Asus M3A79-T Deluxe

[annton]

I am stilling waiting for retailed 940BE here in Hong Kong. I have the asus 79-T already and I love its beefy PWM section. Which bios version should I got for 940BE? If I have earlier bios version, can the MB boot with 940be?

[Ben_Brown]

Also if you need vcore higher than 1.5 you can adjust it in AOD by setting the bios vcore higher than 1.5. Then AOD will typically show 1.4x. Then you can adjust from there and use cpu-z to see the actual vcore. That is what I do anyway.

[MadDias]

I am stilling waiting for retailed 940BE here in Hong Kong. I have the asus 79-T already and I love its beefy PWM section. Which bios version should I got for 940BE? If I have earlier bios version, can the MB boot with 940be?

it can boot with the 940 and an earlier bios. i tried it with the 0403 but it was no fun. 0602 works best for me.

[Daveburt714]

Also if you need vcore higher than 1.5 you can adjust it in AOD by setting the bios vcore higher than 1.5. Then AOD will typically show 1.4x. Then you can adjust from there and use cpu-z to see the actual vcore. That is what I do anyway.

Thanks for the tips Ben!

Seems like I've reached a point of deminishing returns on the voltage though. Anything over 1.5vcore doesn't seem to offer very much (~3.7).

What's wierd is the other night I had it running Prime for almost an hour at ~3.9 (I was a buzzed ) on a cheapo Biostar board which has the CPU/IMC Vids locked together with an offset for the CPU. The board eventually shut down (with no damage), I'm pretty sure the PWM section overheated. I was sober enough to take a SS and the only real difference I see is that I had the CPU/IMC @ 1.4v.. With a +.125 offset for the CPU..

Does anyone know what a safe vid is for the IMC on PhII?
For that matter does anyone know what AMD's stock vid is for the IMC?
If I leave it on auto in bios it boots around 1.125 which seems kinda low...

[pershoot]

Thanks for the tips Ben!

Seems like I've reached a point of deminishing returns on the voltage though. Anything over 1.5vcore doesn't seem to offer very much (~3.7).

What's wierd is the other night I had it running Prime for almost an hour at ~3.9 (I was a buzzed ) on a cheapo Biostar board which has the CPU/IMC Vids locked together with an offset for the CPU. The board eventually shut down (with no damage), I'm pretty sure the PWM section overheated. I was sober enough to take a SS and the only real difference I see is that I had the CPU/IMC @ 1.4v.. With a +.125 offset for the CPU..

Does anyone know what a safe vid is for the IMC on PhII?
For that matter does anyone know what AMD's stock vid is for the IMC?
If I leave it on auto in bios it boots around 1.125 which seems kinda low...

stock (optimised defaults) vid set on dfi lp dk 790fxb-m2rs/h for PII 940 is 1E (1.1750) for NB (1.8GHZ) and 1.31v (Auto) for CPU.

[Titan7171]

ya i think all the boards can do that (if htt goes that high) but i meant at the 1066 divider

ya either or.......I had no problem running them at 1066 either. 4 sticks with no problems......I ran 2x2gb and 2x1gb for 6gb all 4 dimms with no problem. 2 sticks were ddr800 and the other 2 were 1066 and all 4 ran fine.

[Daveburt714]

stock (optimised defaults) vid set on dfi lp dk 790fxb-m2rs/h for PII 940 is 1E (1.1750) for NB (1.8GHZ) and 1.31v (Auto) for CPU.

Thanks man, sounds like it defaults to about the same on your board. I'll try bringing the IMCv's up a little more (1.375 max) and see if it helps my OC any..

I'm actually a pretty wimpy overclocker. If I get to a point where more V's only offer a few more Hz I quit with the volts...

[pershoot]

Thanks man, sounds like it defaults to about the same on your board. I'll try bringing the IMCv's up a little more (1.375 max) and see if it helps my OC any..

I'm actually a pretty wimpy overclocker. If I get to a point where more V's only offer a few more Hz I quit with the volts...

in one test case when i was bringing the NB volts up to ~1.28v to try to get 2600MHZ, things started acting wierd. occt would only see 3 cores when first launching, and things were unstable (even when i brought the voltage/speed back down). i needed to do a full clear (used killcmos and then reflashed) to get it back. not sure if it was related to me bringing the volts close to 1.3 or it was the attempt at 2.6ghz that messed it up. i may try again in the near future to see if it was the volts or the speed, but just wanted to throw that out there...

[cbjaust]

Anyone here has a TRUE mounted? If so, can you post a picture of how it looks?

From what I understand it covers the first memory slot AND must be mounted facing up or down.. Still interested though as the local computershop has one in stock..

I have this picture of the TRUE on my DFI 790FXB:


click for larger image (2048x1536)
The edge of the TRUE line up with the outer edge of the second DIMM slot aand if the gap between the socket and the first DIMM slot is too small the you won't even get a normal size module in there.

I switched over to the SI-128SE and I'm using it with my Abit Fatal1ty AN9 32X at the moment and it just allows my G.Skill PI modules under its supporting bracket:


click for larger image (2048x1536)

Cheers

[Darxide]

Is anyone running a water block on this board?
This is my first water cooled system, so I'm not 100% up on it.

The manual for my water system says if the mobo has threaded holes on the back of the cpu bracket, then I should use that to attach the water block, if not, I should remove it, and use the supplied metal 'H' clip.

Which would be better?

Thanks.

[iocedmyself]

[QUOTE=MadDias;3568397]it´s not trial and error here.. even unplugging the psu and waiting a few seconds doesn´t change it. what do u mean with "voltage jacked up high"? i mean acc is of no use if i have to use stock volts to enable it.
what is an extra 450mhz? 3450mhz? or 3600mhz+450mhz?

A few seconds doesn't cut it, you have to turn it off long enough for the power LED on the board to actually go out. What i mean by "having the voltage jacked up" is doing something like booting at stock clock with over 1.55v. Actually a reliable source has told me that anything over 1.475 is going to be more likely to cause instability if clock is below 4ghz, 4.1ghz - 4.2ghz require between 1.525 and 1.55 AT THE MOST for complete stabilitly, but also requires a mid to high end heatsink.

Phenom II's are optimized for overclocking, so they don't REQUIRE that ACC is enabled to clock high. This is why all the PII chips and AM2+ motherboards have TDP ratings of 125-140w with stock voltage at 1.35 when the chip consumes closer to 60w. Most have no problem running stock speed at 1.2v, and can hit 3.5ghz - 3.7ghz without having to raise cpu voltage. It was really quite genuis to overshoot the TDP, they gave Intel the impression that they hadn't accomplished much in the way of improvements to either IPC or power consumption, while also requiring motherboard manufacturers to produce low price main stream boards that had would allow even people who never thought of overclocking to do nothing more then increase the multiplier without great potential for frying thier motherboard. A 4ghz clocked PII consumes between 100w and 115wl at 1.45v.

The main benifit i've seen for ACC is allowing for easy undervolting at stock speeds, and squeezing out higher clocks past 3.9ghz - 4.1. Could hit 4.1 without ACC at 1.4375 or so, but nothing beyond. After using downcore feature to run through each core individually with all 13 ACC settings and bumping voltage up in .0125 incriments, i was able to boot just shy of 4.6ghz at 1.5475, the weak link being the PWM's in 790GX board overheating, chip staying under 50c with a duOorb in 24c ambient.

Does anyone else have AOD crash their system (just opening it) when CPU core is set higher than 1.45v's in bios?

Guess I'll look for that AOD.ini mod to allow 1.55v's in AOD even though it killed my MSI DKA790GX...

I'm pretty sure this Asus has a much beefier PWM section than the MSI did..

I've had that issue only when AOD settings had reverted to novice mode, or preferances were set to load last settings logged when AOD starts after crash...or some such.

1.55 shouldn't be an issue so long as your case has good airflow, have run 1.7 on Asus 790GX when trying to push past 5ghz with no problem. Though i will say for anyone using a GX board,

DISABLE THE IGP IN THE BIOS

it causes serious instability when voltage's and NB/HT speeds are increased just in how everything communicates, but also makes for looootsss more heat.

I'm at 3.75ghz at 1.55 volts. Idle is much lower then the last time I tried this with multiplier.
42C last time was like 50C...

That is hot.

These chips run very very cool. Which heatsink are you using again? I'll take the odds on a heatpipe cooler of some sort. Heatpipe's are great, and can really give some serious cooling...

however

heatpipes work by evaporating liquid that travels UP the HP, being cooled by the fins until it returns to it's original state and starts the process over again.

Great idea, very effective...unless you have a tower case....meaning the heatpipes will be horizontal to the cpu surface preventing that liquid from coming in contact with the cpu....because heat, and things like evaporating liquid vapors travel vertically....not to the right. I'm sure many people realize this, and think it to obvious to bother mentioning...which makes me think it the possible cause of all these toasty Denebs.

[demonkevy666]

That is hot.

These chips run very very cool. Which heatsink are you using again? I'll take the odds on a heatpipe cooler of some sort. Heatpipe's are great, and can really give some serious cooling...

however

heatpipes work by evaporating liquid that travels UP the HP, being cooled by the fins until it returns to it's original state and starts the process over again.

Great idea, very effective...unless you have a tower case....meaning the heatpipes will be horizontal to the cpu surface preventing that liquid from coming in contact with the cpu....because heat, and things like evaporating liquid vapors travel vertically....not to the right. I'm sure many people realize this, and think it to obvious to bother mentioning...which makes me think it the possible cause of all these toasty Denebs.

No wasn't been a problem for me it worked well on my 9850. I've got a volcano one in 64 bit.( it's hit 78C)
My heat sink isn't getting very warm at all. example the I've had 9850 at 60-70C that got the heat sink up to 41C, I've yet to see this thing go past 33C on my heat sink temperature probes.
Idle in bios was reading 40-43C at the same settings.

I know it's mounted good it's sunbeam CCF, with ultra kaze 3,000 on it

[MadDias]

A few seconds doesn't cut it, you have to turn it off long enough for the power LED on the board to actually go out. What i mean by "having the voltage jacked up" is doing something like booting at stock clock with over 1.55v. Actually a reliable source has told me that anything over 1.475 is going to be more likely to cause instability if clock is below 4ghz, 4.1ghz - 4.2ghz require between 1.525 and 1.55 AT THE MOST for complete stabilitly, but also requires a mid to high end heatsink.

Phenom II's are optimized for overclocking, so they don't REQUIRE that ACC is enabled to clock high. This is why all the PII chips and AM2+ motherboards have TDP ratings of 125-140w with stock voltage at 1.35 when the chip consumes closer to 60w. Most have no problem running stock speed at 1.2v, and can hit 3.5ghz - 3.7ghz without having to raise cpu voltage.

i´m an electrician.. i know how long it can take condensators to unload
acutally, a very reliable source (called me,myself and i), has experienced stability issues when not using 1.4875v (1.52v in cpu-z) at a clock of 3.7ghz.
i´m on water, so i´d consider my heatsink kinda "highend".
i know that there are better steppings out there that reach 3.7ghz on stock voltage. but that doesn´t help the fact that I CAN`T USE ACC. even if it´s not necessary, it´s a feature of my mainboard, so i would like to use it.

[gOtVoltage]

i´m an electrician.. i know how long it can take condensators to unload
acutally, a very reliable source (called me,myself and i), has experienced stability issues when not using 1.4875v (1.52v in cpu-z) at a clock of 3.7ghz.
i´m on water, so i´d consider my heatsink kinda "highend".
i know that there are better steppings out there that reach 3.7ghz on stock voltage. but that doesn´t help the fact that I CAN`T USE ACC. even if it´s not necessary, it´s a feature of my mainboard, so i would like to use it.

602 Bios works well with ACC.. ive been pushing 1.74v for CPU and 1.68 for NB with Stock Heatpipe on Mobo.. My 9950(first revision 140watt) is also watercooled. @ 3.55 24/7 and 3.6ghz max clock ghz..Waiting for 940 price drop then ill really put some clocks out with water.


with ACC you need to adjust slow . The Nb likes volts for Higher clocks even if you dont raise the NB high. For high HTT raise the the Ht Core volts to say 1.32 for the PCI-e. helps with ram and 1066.

Ive been gone a while and see things are moving fast with 940 already.
should be back home this weekend then i can read all the new post.

As for volts and ACC find the Cpu's Max first with out ACC and then raise ACC +2 and slightly lower the volts for CPU. if it works then try +4 and so on. But by all means make shure your Pc is up to date with Bios and that your Os is updated as well.

Get craking on that thing

[Halk]

Is anyone running a water block on this board?
This is my first water cooled system, so I'm not 100% up on it.

The manual for my water system says if the mobo has threaded holes on the back of the cpu bracket, then I should use that to attach the water block, if not, I should remove it, and use the supplied metal 'H' clip.

Which would be better?

Thanks.

Bolted is better. Be careful not to bend the board.

[MadDias]

602 Bios works well with ACC.. ive been pushing 1.74v for CPU and 1.68 for NB with Stock Heatpipe on Mobo.. My 9950(first revision 140watt) is also watercooled. @ 3.55 24/7 and 3.6ghz max clock ghz..Waiting for 940 price drop then ill really put some clocks out with water.


with ACC you need to adjust slow . The Nb likes volts for Higher clocks even if you dont raise the NB high. For high HTT raise the the Ht Core volts to say 1.32 for the PCI-e. helps with ram and 1066.

Ive been gone a while and see things are moving fast with 940 already.
should be back home this weekend then i can read all the new post.

As for volts and ACC find the Cpu's Max first with out ACC and then raise ACC +2 and slightly lower the volts for CPU. if it works then try +4 and so on. But by all means make shure your Pc is up to date with Bios and that your Os is updated as well.

Get craking on that thing

erm... i know that acc works with my 9950...
wait till u put in ur 940.. surprise surprise
no post when acc is enabled.

[evilSuRGe]

i´m an electrician.. i know how long it can take condensators to unload
acutally, a very reliable source (called me,myself and i), has experienced stability issues when not using 1.4875v (1.52v in cpu-z) at a clock of 3.7ghz.
i´m on water, so i´d consider my heatsink kinda "highend".
i know that there are better steppings out there that reach 3.7ghz on stock voltage. but that doesn´t help the fact that I CAN`T USE ACC. even if it´s not necessary, it´s a feature of my mainboard, so i would like to use it.

as much as you want to you will never use the boards ACC with Phenom II x4 940
Here's a quote from a review that explains it.

http://www.firingsquad.com/hardware/...ance/page2.asp

"AMD took the lessons learned through developing ACC with 65-nm Phenom and baked them into their 45-nm Phenom II silicon. As a result, ACC no longer provides the OC’ing benefits it did previously with 65-nm Phenom parts. In the words of AMD: “you can just as well leave ACC off for Phenom II OC testing. Since, the "go-fast" things we learned from ACC (and those CPU parameter adjustments) were factored into 45nm, the benefit unlocked previously by ACC in 65nm silicon is already being realized without having to use the ACC feature separately.” Over the Christmas holiday (before hearing this from AMD) we’d already attempted OC’ing our Phenom II CPU and sure enough, ACC provided no benefit when OC’ing the processor. We actually thought something was wrong with our 790GX motherboard until we heard back from AMD."

[charged3800z24]

602 Bios works well with ACC.. ive been pushing 1.74v for CPU and 1.68 for NB with Stock Heatpipe on Mobo.. My 9950(first revision 140watt) is also watercooled. @ 3.55 24/7 and 3.6ghz max clock ghz..Waiting for 940 price drop then ill really put some clocks out with water.


with ACC you need to adjust slow . The Nb likes volts for Higher clocks even if you dont raise the NB high. For high HTT raise the the Ht Core volts to say 1.32 for the PCI-e. helps with ram and 1066.

Ive been gone a while and see things are moving fast with 940 already.
should be back home this weekend then i can read all the new post.

As for volts and ACC find the Cpu's Max first with out ACC and then raise ACC +2 and slightly lower the volts for CPU. if it works then try +4 and so on. But by all means make shure your Pc is up to date with Bios and that your Os is updated as well.

Get craking on that thing

hey..where you been?

I have ACC off right now. I am nervous with this board since it died a on me the first 2mins I had it running Phenom II. Right now only 2.8ghz on this thing. Here is a screen shot.

[charged3800z24]

erm... i know that acc works with my 9950...
wait till u put in ur 940.. surprise surprise
no post when acc is enabled.

Not entirely true, I actually booted up with ACC 4% all four on my first time with Phenom II 940. Aftr in windows I tweaked further with AOD, then went to open CPU-z and dead. So "technically it booted LOL...but it did not last. I don't know what killed it and am not using ACC on the replacement board.

[MadDias]

Not entirely true, I actually booted up with ACC 4% all four on my first time with Phenom II 940. Aftr in windows I tweaked further with AOD, then went to open CPU-z and dead. So "technically it booted LOL...but it did not last. I don't know what killed it and am not using ACC on the replacement board.

i couldn´t even post when i put in my phenomII. i had to clear cmos even though i set everything to default before i switched cpus.
i´m very tempted to spend another 250€ on a 940BE. Not being able to boot at 4ghz is driving me crazy...
i think i got a very strange cpu. 3.6ghz with 200x18 isn´t stable (2hrs16mins till core2 crapped out in prime). 3.7ghz 232x16 is 3hrs prime stable but at a voltage others use to get into windows at 4ghz... i just don´t get it...

[charged3800z24]

i couldn´t even post when i put in my phenomII. i had to clear cmos even though i set everything to default before i switched cpus.
i´m very tempted to spend another 250€ on a 940BE. Not being able to boot at 4ghz is driving me crazy...
i think i got a very strange cpu. 3.6ghz with 200x18 isn´t stable (2hrs16mins till core2 crapped out in prime). 3.7ghz 232x16 is 3hrs prime stable but at a voltage others use to get into windows at 4ghz... i just don´t get it...

I can boot at 4.0ghz, but need 1.5v to do so. I need more to keep it running. If I lower NB it does much better. I might end up using the Gigabyte for this chip. It seems to like the Phenom II better. May be Asus will bring out a better bios that might change my mind.

[gOtVoltage]

hey..where you been?

I have ACC off right now. I am nervous with this board since it died a on me the first 2mins I had it running Phenom II. Right now only 2.8ghz on this thing. Here is a screen shot.

I feel left out not having a 940 yet...ACC is factored in on 940's.. Its not that much of a biggy any way.. Always check the temps and make shure the NB and Nbchipset has ample volts to keep up with the CPU. 940 will use lots less compared to our old B3's The voltage game still apply's to 920/940 AMD for High uber NB and CPU clocks above 4.0ghz.

Wow,, Crazy , i just realized (4.0ghz and AMD) in the same sentence has me scared, Now you know why i was hiding J/K

i couldn´t even post when i put in my phenomII. i had to clear cmos even though i set everything to default before i switched cpus.
i´m very tempted to spend another 250€ on a 940BE. Not being able to boot at 4ghz is driving me crazy...
i think i got a very strange cpu. 3.6ghz with 200x18 isn´t stable (2hrs16mins till core2 crapped out in prime). 3.7ghz 232x16 is 3hrs prime stable but at a voltage others use to get into windows at 4ghz... i just don´t get it...

First,,
Try to use the Highest CPU multi you can while using Stock NB/HT ..
OverClock while Only Raising the CPUvcore while using your max ram divider(800 or 1066) which ever ram you have.


What do you get?



Next ,,
Now try Adding some Volts to the NB on CPU and then raising then checking stability if by raising the NBvolts stabilizes things then clock some more.(920/940 use 1.35- 1.4v for NB to start) yes its safe to do . The 940 IMC is just like b3,, Actually its alot Better and uses less Volts for both CPU and NB.
This is a easy way to see if the Ram or IMC may be holding you back . By Raisng the NB volts it helps the IMC when the CPU goes up in clocks .In therory if your on the Edge of the CPU max this should make it stable. Most cases it does. Also Check the Temp of the CPU , this will hold you back too.


Note:
You should be able to Clock a little higher with a little More NBvolts compared to the First step (Raising CPUxmulti/htt while stock HT and NB is used)

As you do this balance act youll find that most of the time the NB likes a little voltage to keep things stable . Especiallywhen the CPU is going to the Moon. I always push the CPU first then Add NB volts to get more . Finally raising other things such as VDD and PCI0E Core Volts which is also Nbchipset on Mobo(1.32v)

Lots of people forget that the NB needs some extra volts too to keep IMC stable ..Just giving Vcore to CPU will not keep stuff stable ,Especially if going for that 4.0ghz and High NBmhz..

Also my old 9950 did not like high multi;s 17x was max,,but it loves High HTT for 3.55ghz/3.6ghz with 2600NB. I would treat 940 no different except for the HT which is actually Lower(3600 instead of 4000)

Is your HT too high above 3600 ?
This can give stabilty problems. If your going to be using insane High NB (2800mhz+) keep the HT close to stock for stability untill you know what is keeping you from getting more.

I wont have a 940BE for a little while yet , so i cant Post 940 results.

But i can tweak the crap outa this Asus 79-T and i am waiting for a optimal bios to go above htt300 with me 9950.

As long as you have good cooling or your temps arnt a factor push that thing.

1.5volts on the CPU is like a snack for these things

If anything you probally need more NBvolts / lower HT to 3600 / and set Core PCI-E to 1.32v.

hope something helps.

P.S if the NB is going above 2600mhz you will need to raise the NBcpuvolts for it Especially if you are going for 4.0ghz.

gOtVolTage

[charged3800z24]

I feel left out not having a 940 yet...ACC is factored in on 940's.. Its not that much of a biggy any way.. Always check the temps and make shure the NB and Nbchipset has ample volts to keep up with the CPU. 940 will use lots less compared to our old B3's The voltage game still apply's to 920/940 AMD for High uber NB and CPU clocks above 4.0ghz.

Wow,, Crazy , i just realized (4.0ghz and AMD) in the same sentence has me scared, Now you know why i was hiding J/K

Hey, I kinda know the feeling. I had to go out of town for work and was not able to play with my chip. Watching everyone posting results etc. I was not aloud at first cause of NDA appearently, and then wasn't around to post when NDA lifted. I got my 940 frre from work, so I kinda cheated.

I know, 4.0ghz with almost lil effort is crazy. just beeing able to run 3.8ghz @ 1.4v is crazy. I look forward to you get Phenom II. BTW thanks for the helpful info. Will play a round a lil more.

[MadDias]

First,,
Try to use the Highest CPU multi you can while using Stock NB/HT ..
OverClock while Only Raising the CPUvcore while using your max ram divider(800 or 1066) which ever ram you have.


What do you get?

on stock voltage i don´t get that much.. x16 is the highest stable multi on stock vcore.

i first thought the cpu or mobo doesn´t like high multis. but right now i´m 20mins into prime on 200x18.5/2.6ghzNB with 1.4875v/1.4vNB with my ram on the 1066divider. almost the same settings as in the screenshot in my sig only higher ram and nb speed.
it´s really funny that with phenomII u have to disable all the stuff that increased performance on phenomI.
cpu tweak is the most important. with cpu tweak enabled i can´t even get 3.4ghz stable. cpu prefetch is also disabled, as i don´t really know what it´s doing and it doesn´t help with performance.
both the ht and pcie-core volts are upped to 1.28V
cpu vdd is at 2.8V

4ghz is still a no go. maybe it has something to do with the sb750, as it always craps out when it´s trying to acces the hardisks (raid0 array).
but that´s still a long way to that magic 4. first i got to get 3.8ghz stable which always gives me irql_not_less_or_equal or other ram related bluescreens after a few minutes of prime.

[N19h7m4r3]

Just got my 940 today.

I love it I'm running everything stock bar the HTT is at 2000.

I have ACC off also.

I'll run some test asap.

Running windows 7 64-bit also.