x40 and playing with the tRD setting, set tRD value at 12 in bios used to always give me correct memory timings reading in Windows.

http://www.xtremesystems.org/forums/...3&postcount=15

this somehow adjust something (which i dont know), but CPU-tweaker / CPU-z / Everest would show bios-set memory timings.
anyway, as far as i could see there was no system stability problem.

I will try that, Thanks.


Works like a champ, thanks again.

Are you using the power savings options in bios?



Im working on getting 4600mhz stable now. It failed last night after 14 passes of LinX using max mem.

[OC Nub]

Changed the CPU multi to x25 and upped the bus speed to 184, set timings to 7-8-7-20 and passed 4600 using 2x1gb of HyperX. Will try later with the 2x2gb kit of Dominators. I wonder if it didnt like the 26 multi.

Its nice to not need an expensive WC setup to cool the chip, I'm using a Corsair H50.

[OC Nub]

Think Ive about reached the limit without going over the maximum vcore and vtt.

[radaja]

i just set my QPI link speed to x20 and now instead of reporting cas one highe now it reports it one lower

[OC Nub]

i just set my QPI link speed to x20 and now instead of reporting cas one highe now it reports it one lower

It worked for cas7 but if I set Cas6 it still reads cas7.

Did you set the tRD value to 12?

[radaja]

yep im at 21x200@4200 for testing the QPI link speed,i set 8-8-8-24 w/static tRD set to 12
and cpuz and everest now report 7-8-8-24?if i set QPI back to x36,i get 9-8-8-24?
is it ok to run my QPI at 4000?

[OC Nub]

yep im at 21x200@4200 for testing the QPI link speed,i set 8-8-8-24 w/static tRD set to 12
and cpuz and everest now report 7-8-8-24?if i set QPI back to x36,i get 9-8-8-24?
is it ok to run my QPI at 4000?

I'm not positive, If I'm not mistaken I was using QPI Ratio set to x48 in bios up until today. All my overclocking on the i7-860 and 870 were done using x48 with no issues.

Only reason I switched to x40 was to get the ram timings to read correct in cpuz.

Edit: I went back and looked at some screens and I had it set to x36, sorry.

[radaja]

yea my board goes up to x40.now that i set it back to x36 it still reads my cas one lower?
maybe someday they can solve these strange issues

[OC Nub]

Pushing my luck a little bit, but having fun. Ran some spi1m tonight. Had a better run at 5100mhz but locked up taking the screeny.

I may get a cheap WC setup for this chip, it wont take much to keep it cool. So far the H50 is doing fine.

[Temujin]

Nice! That's some pretty low timings even for the HyperX 2GHz running CAS 7. Probably the CPU's memory controller getting picky at that frequency pushing some QPI V through it for CAS 7 at 2GHz. That's so close to stable though if you got that far.

[OC Nub]

Thanks, I was using 1.50vtt and 1.680vdimm.

After reading about many dead Clarkdale chips I am a little nervous to keep pushing. But this is almost to easy, makes it hard to stop.

[Wompa164]

I recently picked up a Core i5 750 + Gigabyte P55A-UD3 bundle at Fry's for a pretty good price. I don't plan on doing any EXTREME overclocking, but I would like run to a decent 24/7 overclock. Can anyone weigh in and tell me if it would be worth the extra $50 to upgrade to the UD4P, mainly for it's 12-phase power regulation? I have no use for most of the other features offered such as dual LAN, better onboard sound, or SLI compatibility, so I'd really appreciate if someone could weigh in on the OC potential of the UD3 versus the UD4P, and if it is indeed a more robust board outside of the features I mentioned above.

[Temujin]

I recently picked up a Core i5 750 + Gigabyte P55A-UD3 bundle at Fry's for a pretty good price. I don't plan on doing any EXTREME overclocking, but I would like run to a decent 24/7 overclock. Can anyone weigh in and tell me if it would be worth the extra $50 to upgrade to the UD4P, mainly for it's 12-phase power regulation? I have no use for most of the other features offered such as dual LAN, better onboard sound, or SLI compatibility, so I'd really appreciate if someone could weigh in on the OC potential of the UD3 versus the UD4P, and if it is indeed a more robust board outside of the features I mentioned above.

Hi there Wompa. Check out what "ehume" (farther up the page) has been getting with his UD3P. His board is a good choice too, if you don't need the UD4P's extra features. I've had different Core i5 750s on a UD3P and UD3R reaching 4GHz. Auto BIOS settings weren't so forgiving with the UD3, so I had to do a little tweaking.

Otherwise, the big overclocking difference between the UD3 and UD3P/UD3R/UD4P are the Phases. Auto settings favor those three and seem to like every 750 I've used so far.

Hope this helps!

[ehume]

I'm running 4GHz routinely on the P55A-UD3P. Rock stable. Even the voltages are stable, which I attribute to the 12-phase VRM.

I run LinX to test cooling fans with my Megahalems. My sole difficulty is my inexperience with applying TIM properly. But I'll get there.

As Temujin says, choose your board for the features. The 4P/4R and 3P/3R are all quality boards. Check out this review for example.

[stasio]

yea i have the same issue with my H55M-UD2H.if i set 8-8-824 cpuz show 9-8-8-24.and when i messed with static tRD setting,from auto to 10 then cpuz showed 5-8-8-24 instead of 8-8-8-24

Guys,please check this updated version:
CPU-Z 1.53.2

-fix CAS for Clarkdale
-released 15.02.2010
This is internal beta version and without validation.

[radaja]

working great here.thanks stasio for your help with this issue